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Persantine (Dipyridamole)
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Persantine

Generic Persantine is a coumarin anticoagulants. Generic Persantine is indicated as an adjunct to coumarin anticoagulants in the prevention of postoperative thromboembolic complications of cardiac valve replacement. Generic Persantine keeps blood flowing smoothly by preventing blood cells from clumping together (coagulating).

Other names for this medication:

Similar Products:
Argatroban, Plavix, Salagen, Arixtra

 

Also known as:  Dipyridamole.

Description

Generic Persantine is a coumarin anticoagulants.

Generic Persantine is indicated as an adjunct to coumarin anticoagulants in the prevention of postoperative thromboembolic complications of cardiac valve replacement. Generic Persantine keeps blood flowing smoothly by preventing blood cells from clumping together (coagulating).

Persantine is also known as Dipyridamole.

Generic name of Generic Persantine is Dipyridamole.

Brand name of Generic Persantine is Persantine.

Dosage

You can take Generic Persantine with or without food.

The recommended Generic Persantine dose is 75-100 mg four times daily.

Try to take this Generic Persantine at the same time each day.

Do not store in the bathroom.

If you want to achieve most effective results do not stop taking Generic Persantine suddenly.

Overdose

If you overdose Generic Persantine and you don't feel good you should visit your doctor or health care provider immediately. Symptoms of Generic Persantine overdosage: warm feeling, flushes, sweating, restlessness, weakness, dizziness.

Storage

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F) away from moisture and heat. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Persantine are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.

Contraindications

Do not take Generic Persantine if you are allergic to Generic Persantine components.

Be careful with Generic Persantine if you are pregnant, planning to become pregnant, or are breast-feeding.

Be careful with Generic Persantine if you have unstable angina.

Be careful with Generic Persantine if you have had recently sustained myocardial infarction or hypotension.

Be careful with Generic Persantine if you use anticoagulants ("blood thinners"), aspirin, valproic acid.

It can be dangerous to stop Generic Persantine taking suddenly.

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Heart-to-liver activity ratios measured on the anterior SPECT projections were significantly higher for tetrofosmin than for sestamibi in the rest and stress studies. Heart-to-lung ratios were similar for both tracers. Significant linear correlations between tetrofosmin and sestamibi perfusion indices were found in normals and in patients with proven or suspected coronary artery disease. In segments showing abnormal uptake during stress, the perfusion indices were similar for tetrofosmin and sestamibi at rest and during stress. The degree of reversibility in these segments was also similar for both tracers. Finally, the extent, intensity and severity of perfusion defects were similar for both tracer studies.

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In the Group 1 animals, 99mTc activity (y) was related to myocardial blood flow (x) from 0 to 6.1 ml/min/g by the relationship y = 0.83X + 0.18, r = 0.95, p = 0.0001. The scintigraphic ratio of myocardial perfusion defect zone counts-to-normal myocardial zone counts (0.54 +/- 0.05 at 30 min) remained constant over 4 hr, as did technetium counts from direct endocardial sampling. Scintigraphic count ratios allowed discrimination between perfusion defect and normal myocardial regions beginning at 5 min following 99mTc-Q3 injection.

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The results obtained indicate that pelletization can be considered as a method of choice for pilot plant and/or full-scale production of controlled-release dosage forms based on the formation of amorphous solid dispersions.

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As many as 24 patients suffering from essential hypertension (EH) were examined. The patients were subjected to Holter ECG monitoring, echocardiography, coronary angiography, exercise scintigraphy of the myocardium with transesophageal pacing of the atria and the dipyridamole test. The patients manifested defects of thallium accumulation during exercise scintigraphy of the myocardium. They were transitory defects of accumulation with clearance impairment recorded in EH patients with atherosclerosis of the coronary arteries; transitory defects of accumulation without clearance impairment recorded in EH patients with the angiographically unchanged coronary arteries. In Holter ECG monitoring, the patients with a silent depression of the ST segment demonstrated transitory defects of thallium accumulation by the myocardium in all the cases during exercise scintigraphy of the myocardium.

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Because TMCG/DIPY treatment modulates the methylation status/stability of E2F1, the results demonstrate that therapies targeting the epigenetic machinery of cancer cells in the presence of overexpressed E2F1 may result in efficient E2F1-mediated cell death.

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Hyphosphatemia can be seen in renal transplant recipients. Hyperparathyroidism, glucocorticoid treatment, renal denervation and impairment of renal tubular phosphate reabsorption are the most common causes of hyphosphatemia in these patients. It is well-known that dipyridamole enhances renal tubular phosphate reabsorption in some clinical conditions. We did not find any information about the effect of dipyridamole in renal transplant recipients (RTRs) with hypophosphatemia. For this reason, we decided to give dipyridamole 11 RTRs with hypophosphatemia.

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We have previously found that acute intravenous infusion of an ACE inhibitor normalized the reduced coronary vasomotor function in type 2 diabetes. The aim of the present study was to extend this investigation to an angiotensin II receptor blocker (ARB) administered orally in normotensive, asymptomatic type 2 diabetes patients without albuminuria.

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Kinetics for transport of adenosine into guinea-pig neocortex synaptosomes were studied by incubating them with [14C]adenosine for up to 30 s. The apparent Km value of the high-affinity transport system for adenosine was 21.1 microM and the Vmax value was 257.3 pmol/min/mg protein. The transport system was inhibited by both compounds structurally related (compounds 554 and 555) and unrelated (dipyridamole) to adenosine. Because electrically stimulated synaptosomes release up to 1.5% of the adenosine derivative content per min, the physiological significance of adenosine uptake is discussed as a possible mechanism to compensate for the loss of adenine nucleotides from synaptosomal preparations.

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Patients with hypertension frequently complain of chest pain and exhibit ischemic-like ST segment changes on the exercise electrocardiogram (ECG). However, the specificity of such changes for predicting significant CAD is very low, because these patients often exhibit a normal coronary angiogram.

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Antiplatelet agents are effective for secondary prevention after ischemic stroke, although they do not always prevent recurrent events. Laboratory studies confirm that therapy with 3 antiplatelet agents is superior to dual therapy or monotherapy at inhibiting platelet and leucocyte function. We report here a 69-year-old man who had recurrent strokes despite single or dual antiplatelet agents, but who responded to a combination of aspirin, dipyridamole, and clopidogrel. Likewise, triple antiplatelet therapy was effective in a series of 8 additional patients during a period of 28 months of follow up. Because combining 3 agents runs the risk of major bleeding, clinical trials are essential to address issues of safety and efficacy in patients with stroke.

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Experiments with isolated perfused hearts of guinea pigs and rats showed that cardiac action is linked to formation of prostaglandinlike substances (PLS) and prostacyclin (PGI2). Perfusion of the hearts with arachidonic acid or pretreatment with a linoleic-acid-supplemented diet significantly increased the content of PLS and PGI2 and exerted an economic effect on the heart performance. Dipyridamole induced a marked increase in the coronary flow and PGI2 formation of the hearts but decreased the enhanced myocardial PGI2 biosynthesis after perfusion with arachidonic acid. Propranolol also caused a rise in PGI2 efflux but did not show any influence on PGI2 formation after arachidonic acid. Dipyridamole and propranolol prevent decreased PGI2 formation after acetylsalicylic acid, supporting the view that a combination of these drugs exerts a preventive effect in patients with angina pectoris and heart infarction.

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Antiplatelet agents are often included in plasma exchange-based regimens for thrombotic thrombocytopenic purpura (TTP) patients; however, the opportuneness of their use in TTP is still controversial. The italian Cooperative Group for TTP carried out a randomized trial to investigate their actual effectiveness, both in acute TTP and as maintenance treatment.

persantine dosage chart

To estimate the prevalence of inappropriate medications prescribed by office-based physicians for patients 65 years or older.

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Ethylenediaminetetraacetic acid (EDTA) is the anticoagulant recommended for full blood counts, citrate is recommended for coagulation and platelet studies, and citrate-theophylline-adenosine-dipyridamole (CTAD) inhibits platelet activation. Because the combination of EDTA and CTAD (E/C) is better than EDTA or CTAD alone for measuring platelet parameters on the ADVIA 120 Haematology System, we investigated whether it also offers advantages for the flow cytometric assessment of platelet and/or neutrophil activation and platelet-leucocyte aggregate formation ex vivo. Blood from healthy subjects was collected into E/C or citrate, kept at room temperature or at 4 degrees C, and analysed 0 to 360 min later in the ADVIA 120 and by immunofluorescent flow cytometry. Platelet count, mean platelet volume, number of platelet clumps, mean platelet component, numbers of CD62P(+) platelets and platelet-leucocyte aggregates, and expression of CD11b on neutrophils changed little over 360 min in blood with E/C kept at 4 degrees C. In contrast, one or more parameter changed when blood was kept with E/C at ambient temperature or with citrate at either temperature. The use of E/C in in vitro and in vivo studies is illustrated. Platelet and neutrophil activation status ex vivo can be reliably assessed if blood is collected into E/C, held at 4 degrees C, and analysed within 6 h.

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All 3 types of CRVO, showed a significantly greater severity of retinal hemorrhages among aspirin users than nonusers (P<0.001). Initial visual acuity and visual fields were significantly worse in aspirin users than nonusers in nonischemic CRVO and hemi-CRVO, but did not differ for ischemic CRVO. Among patients with nonischemic CRVO who initially had 20/60 or better visual acuity, there was a significant association of aspirin use with visual acuity deterioration. The odds ratio of visual acuity deterioration, adjusting for age, diabetes, ischemic heart disease, and hypertension, for aspirin users relative to nonusers was 2.24 (95% confidence interval [CI], 1.14-4.41; P = 0.020). Of those whose macular edema resolved, overall cumulative visual acuity outcome also suggested a higher percentage with deterioration among aspirin users, odds ratio for deterioration of 3.62 (95% CI, 0.97-13.54; P = 0.05) for aspirin users relative to nonusers. For the nonischemic CRVO patients with 20/70 or worse visual acuity at the initial visit, after resolution of macular edema, improvement in visual acuity was less likely in the aspirin users than in nonusers (odds ratio, 0.18; 95% CI, 0.04-0.72; P = 0.016).

persantine 50 mg

The noninvasive diagnosis of coronary artery disease in the elderly can occasionally be difficult. Intravenous dipyridamole-thallium imaging is a potentially useful diagnostic test to determine presence and severity of coronary disease; however, the safety of the procedure has not been determined in an older population. The side effect profile and frequency of severe ischemic responses after 0.56 mg/kg of intravenous dipyridamole were compared in 101 patients greater than or equal to 70 years old and 236 patients less than 70 years old. There were no side effects in 64% and 62% of patients greater than or equal to 70 and less than 70 years old, respectively (p = NS). Among the 337 patients tested, there were no complications of myocardial infarction or death. The most common cardiac side effect was chest pain, which occurred in 21 (21%) of the 101 patients aged greater than or equal to 70 years and in 64 (27%) of the 236 patients less than 70 years (p = NS). Aminophylline was required to reverse cardiac or noncardiac side effects in 15 (15%) and 36 (15%) of the patients greater than or equal to 70 and less than 70 years old, respectively (p = NS). A severe ischemic response occurred in 2% and 2.5% of patients greater than or equal to 70 and less than 70 years old, respectively (p = NS). The sensitivity of intravenous dipyridamole-thallium imaging for obstructive coronary artery disease was 86% (25 of 29) and 83% (68 of 82) in older and younger patients, respectively (p = NS); the specificity was 75% (6 of 8) and 70% (16 of 23), respectively (p = NS). Thus, intravenous dipyridamole-thallium imaging is a safe noninvasive method for assessment of older patients with obstructive coronary disease; its side effect profile and diagnostic accuracy are similar to those seen in younger patients. The technique is associated with severe ischemic responses in only a small minority of patients.

persantine 75 mg

After local tissue depositioning of 133Xenon (133Xe) the regional washout is usually registered by a NaI(Tl) detector. The residual radioactivity of 133Xe is usually measured at its 81 keV photopeak. However, using small Silicon (Si) photodiodes it is feasible to measure only the low-energy activity in the X-ray energy range. In the myocardium of open chest dogs 133Xe washout measurements by a matrix of Si diodes composed in a 4 x 4 array and a conventional NaI(Tl) detector were carried out simultaneously. Fourteen separate pairs of measurements were performed in 3 dogs. When the Si-diodes in the matrix were selected individually in accordance to the position with reference to the diode with maximum count rate or pooled, comparisons could be made between the corresponding washout rate constants measured by the reference detector. In the correlation between the rate constants the intercepts with the y axis were not significantly different from zero allowing the correlation lines to be fitted through (0.0). The slope of the correlation line was close to unity. The registration of the low-X-ray energy of 133Xe by the Si-detectors is an alternative to the conventional high energy activity recording appearing from the gamma-energy of the photopeak. The detector matrix concept allows elimination of motion artefacts and indicator distribution in the myocardial tissue. Due to the uniformity and low cost of Si-diodes the perspective may be the introduction as a disposable transducer useful during cardiac surgery for example.

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Clinical observations suggest that a casual relationship exists between the increased platelet aggregability and complicated migraine attacks which appear during the course of oral contraception. In the case reported the attacks continued to appear after contraception was stopped. When reduction of the platelet aggregability was noted, a decrease in the frequency of the migraine attacks, and their eventual disappearance, was seen. Studies on the subject suggest that OCs have the property of conversion of an ordinary migraine into a particularly malignant form of cerebral infarction. Additional clinical and experimental data are required to fully evaluate the problem.

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We performed a study to evaluate the effect of acetylsalicylic acid (ASA) plus dipyridamole on the retinal vascular pattern over 3 months in rats with experimental diabetes mellitus. Rats treated with ASA alone showed a continuous vascular bed and less tortuous vessels than untreated diabetic rats. Rats treated with ASA plus dipyridamole showed a continuous vascular bed, scarce tortuous vessels and vascular diameters similar to those in nondiabetic control rats. The findings were related to aortic prostacyclin production: treatment with ASA alone produced a reduction in prostacyclin production, whereas treatment with ASA plus dipyridamole resulted in normal prostacyclin production. ASA alone or with dipyridamole inhibited collagen-induced aggregation in whole blood by 57% compared with the untreated diabetic rats.

persantine dose calculation

After uncomplicated myocardial infarction, clinical and ergometric data before hospital discharge allow identification of patients at high risk of further cardiac events. These relate to the necrosed myocardium (left ventricular dysfunction, sometimes latent, and arrhythmia risk), and also to the jeopardized myocardium: the moderate sensitivity and specificity of classical exercise stress testing for the detection of this often silent ischaemia are much improved by stress radionuclide and echocardiographic techniques (exercise, dipyridamole, dobutamine. . .), the large scale indications of which remain to be validated.

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We evaluated the short-term and mid-term differences in perfusion and function after off-pump and on-pump coronary artery bypass grafting (CABG) using gated myocardial single photon emission computed tomography.

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In a randomised, double-blinded, placebo-controlled, cross-over study we measured the forearm blood flow response to the intrabrachial administration of dipyridamole in 14 healthy male subjects before and after treatment with placebo or eplerenone (50 mg bid for 8 days). The forearm blood flow during administration of dipyridamole (10, 30 and 100 µg·min(-1)·dl(-1)) was 1.63 (0.60), 2.13 (1.51) and 2.71 (1.32) ml·dl(-1)·min(-1) during placebo use, versus 2.00 (1.45), 2.68 (1.87) and 3.22 (1.94) ml·dl(-1)·min(-1) during eplerenone treatment (median (interquartile range); P = 0.51). Concomitant administration of the adenosine receptor antagonist caffeine attenuated dipyridamole-induced vasodilation to a similar extent in both groups. The forearm blood flow response to forearm ischemia, as a stimulus for increased formation of adenosine, was similar during both conditions.

persantine generic

1. The nerve-evoked contractions elicited by transmural electrical stimulation of mouse urinary bladders superfused in modified Krebs Ringer buffer containing 1 microM atropine plus 3.4 microM guanethidine were inhibited by adenosine (ADO) and related nucleoside analogues with the following rank order of potency: R-phenylisopropyladenosine (R-PIA) greater than cyclohexyladenosine (CHA) greater than 5'N-ethylcarboxamido adenosine (NECA) greater than ADO greater than S-phenylisopropyladenosine (S-PIA). Tissue preincubation with 8-phenyltheophylline (8-PT) displaced to the right, in a parallel fashion, the NECA concentration-response curve. 2. The contractions elicited by application of exogenous adenosine 5'-triphosphate (ATP) were also inhibited by ADO and related structural analogues. The rank order of potency to reduce the motor response to ATP was: NECA greater than 2-chloroadenosine (CADO) greater than R-PIA greater than ADO greater than CHA greater than S-PIA. 3. The ADO-induced ATP antagonism was of a non-competitive nature and was not specific. Tissue incubation with 10 microM NECA not only reduced the motor responses elicited by ATP, but also 5-hydroxytryptamine, acetylcholine and prostaglandin F2 alpha. The action of NECA was antagonized following tissue preincubation with 8-PT. The inhibitory action of NECA was not mimicked by 10 microM CHA. 4. The maximal bladder ATP contractile response was significantly increased by tissue preincubation with 5-30 microM 8-PT. 5. The 0.15 Hz evoked muscular twitch was significantly increased by 8-PT while dipyridamole consistently reduced the magnitude of the twitch response. These results are consonant with the hypothesis that an endogenous ADO tone modulates the bladder neurotransmission. 6. A working model is proposed suggesting the presence of ADO-Al and A2 receptors in the mouse urinary bladder. The A1 receptor subpopulation is probably of presynaptic origin whereas the smooth muscle membranes contain a population of the A2 receptor subtype.

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The effect of hypoxia on the release of adenosine was studied in vitro in the rat whole carotid body (CB) and compared with the effect of hypoxia (2%, 5% and 10% O(2)) on adenosine concentrations in superior cervical ganglia (SCG) and carotid arteries. Moderate hypoxia (10% O(2)) increased adenosine concentrations released from the CBs by 44%, but was not a strong enough stimulus to evoke adenosine release from SCG and arterial tissue. The extracellular pathways of adenosine production in rat CBs in normoxia and hypoxia were also investigated. S-(p-nitrobenzyl)-6-thioinosine (NBTI) and dipyridamole were used as pharmacological tools to inhibit adenosine equilibrative transporters (ENT) and alpha,beta-methylene ADP (AOPCP) to inhibit ecto-5'-nucleotidase. Approximately 40% of extracellular adenosine in the CB came from the extracellular catabolism of ATP, under both normoxic and hypoxic conditions. Low pO(2) triggers adenosine efflux through activation of NBTI-sensitive ENT. This effect was only apparent in hypoxia and when adenosine extracellular concentrations were reduced by the blockade of ecto-5'-nucleotidase. We concluded that CB chemoreceptor sensitivity could be related to its low threshold for the release of adenosine in response to hypoxia here quantified for the first time.

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The specific P1-purinoceptor agonist 2-chloroadenosine (3 X 10(-7) M to 3 X 10(-6) M) reduced the magnitude of excitatory junction potentials (e.j.p.s) recorded from guinea-pig vas deferens in response to field stimulation of the sympathetic nerves, but did not have any direct effect on the resting membrane potential. Trains of pulses (2-16 Hz) for 20 s produced a biphasic contractile response, both phases of which were reduced by 2-chloroadenosine (10(-7) to 10(-5) M) by up to 45%. In contrast, the same concentrations of 2-chloroadenosine enhanced by about 20% the contractile response of the vas deferens to exogenously applied adenosine 5'-triphosphate (ATP) and noradrenaline (NA). The specific P1-purinoceptor antagonist 8-phenyltheophylline (8-PT) reversed the inhibitory effect of 2-chloroadenosine on e.j.p. magnitude, partially reversed the inhibitory action of 2-chloroadenosine on both phases of the contractile response to nerve stimulation, and partially reversed the enhancing effect of 2-chloroadenosine on responses to exogenous ATP and NA. We propose that release of ATP and NA (as cotransmitters) from sympathetic nerves can be modulated by prejunctional P1-purinoceptors.

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To validate coronary sinus flow measurements for quantification of global left ventricular (LV) perfusion by means of velocity-encoded cine (VEC) magnetic resonance (MR) imaging and flow probes.

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CFR is inversely related to the number of conventional risk factors in patients with 1-vessel CAD and intermediate coronary artery stenosis, whereas this influence is less evident in patients with more severe stenosis.

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Dentists making management decisions regarding patients taking antiplatelet therapy should consider the patient's risk of experiencing perioperative hemorrhage against the risk of experiencing complications associated with thromboembolic events. The risk of perioperative bleeding complications is low for patients taking single or dual antiplatelet therapy. Intraoperative and postoperative bleeding can be controlled with local hemostatic measures.

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The coronary angiography provides information on the anatomical state of the coronary tree, while myocardial perfusion scintigraphy (MPI) facilitates the evaluation of the grade of ischaemia that a particular stenosis produces. The purpose of MPI is to detect the coronary stenosis that provokes the ischaemia and is termed the "culprit lesion". The aim of this study was to evaluate the accuracy of 1-day DypEX 99mTc-tetrofosmin tomography in the identification and localization of culprit lesion in the patients with known coronary artery disease (CAD).

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Insulin resistance is a metabolic spectrum that progresses from hyperinsulinemia to the metabolic syndrome, impaired glucose tolerance, and finally type 2 diabetes mellitus. It is unclear when vascular abnormalities begin in this spectrum of metabolic effects.

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persantine drugs 2017-11-26

The effects of prostacyclin (PGI2) with and without heparin were studied in 28 dogs that underwent 2 hours of cardiopulmonary bypass. Five groups were created: group I (six dogs) received heparin, 1.25 mg/kg; group II (six dogs) received low-dose heparin, 0.5 mg/kg buy persantine , and PGI2, 500 ng/kg/min; group III (six dogs) received low-dose heparin alone; group IV (four dogs) received PGI2, 500--1000 ng/kg/min; and group V (six dogs) received ibuprofen, 12.5 mg/kg, dipyridamole, 1 mg/kg, PGI2, 20 ng/kg/min, and low-dose heparin. Significant clot deposition occurred in the oxygenators in groups III, IV and V. Platelet counts decreased to a mean of 36.8 +/- 5.7% (+/- SEM) of control in group I, which had normal clinical heparin dose for dogs, but to only 74 +/- 7% of control in group II. This improvement was significant (p less than 0.005). Platelet aggregation induced by adenosine diphosphate 60 minutes after CPB showed poor aggregation in group I but almost normal aggregation in group II. Protamine was unnecessary in groups that received PGI2. PGI2 in combination with low-dose heparin provides adequate anticoagulation during cardiopulmonary bypass in dogs, preserves platelet number and function and is associated with minimal postoperative bleeding.

persantine and alcohol 2015-11-08

The forearm vasodilator responses to three increasing periods of forearm ischaemia (2, 5 and 13 min) were determined during placebo buy persantine infusion. Forty minutes after the last reperfusion period, this procedure was repeated during intra-arterial infusion of dipyridamole (7.4 nmol min(-1) per 100 ml forearm). At least 2 weeks later, this whole procedure was repeated, but now in the presence of caffeine (90 microg min(-1) per 100 ml volume).

persantine dosage chart 2017-07-18

High-dose GIK has an acute beneficial effect on regional left buy persantine ventricular function in patients with acute myocardial infarction. This beneficial effect is potentiated by low-dose DIP coadministration.

persantine 50 mg 2016-08-16

Abnormalities on rubidium-82 buy persantine positron emission tomography were predictors of adverse events in heart transplant patients. Larger prospective studies are required to confirm these findings.

persantine oral dose 2017-01-16

Venous rethrombosis following thrombectomy is a common event. The aim of the present study was to verify the action of heparin, heparin plus acetyl salicylic acid (ASA) and dipyridamole, and of an arteriovenous fistula (AVF) in the prevention of this complication. Thrombosis was induced in 48 male rabbits by the injection of thrombin in a segment of the left jugular vein, in which the blood flow was arrested for 10 minutes. After 48 hours, the animals were randomly allocated into one of 4 groups of treatment: (1) control, (2) subcutaneous heparin (600 S.I. Units/kg--8/8 hours), (3) heparin, in the same dose, plus ASA (10 mg/kg/once a day), and dipyridamole (0.5 mg/kg thrice a day), (4) an AVF was surgically constructed between the left carotid artery and the left maxillar vein. After 30 minutes, thrombectomy was performed. The venous blood flow, the hematocrit, activated partial thromboplastin time and thrombin time tests were performed before, right after the thrombectomy and 48 hours after thrombectomy. Venography was performed after thrombectomy and at the end of the experiment. The animals were killed 48 hours after thrombectomy and the veins were examined macroscopically. Venous rethrombosis was significantly prevented only in the AVF group (9/12), when compared to control group (0/12), heparin group (1/12) and heparin plus antiaggregating agents buy persantine group (2/12). These results validate further clinical and experimental investigations with the use of AVF to prevent rethrombosis after venous thrombectomy, when a reduction of venous flow is present.

persantine generic 2017-09-30

Initial results indicate that a combination buy persantine of stress MR myocardial perfusion imaging and MR ventriculography is feasible and that this technique can detect myocardial ischemia with an accuracy similar to that of scintigraphy. This technique may make more complete noninvasive assessment of myocardial ischemia possible.

persantine generic name 2015-09-18

Adherence to secondary stroke prevention medication was between 87% and 100% at 6 weeks with similar findings at 6 months after discharge. We speculate that these high compliance rates may be due to one-on-one stroke nurse counselling and the use of stroke buy persantine information packs, which include information about the importance of adherence to secondary prevention medication.

persantine overdose 2017-04-25

Our search strategy identified 14 reports of 10 studies for consideration, of which five met the inclusion criteria, involving 484 women. Four studies compared heparin (alone or in combination with dipyridamole) with no treatment; and one compared trapidil (triazolopyrimidine). While there were no statistically significant differences identified for the primary buy persantine outcomes following heparin treatment, it was associated with a reduction in the risk of pre-eclampsia, eclampsia, and infant birthweight less than the 10th centile for gestational age.

persantine medication classification 2015-11-01

Amaurosis fugax associated with anomalous origin of the ophthalmic artery without occlusion of internal carotid artery is very rare. We are reporting such a case of amaurosis fugax with anomalous origin of the ophthalmic artery and atheromatous stenosis of the external carotid artery. A 49-year-old-man was referred to our neurosurgical clinic because of transient monocular blindness. The patient was diagnosed as carotid TIA and was treated within aspirin and dipyridamole. In spite of this treatment, he experienced further transient dimness of vision in the right eye, several times during a period of one month. On admission, general, physical and neurological examinations disclosed no abnormality except for a bruit over the right carotid artery. Platelet adhesiveness and aggregation were slightly elevated. Right common carotid angiogram showed marked stenosis of the origin of the external carotid artery buy persantine and small "sail-like" plaque in the internal carotid sinus. The angiogram also demonstrated that the right ophthalmic artery was originated from the middle meningeal artery through the superior orbital fissure. Since choroid crescent was observed, all the branches of the ophthalmic artery including the central retinal artery were filled by the external carotid system. The right ophthalmic artery was never visualized by the selective internal carotid angiography. Subsequently right carotid endarterectomy was performed without complication. One year later he remains asymptomatic.(ABSTRACT TRUNCATED AT 250 WORDS)

persantine medication 2017-02-14

The effects of physiological adenosine concentrations on platelet aggregation in buy persantine vitro were studied. Furthermore, we evaluated the effect of elevated adenosine levels in vivo, produced by the administration of dipyridamole, on platelet aggregation in whole blood. Platelet aggregation in plasma was significantly inhibited in vitro by adenosine at all concentrations tested in the physiological range (0.1-1.0 microM, 14-63% inhibition). Dipyridamole by itself had no effect at a therapeutic plasma concentration in vitro. Ten patients with ischaemic cerebrovascular disease were given 100 mg dipyridamole orally, and the level of adenosine increased from 0.22 to 0.29 microM (p less than 0.05). This was accompanied by a decrease in ADP-induced platelet aggregation in whole blood (17 to 15 ohms, p less than 0.05). When dipyridamole was infused in 11 healthy subjects, the adenosine level was not significantly elevated but the platelet aggregation was inhibited (from 13 to 11 ohms, p less than 0.05). It is concluded that adenosine may be of importance in the physiological regulation of platelet aggregation. Furthermore, dipyridamole treatment is associated with an anti-aggregatory effect that is probably mediated by its effect on endogenous adenosine levels.

persantine cost 2016-03-25

The plot of all three tracers versus flow achieved a plateau at a higher flow range. However, sestamibi showed a higher mean retention than either tetrofosmin (group 1, 0.27 +/- 0.11 vs. 0.16 +/- 0.06 mL/g/min, respectively; P < 0.01) or Q12 (group 2, 0.32 +/- 0.13 vs. 0.09 +/- 0. buy persantine 03 mL/g/min, respectively; P < 0.01). Furthermore, when a linear regression analysis was performed to assess the relationship between retention and microsphere-determined flow, sestamibi showed a greater increment in retention than did tetrofosmin or Q12.

persantine 25mg tabs 2015-03-19

Forty-five patients survived during a follow up period of 3-37 months. Ejection fraction improved from 21.7+/-7.4% to 30 buy persantine .6+/-6.9%, 36.5+/-4.3% and 37.7+/-4.2% at 3rd, 6th and 12th months, respectively. Left ventricular end-diastolic diameter was reduced from 66.1+/-4.9 mm to 62.6+/-3.9 mm, 60.5+/-2.9 mm and 59.3+/-4.2 mm respectively. Previously non-viable areas on DTS were found to contain viable tissue and MRI showed hypokinesia in previously akinetic areas. NYHA class improved to I-II. No significant arrhythmias were noted during the follow-up period. One patient died due to low cardiac output and one patient died due to septic shock.

persantine 75 mg 2016-03-22

Heart involvement is a frequent cause of morbidity and mortality in autoimmune diseases. All cardiac structures can be involved: pericardium, endocardium, myocardium, coronary circle, and conduction system. In the last decade many patients affected by autoimmune diseases have been treated with hematopoietic stem cell transplantation; the vast majority of these transplants have been autologous, and most have been within the context of phase I and II clinical trials; now, phase III trials are ongoing. Patients affected by autoimmune disease often have cardiac involvement which potentially puts them at higher risk from acute cardiotoxicity due to alkylating agents such as cyclophosphamide. The authors propose an algorithm for cardiac assessment before stem cell transplantation in order to identify those patients at highest risk, prior to administering any drug, to avoid further worsening of heart involvement and possible organ failure.A baseline assessment includes physical examinations, ECG to highlight arrhythmias and conduction abnormalities, chest X-ray to evaluate the presence of pericardial effusion and cardiothoracic ratio.A second-step evaluation includes echocardiography (which assesses the following parameters: left ventricular ejection fraction, diastolic function, tricuspid gradient, pulmonary acceleration time, right ventricular diameter and pericardial effusion, wall motion), Holter ECG that may highlight the presence of arrhythmias and biohumoral parameters such as brain natriuretic peptide and troponin I. If these parameters show abnormalities, a further step is required before transplantation. Cardiac catheterization allows to identify ischemic coronary diseases and pulmonary artery hypertension. Intensive monitoring with life card assessment before inclusion might establish ischemic coronary diseases or complex arrhythmias requiring pacing. Magnetic resonance imaging and single-photon emission computed tomography with dipyridamole are useful tools to evaluate the coronary flow. Treatment of ischemic coronary disease (assessment for revascularization), cardiac failure, pulmonary artery hypertension and arrhythmias constitutes buy persantine the final step. The aim is to optimize cardiac status in order to allow intense immunosuppressive treatments.

persantine drug interactions 2016-08-07

Rapidly progressive glomerulonephritis in children in rare, and we have therefore described 4 cases in Black children. All had evidence of a preceding streptococcal infection and there were crescents in more than 80% of the glomeruli seen on histological examination. The buy persantine dominant clinical features were oliguria or anuria in a setting of nephritis or nephrotic syndrome, with a relentless progression to chronic renal failure and death. Quadruple therapy with cyclophosphamide, steroids, heparin and dipyridamole in 3 of the patients was of no lasting benefit and was attended by severe complications. Guidelines to the monitoring of children with post-streptococcal glomerulonephritis for the early detection of this uncommon complication are given.

persantine dosage 2015-08-15

Continuing improvements in cardiac surgery and a wider selection of young patients for prosthetic valve replacement mean that an increasing number of women of childbearing age will undergo such procedures and will also subsequently become pregnant. At present, most patients with prosthetic heart valves are treated with anticoagulant drugs for life. The main problem with anticoagulant therapy during pregnancy is fetal and maternal hemorrhage. Congenital anomalies have been described in infants born to mothers treated with coumarin derivatives during Motrin 2 Tablets the first trimester of pregnancy. Dipyridamole is known to decrease the adhesiveness of platelets or their ability to aggregate. We report the successful outcome of four pregnancies in patients with Starr-Edwards prostheses who were treated with dipyridamole during their pregnancies.

persantine 10 mg 2016-10-04

Abnormal small coronary artery function may cause limited coronary flow responses to stress, resulting in anginal symptoms and ischemia in some patients with chest pain despite angiographically normal coronary arteries. To assess Parlodel Dosing the exercise hemodynamic correlates of coronary flow abnormalities measured in the cardiac catheterization laboratory, 105 patients with microvascular angina (defined as an increase in coronary vascular resistance during pacing stress after ergonovine administration in the absence of significant epicardial constriction and associated with provocation of the patient's typical chest pain) and 27 patients without any coronary flow abnormality (normal) were analyzed. Of the 105 patients with microvascular angina, 75 had normal electrocardiographic responses to treadmill exercise testing, 22 had ischemic responses, and eight had bundle branch block during exercise. All 27 normal patients had normal electrocardiographic responses to exercise. Patients with ischemic electrocardiographic responses (0 +/- 7%, p less than 0.01), and those with bundle branch block (-2 +/- 6%, p less than 0.01) had abnormal left ventricular ejection fraction responses to exercise compared with the normal group, who demonstrated an 8 +/- 6% increase in left ventricular ejection fraction by radionuclide angiography during exercise, and microvascular angina patients with a normal electrocardiographic response to exercise, who demonstrated a 5 +/- 7% increase in ejection fraction. Although the microvascular response to ergonovine was no different among the three microvascular angina exercise groups, the administration of dipyridamole caused less coronary vasodilation in those patients with apparently ischemic or bundle branch block responses to exercise compared with those with normal electrocardiograms during exercise.(ABSTRACT TRUNCATED AT 250 WORDS)

cost of persantine 2017-03-10

Statins protect against ischemia Zovirax 200mg Dosage -reperfusion injury and limit myocardial infarct size (IS). This effect is dependent on increased generation of adenosine by ecto-5' nucleotidase and downstream activation of cyclooxygenase-2 (COX2). Dipyridamole (DIP) augments the IS-limiting effects of statins by blocking the cellular reuptake of adenosine; whereas aspirin (ASA) attenuates the effect by inhibiting COX2. We studied the effect of acute administration of DIP, ASA and their combination on the IS-limiting effect of simvastatin (SIM).

persantine dosing chart 2017-11-14

1. The effects of cholinergic and purinergic stimulation on action potential, force of contraction and 86Rb efflux were investigated in cat atrial and/or ventricular heart muscle. 2. Acetylcholine and carbachol exerted a concentration-dependent negative inotropic effect in cat atrial heart muscle. Carbachol 10 mumol l-1 completely abolished the force of contraction and increased the rate constant of 86Rb efflux 2-3 fold, whereas the action potential duration was shortened to about 1/10 of its length under control conditions. 3. The effects of acetylcholine and carbachol in cat atrial heart muscle were mimicked, qualitatively, by adenosine and its analogues 5'-(N-ethyl)-carboxamido-adenosine (NECA) and (-)-N6-(R-phenyl-isopropyl)-adenosine (R-PIA). Maximal purinergic effects, however, amounted to about 15-50% in comparison to those of cholinergic stimulation. 4. In cat ventricular heart muscle, cholinergic or purinergic stimulation had no significant effects on the force of contraction in the absence of a cyclic AMP-dependent positive inotropic effect. Carbachol antagonized the positive inotropic effect elicited by either 3-isobutyl-1-methylxanthine, isoprenaline or cyclic 8-(4-chlorphenylthio)adenosine-3':5'-monophosphate; NECA and R-PIA were less effective. The inhibition by carbachol of the effects of isoprenaline was not related to a change in the rate constant of 86Rb efflux. 5. It is concluded that the effects of cholinoceptor and purinoceptor agonists in the cat heart involve a change in the potassium conductance in the atrium, whereas the effects in the ventricle Zanaflex 1 Mg may be related to changes of intracellular cyclic AMP levels. It seems reasonable to assume that, in comparison to cholinergic stimulation, a low density of purinoceptors in the cat heart is responsible for the relatively weak effects of adenosine agonists in this species.

persantine dose calculation 2016-04-10

Eighty-six patients (19 percent) had one or more of the following postoperative complications: prolonged myocardial ischemia (61 patients), myocardial infarction (22), congestive heart failure (20), and severe ventricular tachyarrhythmia (2). Twenty patients died postoperatively (4.4 percent), half of them from cardiac causes. Information about myocardial perfusion obtained from dipyridamole-thallium SPECT Vasotec Non Generic did not accurately predict adverse cardiac outcomes. The best correlates of cardiac complications were definite clinical evidence of coronary artery disease (odds ratio, 2.6; 95 percent confidence interval, 1.6 to 4.3) and age greater than 65 years (odds ratio, 2.3; 95 percent confidence interval, 1.4 to 3.6). Measurement of the ejection fraction was useful only in the prediction of left ventricular failure. Age greater than 65 years was the only predictor of death (odds ratio, 26.4; 95 percent confidence interval, 3.5 to 200.0).

persantine tablets 2016-11-18

This study consisted of a dose-escalating, single-blinded phase and a placebo-controlled, double-blinded phase conducted in healthy, young adults with documented mild, intermittent, asthma. In the single-blinded phase, 3 sequential cohorts of 8 subjects received intravenous binodenoson (0.5, 1.0, and 1.5 microg/kg). In the double-blinded phase, commenced after medical review of results from the single-blinded phase, subjects were randomly assigned 2:1 to either binodenoson 1.5 microg/kg (n=41) or placebo (n=22). The primary end point was clinically significant bronchoconstriction, defined as a decrease in forced expiratory volume in 1 second of >/=20% from the preinjection measure. Secondary safety end points were changes from preinjection measure in forced expiratory volume in 1 second, forced vital capacity, and forced expiratory flow during the middle 50% of the forced vital capacity; vital signs; pulse oximetry; and adverse events. Binodenoson caused no clinically significant bronchoconstriction Neurontin Yellow Capsule or alterations in pulmonary function parameters and transiently increased heart rate and systolic blood pressure. The most common treatment-emergent adverse events were tachycardia, dizziness, and flushing.

persantine drug class 2017-10-08

Regadenoson stress (82)RbCl PET perfusion defect and cardiac function measurements are visually and quantitatively equivalent to dipyridamole studies and can be obtained with the clinical advantages Lexapro Generic Name of regadenoson.

persantine drug 2017-04-14

This study suggests an excellent prognosis for patients with no or mild ischemia as assessed by SPECT performed more than 3 months after coronary angioplasty. Those patients with mild persistent Coumadin Overdose Death defects did not present a significantly worse outcome.

persantine 25 mg 2016-11-01

The role of myocardial perfusion imaging has been extended from diagnosis to management and prognosis in patients with coronary artery disease. Great emphasis has been placed on improving the accuracy of the test to better define perfusion, viability, and the extent of damage of the myocardium. To achieve this goal, investigators have focused on several areas including imaging technique, in which the accuracy of single-photon emission CT has been compared with that of positron emission tomography; radiopharmaceuticals, in which 201Tl has been compared with 99mTc-sestamibi and 99mTc- Anafranil User Reviews teboroxime; stress modalities, in which dipyridamole and adenosine stress have been compared with exercise; myocardial viability, as determined by delayed and reinjection 201Tl imaging or by measurement of cellular integrity using 82Rb compared with 18fluorodeoxyglucose metabolic PET imaging; and assessment of myocardial salvage and prognosis by exercise or dipyridamole 201Tl imaging in acute myocardial infarction.

persantine dose 2017-09-11

A 3-year-old male patient with hereditary spherocytosis who developed moyamoya syndrome, presenting hemiplegia, and slurred speech is reported. Transient ischemic attacks occurred repeatedly with hemolytic crises. Magnetic resonance imaging and angiography revealed bilateral occlusion of the internal carotid and middle cerebral arteries with the formation of moyamoya vessels and multiple infarctions in the basal ganglia. Although splenectomy can increase the risk of stroke, no stroke occurred after splenectomy. On aspirin and dipyridamole therapy the patient has been free of neurologic deficits and progression of the vasculopathy for 5 years. This rare observation suggests that anemic hypoxia more greatly contributes to the progression of moyamoya syndrome than postsplenectomy thrombocytosis or reduced deformability of spherocytes.

persantine drug classification 2015-03-07

1 Adenosine, adenosine 5'-triphosphate (ATP), adenine, inosine and guanosine all caused concentration-dependent relaxations of guinea-pig tracheal smooth muscle in vitro. The relative potencies in descending order were: adenine greater than or equal to guanosine greater than inosine greater than or equal to adenosine greater than or equal to ATP. 2 Responses to the purine compounds were unaffected by propranolol (1 mug/ml). 3 The spasmolytic potencies of adenosine and ATP were greatly enhanced in the presence of the adenosine uptake blocking drugs dipyridamole, hexobendine or Dilazep, whereas responses to adenine were unaffected and those to inosine and guanosine were reduced. 4 The spasmolytic potencies of noradrenaline, aminophylline, prostaglandin E2 and glyceryl trinitrate were unaffected by dipyridamole, hexobendine and Dilazep. 5 It is suggested that an adenosine uptake process may exist in the trachea of the guinea-pig and that this process is inhibited by dipyridamole, hexobendine and Dilazep.