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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.

persantine dose

Eighteen patients had preserved (group A) and 16 abnormal LVEF reserve (group B; range -7 to -32). Group B patients had greater wall thickness than group A, but resting volumes, LVEF, resting and Dip MBF, and myocardial flow reserve were similar. Group B had slightly higher summed stress score and summed difference score in visual analysis than group A, and a significantly higher summed stress wall motion score. In group B, resting TPG was slightly lower (1.31 ± 0.29 vs. 1.37 ± 0.34, p <0.05), and further decreased after Dip, whilst in group A it increased (B = 1.20 ± 0.39, p < 0.0001 vs. rest and vs. A = 1.40 ± 0.43). The number of segments per patient with TPG <1 was higher than in group A (p < 0.001) and was a significant predictor of impaired LVEF reserve (OR 1.86, p < 0.02), together with wall thickness (OR 1.3, p < 0.02).

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All patients over 18 years, who attended the stroke unit between 1 October 2002 and 31 December 2002 and were on antiplatelet therapy were included in the study. Data were collected through retrospective chart review and recorded on a standardized data collection form. Continuous and categorical data were expressed as mean and counts respectively. Factors that determine frequency and pattern of antiplatelet therapy were assessed in multiple logistic regression models.

persantine drug interactions

Dipyridamole, a potent inhibitor of the nucleoside transport into cells, has recently been reported to stimulate the proliferation of capillary endothelial cells in the heart and skeletal muscle of rats following long-term treatment. We tested this drug on cultured calf aortic endothelial cells and obtained no evidence that dipyridamole is able to stimulate directly the proliferation and migration of these cells. By using the chorioallantoic membrane model we observed that the pharmaceutical preparation Curantyl induces vascular responses almost regularly. This effect, however, was found to be dependent on the high concentration of hydrogen ions in this preparation and could be prevented by increasing the pH value. A direct angiogenic effect of dipyridamole could not be demonstrated on the CAM.

persantine 10 mg

Patients with peripheral arterial disease improve their outcome by receiving aspirin with dipyridamole or ticlopidine after a revascularisation procedure.

persantine oral dose

Treatment with the association ASA-DIP was the only one to significantly reduce interaction, as both the size of aggregates and the extent of the covered surface decreased when whole blood was treated, and only the covered surface did when red cells were separately treated. When treating only platelets, the reduction of aggregates had no significance.

cost of persantine

Vascular access grafts implanted in dialysis patients are prone to failure in the long-term because of stenosis and occlusion caused by neointimal hyperplasia. Local delivery of antiproliferative drugs may be effective to prevent this consequence while minimizing the systemic side effects they cause. We developed a combination of poly(lactide-co-glycolide) (PLGA) microspheres with ReGel, an injectable copolymer, as a sustained-release system for perivascular delivery of an antiproliferative drug, dipyridamole. Dipyridamole-incorporated PLGA microspheres with various molecular weights (MWs) of PLGA were prepared by oil-in-water emulsion method. Encapsulation efficiency and surface morphology of microspheres were characterized. In vitro release kinetics of dipyridamole from ReGel or from microspheres/ReGel was experimentally determined. Without microspheres, 40% of the dipyridamole was released from ReGel as an initial burst in the first 3 days followed by continuous release in the subsequent 2 weeks. The use of PLGA microspheres decreased the initial burst and extended dipyridamole release from 23 to 35 days with increasing MW of PLGA. The highest MW PLGA showed a lag time of 17 days before consistent drug release occurred. Mixing microspheres and ReGel with two different MW PLGA achieved a continuous release for 35 days with little initial burst. In vivo release of dipyridamole from microspheres/ReGel exhibited a comparable release pattern to that seen in vitro. This injectable platform is a promising technique for sustained perivascular delivery of antiproliferative drugs.

persantine 50 mg

To evaluate the prevalence of embolic events and relevant factors in elderly Chinese patients with atrial fibrillation(AF), and to provide evidence on ways to prevent embolic events.

persantine 25 mg

Extracellular adenosine in the striatum of adult male rats was measured by the use of a microdialysis fibre inserted transversely in the striatum. The adenosine concentration in samples of perfusate was determined by HPLC coupled to U.V. detection. The adenosine concentration (corrected for recovery) decreased after implantation of the probe. Two hours later it was 1.83 +/- 0.22 in anaesthetized rats, whereas it was 40% higher in rats in which anaesthesia had been discontinued. Twenty-four hours later the adenosine concentration was 0.124 +/- 0.09 microM; the addition of dipyridamole (100 microM), an adenosine uptake blocker, to the perfusate resulted in a 76% increase in adenosine concentration in the effluent, whereas addition of the adenosine deaminase inhibitor erythro-2-(hydroxy-3-nonyl) adenine (100 microM) caused a 260% increase. The addition of tetrodotoxin (1 microM) was followed by a decrease in basal adenosine concentration and a partial inhibition of the increase in adenosine evoked by K+ depolarization. The increase induced by high K+ was markedly inhibited by the NMDA receptor antagonist D(-)-amino-7-phosphoeptanoic acid (1 mM, D-AP7). These findings indicate that the extracellular adenosine level is influenced by neuronal activity, and that under strong depolarizing conditions the increase in adenosine level involves NMDA receptor activation.

persantine 75 mg

This study was designed to investigate the effects of the cardiovascular drug dipyridamole on fatty acid metabolism in isolated cardiac myocytes. Effects of dipyridamole on the oxidation of long-chain (palmitate) fatty acid, medium-chain (octanoate) fatty acid, and the carbohydrate intermediate (pyruvate) were determined by using isolated cardiac myocytes from both normal and diabetic rats. Dipyridamole increased palmitate oxidation in a concentration-dependent manner in both normal and diabetic myocytes. Maximal stimulation of palmitate oxidation (175% of control) was observed with 100 microM dipyridamole. In contrast, oxidation of octanoate and pyruvate was not affected. The stimulation of palmitate oxidation by dipyridamole persisted despite its removal from the incubation medium. In contrast to the effect in myocytes, palmitate oxidation was not affected by dipyridamole in isolated rat heart mitochondria. Palmitate uptake was increased by 2.5- and 1.6-fold when palmitate concentration was adjusted to 0.05 and 0.2 mM, respectively. Dipyridamole did not affect lipolysis in isolated myocytes. When dipyridamole (100 microM) and L-carnitine (5 mM) were added together to the incubation medium, palmitate oxidation was further increased to 223% of the control. The nucleoside transport inhibitor nitrobenzylthioinosine (NBMPR) failed to increase palmitate oxidation in isolated myocytes. Although palmitate oxidation in diabetic cells is much higher than that in normal myocytes, dipyridamole increased palmitate oxidation by 243% in diabetic myocytes over its baseline oxidation rate in normal cells. These results suggest that increased palmitate oxidation in isolated cardiac myocytes after dipyridamole administration occurs independent of effects on either the phosphodiesterase enzyme or nucleoside transport protein, but it may result from increased palmitate transport across the plasma membrane.

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The modulating role played by red cells on platelet function is well known, yet its mechanism of action in the presence of antiaggregating agents is not clearly defined. We tried to assess the influence of aspirin (ASA) or dipyridamole (DIP) treated red cells on platelet aggregation in plasma, with the samples in static conditions and under flow in a perfusion system.

persantine dosing chart

The antagonist effects of 8-phenyltheophylline (8-PT) and caffeine against the actions of adenosine, (-)-N6-(R-phenyl-isopropyl)-adenosine (PIA), morphine and nalorphine on the guinea pig ileum preparation were examined. Antagonism of both adenosine and PIA by caffeine and 8-PT was concentration dependent. The slopes of Schild plots for both alkylxanthines vs. adenosine were significantly less than -1 unless the adenosine reuptake blocker dipyridamole (0.1 microM) was include in the tissue bath. Under these conditions, the 95% confidence intervals of the Schild plot slopes embraced theoretical unity, suggesting competitive antagonism. The antagonism of PIA by the alkylxanthine was also competitive. Dipyridamole had no effect on the potency of PIA. The pA2 value for caffeine-adenosine was not different from that for caffeine-PIA, and the pA2 values of 8-PT-adenosine and 8-PT-PIA were similar, suggesting that these two agonists interacted with similar receptors. The pA2 values using 8-PT were approximately 1.5-fold higher than those employing caffeine, suggesting higher affinity for 8-PT at these receptors. Caffeine significantly antagonized morphine at all concentrations used (0.5-1.0 mM), but only antagonized nalorphine at the two highest concentrations. After treating ilea with the mu-specific irreversible antagonist beta-FNA (beta-funaltrexamine) (resulting in a preparation with relatively pure kappa receptor population), the antagonist effect of caffeine against morphine was reduced such that only a concentration of 1 mM resulted in significant antagonism, while the effects of caffeine against nalorphine were unchanged. 8-PT did not antagonize morphine or nalorphine.(ABSTRACT TRUNCATED AT 250 WORDS)

persantine medication

Myocardial blood flow was evaluated in 31 subjects with not only visual but also, for the first time, circumferential profile analysis of rubidium 82 (82Rb) images acquired with positron emission tomography. Fifteen were control subjects and 16 subjects had significant coronary artery disease, defined as 50% or greater diameter stenosis in a major coronary artery or a first-order branch. Simultaneous 82Rb images at three myocardial levels were obtained before and after intravenous dipyridamole plus handgrip stress. In patients with significant coronary artery disease, visual analysis correctly identified significant disease in 26 (76%) of 34 arteries and its absence in 12 (86%) of 14 normal arteries. According to circumferential profile analysis, these numbers were 91% and 86%, respectively. Thus circumferential analysis of 82Rb images, obtained before and after intravenous dipyridamole plus handgrip stress, yielded improved sensitivity and comparable specificity compared with visual analysis.

persantine tablets

A visual improvement in anteroseptal and apical myocardial perfusion between stress and rest with Tc-99m MIBI in patients with LBBB probably indicates significant LAD stenosis. In our hands, quantitative software did not aid in the diagnosis. A well-designed, prospective study using a standardized stress protocol (probably dipyridamole or adenosine), which specifically evaluates visual reversibility in the anteroseptal wall and apex, will obviate the need for a Bonferroni correction, and could confirm these findings.

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The patients with perfusion abnormalities on ungated rest, ungated stress, or end-systolic stress images had significantly longer minimum QRS duration at rest. These QRS values correlated with SRS and SSS (r: 0.528, P: 0.01 and r: 0.47, P: 0.024, respectively). Analysis of perfusion and functional data demonstrated an inverse correlation between left ventricular ejection fraction (LVEF) and ESS (r: -0.671, P < 0.0001). The patients with end-systolic perfusion abnormalities had significantly lower LVEF rates when compared with the patients with normal perfusion on end-systolic images.

persantine dose calculation

We have induced the formation of arterial thrombosis in dogs by means of an intima lesion produced by continuous current. The platelets were labeled with 111-In-oxine. Groups of 7 mongrel dogs received treatment for 7 days prior to the trial: Group I, control; Group II, 5 mg/kg body weight/day acetylsalicylic acid; Group III, 20 mg/kg body wt/day acetylsalicylic acid; Group IV, 15 mg/kg body wt/day triflusal + 5 mg/kg body wt/day dipyridamole; Group V, 15 mg/kg body wt/day triflusal; and Group VI, 5 mg/kg body wt/day acetylsalicylic acid + 5 mg/kg body wt/day dipyridamole. The only effective treatment for arterial thrombosis prevention was that employed in Group II (p less than 0.05).

persantine drug classification

In November 1976, a 52 year old woman presented with a Moschowitz syndrome with clinical manifestations of continuous fever at 39 degrees and a transient Wernicke type aphasia. Laboratory findings included schizocytosis, a peripheral thrombocytopaenia and functional renal insufficiency. The ethanol tests was positive but there was no frank defibrination syndrome. After corticosteroid therapy failed, the patient was treated with Dipyridamole 400 mg/24 hours IV and acetylsalicylic acid 4 g/24 hours IV. Fever disappeared on the same day and the thrombocytopaenia was corrected in 48 hours. The patient was considered to be cured 15 days later. No precise aetiology to explain the Moschowitz syndrome was discovered apart from the recent ingestion of oestrogens. The authors emphasise the considerable progress which this use of a combination of Dipyridamole and aspirin represents, resulting in the cure of Moschowitz syndrome, a condition considered to be fatal up until a few years ago.

persantine drug class

Peripheral vascular complications are a significant source of morbidity after coronary artery stent implantation. The goal of this study was to assess the incidence, risk factors, and management of vascular complications after stent placement. The study population consisted of 101 consecutive patients who underwent stent placement for either elective or bailout indications. All patients received a standardized anticoagulation regimen of aspirin, dipyridamole, low molecular weight dextran, heparin, and warfarin. Peripheral vascular access sites were examined daily until hospital discharge. Vascular complications occurred in 16 of 101 (16%) patients, including femoral artery pseudoaneurysm (n = 11), hematoma requiring transfusion or surgery (n = 4), and arteriovenous fistula (n = 1). Intervention was required in 14 of 16 (88%) patients with complications. These included transfusion (n = 7), ultrasound-guided compression (n = 8), and/or vascular surgery (n = 7). Length of hospital stay was prolonged in patients with complications (14 +/- 9 vs. 8 +/- 5 d, P < 0.001). The development of peripheral vascular complications did not correlate with clinical or procedural variables such as age, cardiovascular risk factors, arterial sheath size, or elective vs. bailout indication. After the introduction of a pneumatic vascular compression device (FEMOSTOP, C.A. Bard, Billerica, MA), a significant reduction in vascular complications was observed. Complications occurred in only 1 of 41 (2.4%) patients in whom the compression device was used in contrast to 13 of 58 (22.4%) patients compressed manually (P < 0.01). Thus peripheral vascular complications are frequent after coronary artery stent placement and are associated with serious morbidity and prolongation of hospital stay. These complications are significantly reduced by the use of a pneumatic vascular compression device despite intensive systemic anticoagulation.

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To elucidate feasibility of the absolute myocardial blood flow (MBF), total coronary resistance (TCR), and myocardial blood flow reserve (MBFR) quantification using MRI in patients with coronary artery disease (CAD).

persantine dosage

Overall time savings and time savings stratified by operational ability (number of staff, number of SPECT cameras, hours of operation) translate to a more efficient utilization of laboratory resources when using regadenoson compared to adenosine and dipyridamole. Regadenoson is the most efficient pharmacologic stress agent compared to adenosine and dipyridamole.

persantine cost

A 30-year-old right-handed man was admitted for left facial paralysis and dysarthria. He had received oral isotretinoin 45 mg/day for 3 months for treatment of severe acne. A cerebral computed tomography scan showed hypodensity in the right middle cerebral territory corresponding to cerebral ischemia. The patient reported having experienced a similar episode 7 years before, after 3 months' treatment with oral isotretinoin. No risk factors were identified. Isotretinoin was discontinued on admission and the disorders resolved.

persantine medication classification

Nine pts, aged 4-20 years (mean 12) with chronic uremic anaemia (mean Hb 5.8 g/dl, range 5.0-7.0 g/dl) on regular thrice-weekly haemodialysis, were treated with human recombinant erythropoietin (rh-uEPO) for a mean of 28.11 weeks (range 4-48). To attain a target Hb concentration (9.6-11.2 g/dl) RH-uEPO (Cilag) was administered i.v. after each dialysis in increasing doses within the range (51-300 U/kg/week). All pts were treated with persantine. Five pts needed iron supplementation. All pts showed increased Hb concentration and none of 6 previously transfusion dependent pts needed further transfusions after the first week of rH-uEPO. Pretreatment long-term dialyzed, polytransfused and iron overloaded pts, even when treated with lower doses of rH-EPO, responded better, reaching target Hb level from the 8th- to the 16th week. Three of 4 highly sensitized pts on rH-EPO treatment had a significant decrease of cytotoxic antibody titre, and 2 were successfully transplanted. rH-EPO also significantly improved the life quality in all pts. No pts developed any serious side affects. There was a transient increase in BP (2 pts) and transaminase with eosinophilia (4 pts).

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Experimental studies have suggested that dipyridamole may inhibit red blood cell labelling with technetium-99m. To evaluate whether this effect is clinically relevant to the performance of radionuclide ventriculography after dipyridamole-thallium stress testing, in vitro red blood cell labelling was compared immediately before and after thallium-201 stress scintigraphy combined with either dipyridamole infusion (30 patients) or exercise stress (20 patients). Modified in vivo red blood cell labelling efficiency was assessed in a further 36 patients following dipyridamole infusion and was compared with that in 15 patients following exercise stress. The importance of a reversal of the dipyridamole effects by aminophylline was evaluated for in vitro and modified in vivo techniques. The red blood cell labelling efficiency was not significantly different in patients following dipyridamole compared with that obtained following exercise stress for both in vitro (93% +/- 4% versus 91% +/- 4%) and modified in vivo (87% +/- 19% versus 90% +/- 6%) techniques. Also, in vitro red blood cell labelling efficiency after dipyridamole was not different to that before stress testing (93% +/- 4% versus 92% +/- 4%). Reversal with aminophylline had no significant effect on the in vitro labelling efficiency with either the in vitro technique (94% +/- 3% with reversal versus 92% +/- 5% without) or the modified in vivo technique (91% +/- 4% with reversal versus 82% +/- 26% without). These results suggest that the red blood cell labelling efficiency is not compromised by the preceding dipyridamole-thallium stress testing but can be optimised by using in vitro labelling.

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The accuracy of dipyridamole sestamibi SPECT imaging in detecting multivessel disease was similar for men and women. The sensitivity of dipyridamole sestamibi SPECT imaging in detecting disease of the left anterior descending artery was better in women.

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Despite predictions that 201Tl imaging would be completely supplanted by the new 99mTc perfusion agents, thallium perfusion imaging is alive and well. In fact, in the past year, important new information on thallium imaging continued to emerge. Among the new data, the reinjection of a "booster" dose of 201Tl after the redistribution images has been heralded as a breakthrough that would equal positron-emission tomography in the prediction of myocardial viability. Pharmacologic coronary vasodilation has been increasingly popular, especially since the approval of intravenous dipyridamole by the Food and Drug Administration and in view of recent studies showing that adenosine is a very attractive alternative to dipyridamole in patients who cannot exercise. Beyond the undisputed diagnostic value of dipyridamole-thallium imaging, data on risk stratification continue to accumulate for patients receiving peripheral vascular surgeries as well as for those recovering from a myocardial infarction. The advent of single-photon emission CT in combination with 201Tl imaging allows improved quantification of jeopardized myocardium. This technique has now been used increasingly to complement the information obtained from coronary angiography by the determination of the functional significance of known coronary stenoses. Recent studies have shown marked heterogeneity in the extent of jeopardized myocardium in patients with coronary artery disease. Equally important have been recent reports on the high prevalence of silent ischemia in patients undergoing 201Tl exercise scintigraphy. Technical progress has also enhanced the diagnostic capability of 201Tl imaging, allowing sharper identification of perfusion defects and quantification of reversible myocardial ischemia precipitated by exertion. Finally, one of the most exciting areas of research in thallium scintigraphy is its established prognostic value in patients with stable angina or those recovering from a myocardial infarction. Recently, these prognostic data have also been extended to patients with unstable angina or those receiving thrombolytic therapy.

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A unique opportunity exists at the drug discovery stage to overcome inherently poor solubility by selecting drug candidates with superior supersaturation propensity. Existing supersaturation assays compare either precipitation-resistant or precipitation-inhibiting excipients, or higher-energy polymorphic forms, but not multiple compounds or multiple concentrations. Furthermore, these assays lack sufficient throughput and compound conservation necessary for implementation in the discovery environment. A microplate-based combination turbidity and supernatant concentration assay was therefore developed to determine the extent to which different compounds remain in solution as a function of applied concentration in biorelevant media over a specific period of time. Dimethyl sulfoxide stock solutions at multiple concentrations of four poorly soluble, weak base compounds (Dipyridamole, Ketoconazole, Albendazole, and Cinnarizine) were diluted with pH 6.5 buffer as well as FaSSIF. All samples were monitored for precipitation by turbidity at 600 nm over 1 h and the final supernatant concentrations were measured. The maximum supersaturation ratio was calculated from the supersaturation limit and the equilibrium solubility in each media. Compounds were rank-ordered by supersaturation ratio: Ketoconazole > Dipyridamole > Cinnarizine ∼ Albendazole. These in vitro results correlated well with oral AUC ratios from published in vivo pH effect studies, thereby confirming the validity of this approach.

persantine generic names

Platelet microparticles (PMP) are submicroscopic membrane vesicles released by platelets during activation. Flow cytometry is the most widely used method for quantifying PMP, but the optimization of the technical method has not yet been fully evaluated. This study was designed to assess the pre-analytical variables including blood sampling conditions, and to evaluate the analytical variations including effect of the platelet-specific antibodies and quantitative beads, precision, linearity and accuracy in comparison with beta-thromboglobulin, which is one of the platelet activation markers. Numbers of PMP collected into citrate-theophylline-adenosine-dipyridamole (CTAD) tubes were increased with time, but to a lesser extent than when collected into sodium citrate tubes. The precision of the PMP assay was relatively high. Excellent linear correlation was observed for dilution linearity. Regarding the platelet-specific antibodies used, anti-CD41a-labeled samples resulted in higher PMP levels than those labeled with anti-CD61 and anti-CD42a. There was no significant difference of PMP counts according to the quantitative beads. The PMP assay is well correlated with beta-thromboglobulin levels. Our findings suggest that blood samples for the PMP assay should be collected in a CTAD tube and delayed measurement is not allowed to avoid artefactual platelet activation. The PMP assay can be used successfully as a useful marker of the detection of in vivo platelet activation, provided that pre-analytical and technical points are optimally taken into consideration.

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persantine drug 2015-11-28

  We examined age-related alteration of SDPTG (study 1) and the SDPTG response to a vasodilator (study 2). The subjects in study 1 were 36 healthy children aged 0.9-16.0 years. The subjects in study 2 were 13 children aged 5.4-18.9 years with a history of Kawasaki disease. Subjects received an i.v. infusion of 0.568 mg/kg dipyridamole. We assessed the SDPTG by d/a ratio, b/ buy persantine online a ratio and aging index (AGI).

persantine brand name 2016-07-15

12 males with coronary artery disease (CAD) and CHF were compared with 12 controls with similar CAD but normal left ventricular (LV) function. MBF in non-infarct-related artery areas was assessed using [(13)N]ammonia positron emission tomography (PET), at rest and after dipyridamole infusion buy persantine online and 18FDG uptake was determined. DSE was performed with doses up to 40 microg/kg per min.

persantine medication 2016-11-05

The objective of this study was to determine if dual-tracer protocol using thallium-201 (201TI) chloride for rest and technetium-99m (99mTc)-sestamibi for stress images (TI-MIBI) detects ischemia better than single buy persantine online -tracer protocol using 99mTc-sestamibi for both rest and stress (MIBI) myocardial perfusion images.

persantine 25 mg 2015-08-09

Delayed restoration of coronary blood flow following successful PTCA is common and likely the result of multiple factors. Temporary myocardial ischemia and dipyridamole administration both result in increased coronary blood flow, but by different mechanisms. The relationship between these phenomena and exercise-induced ST-segment depression after PTCA was investigated to determine if any correlation buy persantine online existed.

persantine cost 2016-07-09

This was a retrospective, longitudinal pharmacoepidemiologic review. Adult patients receiving warfarin managed by a clinical pharmacy service who had documented antiplatelet (aspirin, clopidogrel, and/or dipyridamole) use (combination therapy cohort) or non-use (monotherapy cohort) were identified as of September 30, 2005. Utilizing integrated, electronic buy persantine online medical records, anticoagulation-related adverse events (death, hemorrhage, thrombosis) and coronary events were identified during a six-month follow-up (October 2005 through March 2006). Proportions of events were compared between cohorts. Independent associations between the cohorts and the outcomes were assessed with adjustment for potential confounding factors.

persantine generic 2017-12-29

The following patients with normal epicardial coronary arteries were compared: 30 subjects under 55 years of age (group 1) and 17 patients over 55 years (group 2). A complete TEE examination was carried out in all patients, and the following aortic elastic properties were calculated from aortic diameter and blood pressure data: aortic elastic modulus [E(p)] and Young's circumferential static elastic modulus [E(s)]. Doppler evaluation of left anterior descending coronary flow velocity was performed in resting conditions and after administration of 0.56 mg/Kg dipyridamole over 4 min. Peak buy persantine online coronary flow velocities were measured at the 6th minute at maximum vasodilation. CFR was estimated as the ratio of hyperemic to basal peak diastolic coronary flow velocities.

persantine dosage chart 2015-07-07

Calcific aortic valve disease is an active and progressive condition. Data indicate that aortic valve calcification (AVC) is associated with buy persantine online endothelial dysfunction and accepted as a manifestation of atherosclerosis. Coronary flow reserve (CFR) determined by transthoracic echocardiography has been introduced as a reliable indicator for coronary microvascular function. In this study we aimed to evaluate CFR in patients with AVC.

persantine 50 mg 2015-02-09

Whole blood samples from 20 post stroke AR patients were pretreated with dipyridamole, simulating the therapeutic range, and then incubated for 45 min at 37 degrees C. Platelet characteristics were buy persantine online assessed by aggregometry, cartridge-based analyzer, and receptor expression by flow cytometry. Markers of thrombin generation were measured in the autologous plasma by ELISA.

persantine oral dose 2015-04-21

In the absence of significant coronary stenoses, stress-induced myocardial perfusion abnormalities at gated single photon emission computed tomography (g-SPECT) are usually considered to be a 'false-positive' result. Our goal buy persantine online was to investigate how false-positive g-SPECT perfusion abnormalities relate to cardiovascular risk factors and whether they provide any prognostic information.

cost of persantine 2017-12-05

Theophylline, caffeine, isobutylmethylxanthine, papaverine, N6-cyclohexyladenosine, N6-allyl-N6-cyclohexyladenosine ( ACHA ) and N6-L-phenylisopropyladenosine (L-PIA) inhibited the transport of adenosine, uridine and hypoxanthine in Novikoff rat hepatoma cells. The IC50 values for the inhibition of uridine transport ranged from 5 microM for ACHA to 3200 microM for caffeine and were inversely proportional to the lipid solubility of the inhibitors. L-PIA and papaverine inhibited uridine influx in a non-competitive manner, having a greater influence on the Michaelis-Menten constant than on maximum velocity, just as observed previously for the inhibition of nucleoside transport by dipyridamole and hypoxanthine. [3H]L-PIA rapidly accumulated in Novikoff cells at 25 degrees to about five times higher levels than present extracellularly. The initial buy persantine online rates of L-PIA uptake were directly proportional to its extracellular concentration between 0.01 and 240 microM and not affected by structurally related analogs, methylxanthines, papaverine, dipyridamole, or 2 mM uridine, but were dependent on temperature. We conclude that L-PIA inhibits nucleoside transport in these cells without being significantly transported by the carrier, that it equilibrates rapidly across the plasma membrane without carrier mediation consistent with its lipophilicity, and that it accumulates concentratively in cells due to partitioning into membrane lipids and binding to intracellular components.

persantine dosage 2017-09-08

More than half of 33 children with HUS buy persantine online were less than a year old, 90% less than five. A constant laboratory finding was the presence of FDP in the blood and urine, and of the remaining tests the presence of erythrocyte fragments. The absence of thrombocytopenia does not eliminate HUS. Antiplatelet treatment was given to 94% of children, heparin to 94%, thrombolysis to 27% Precise evaluation of treatment would require a controlled prospective multicentre study.

persantine dosing chart 2017-09-01

Quantitative sphygmometry was used to check the cardiovascular action of an intravenous injection of 30 mg of dipyridamole in ten women, between the 31st and 38th weeks of pregnancy. Circulation was intact in all of them, but there was suspicion of intra-uterine foetal retardation. Moderate decline in arterial mean blood pressure was buy persantine online paralleled over a short period of time by increase in heart rate, stroke volume, and cardiac output. Overall peripheral resistance dropped with significance and caused, with some probability, increase in uterine perfusion. Hence, dipyridamole proved suitable for intra-uterine reanimation.

persantine drugs 2015-05-12

The aim of this study was to apply the findings of the European Stroke Prevention Study 2 (ESPS-2) to a paper that quantified and described the annual cost of ischaemic stroke in New Zealand, and to compare the cost of alternative drug regimens in the secondary prevention of ischaemic stroke. Comparisons were made between the costs of low-dosage aspirin (acetylsalicylic acid) monotherapy and a combination buy persantine online of modified-release dipyridamole and low-dosage aspirin. Differences in undiscounted costs were calculated over a 2-year period. The New Zealand cost per stroke event was multiplied by the ESPS-2 incremental reduction in stroke events to derive the cost of strokes avoided. As the focus of the paper was on direct medical costs, the primary perspective adopted was that of a healthcare provider or funder, but a societal perspective was also considered by evaluation of direct nonmedical and indirect costs. Compared with aspirin monotherapy, combination therapy generated incremental net direct costs of 18.22 New Zealand dollars ($NZ) per patient or $NZ18,223 per 1000 patients. However, individually, each treatment regimen resulted in direct cost savings when compared with placebo: combination therapy $NZ905.16 per patient; aspirin monotherapy $NZ923.39 per patient (a difference between the 2 regimens of $NZ18.22 per patient). Total direct and indirect incremental cost savings were $NZ40.96 per patient, and $NZ40,963 per 1000 patients, for the combination therapy. The analysis demonstrates that changing patients from low-dosage aspirin to a combination therapy of modified-release dipyridamole plus low-dosage aspirin would result in a small rise in incremental direct costs (using our conservative assumptions relating to hospital and continuing institutional care costs). If less conservative unit cost assumptions were adopted, a more likely outcome would be a saving in direct incremental costs of up to $NZ400 per patient treated.

persantine generic name 2016-07-09

Luminol-enhanced chemiluminescence was used to determine the effects of diethyldithiocarbamate, dipyridamole, catechin and verapamil on the generation of reactive oxygen species in human leukocytes, and on superoxide generated by chemiluminescence of the hypoxanthine xanthine-oxidase reaction. These agents reduced the luminol enhanced chemiluminescence response of activated leukocytes, most probably by inhibiting the superoxide generation reaction. On the other hand, citrate and diethylcarbamazine, produced a slight increase of the luminol enhanced chemiluminescence buy persantine online of leukocytes.

persantine overdose 2017-04-15

Diagnostic accuracy of high dose dipyridamole stress echocardiography (0.84 mg i.v./kg) for detecting coronary artery stenosis was assessed in 94 patients undergoing coronary angiography, and adverse effects were registered in the total study population of 120 patients. Echocardiographic analysis was performed with digital systolic cineloops with high frame-rate (47 frames/sec) for optimal left ventricular wall motion display. Results showed sensitivity of 73% for detection of arterial luminal stenosis > or = 75% or retrograde collateral flow to an occluded coronary Geodon 80mg Capsules artery. Sensitivity for detection of 1-vessel stenosis was 43% (6 of 14 patients), and for 2- and 3-vessel disease 79% (19 of 24) and 88% (16 of 18), respectively. Specificity was 92% (35 of 38), diagnostic accuracy 81%. The stenosed coronary artery was correctly localized in 85% of positive tests. Dipyridamole-induced increase in wall motion score index differed significantly between patients with 1-, 2-, and 3-vessel disease (0.02 +/- 0.17, 0.15 +/- 0.17, and 0.27 +/- 0.24, respectively), and early positive tests (dipyridamole dose of 0.56 mg/kg) were almost exclusively seen in patients with multivessel disease. Six patients (5%) developed symptomatic bradycardia and hypotension during the test. In conclusion, dipyridamole stress echocardiography is useful for detection and localization of coronary artery stenosis, particularly in patients with multivessel disease.

persantine drug classification 2015-02-13

Breath-hold velocity-encoded cine MR Amalaki Juice Buy imaging provided reproducible assessment of coronary flow reserve in humans.

persantine 75 mg 2016-03-08

Between 1987 and 1989 we studied 3,193 patients. After exclusion of patients with unstable angina, myocardial infarction during the previous month or earlier revascularization, 1,926 patients were followed up for 33 +/- 10 (mean +/- SD) months after stress thallium SPECT imaging (performed after exercise in 1,121 patients or during dipyridamole Lopid Overdose infusion in 805 patients). Thallium SPECT imaging of the left ventricle was divided into six segments.

persantine generic names 2015-12-26

BACKGROUND: To investigate the effects of dipyridamole, a drug with phosphodiesterase-, adenosine reuptake-inhibiting, and prostacyclin-stimulating activity on the biological actions of nitric oxide, 30 norepinephrine-precontracted subcutaneous arterioles were prepared from specimens removed during surgery. METHODS AND RESULTS: Specimens were mounted on a myograph and relaxes through either acetylcholine, a muscarinic agonist that stimulates endothelial nitric oxide production, or sodium nitroprusside, an endothelium-independent vasodilator. Studies were performed under control conditions and after dipyridamole which potentiated in a concentration-dependent manner the vasorelaxation induced both by acetylcholine and sodium nitroprusside, indicating an endothelium-independent mechanism of action. The contribution of nitric oxide to the relaxation produced by acetylcholine was confirmed by N-monomethyl-L-arginine, a nitric oxide synthase inhibitor. In contrast, indomethacin, a cyclo-oxygenase inhibitor, was ineffective, indicating that prostacyclin stimulation could not explain the effect of dipyridamole. Urispas Drug Uses CGS 21680 C, an A(2)-selective adenosine receptor agonist insensitive to tissue deaminase, did not influence the relaxations induced by acetylcholine, suggesting that interference with adenosine metabolism was not implicated in the potentiating action of dipyridamole. CONCLUSIONS: Dipyridamole potentiated the vasorelaxing effect of acetylcholine and sodium nitroprusside in human subcutaneous arterioles; neither prostacyclin stimulation nor A(2) adenosine receptor stimulation could explain this effect. The data are consistent with an increase in intracellular cyclic 3' 5'-guanosine monophosphate levels secondary to the phosphodiesterase-inhibiting properties of the drug.

persantine dose 2016-10-26

Platelets were suggested to play a specific role in the haematogenous spread of experimental tumours. To test this hypothesis mice were treated with various inhibitors or platelet function (acetyl-salicylic acid, RA 233, bencyclan-, cyproheptadine). The effect of treatment on the development of lung colonies after i.v. tumour cell injection as well as on the formation of spontaneous metastases Detrol Drug Interactions from the solid Lewis-lung carcinoma was evaluated. A significant increase of lung colonies after pretreatment with the platelet aggregation inhibitors was found. The effect of long term treatment on spontaneous metastasis formation gave equivocal results. The present investigations do not support the importance of the integrity of platelet function as a prerequisite for metastasis formation.

persantine dose calculation 2015-05-23

At 365 days, the re-prescription rate was 43 % for ASA, 66 % for warfarin, 69 % for clopidogrel, and 49 % for dipyridamole. The re-prescription rate of gastroprotective agents at 365 days for current users of histamine H2-receptor antagonists was 36 % and that of proton pump inhibitors (PPIs) was 97 %. In patients who were prescribed ASA before UGIB (n = 572), only 24 % were Cialis Online Pharmacy prescribed a PPI in the previous year. In patients who were prescribed ASA in the year after UGIB (n = 337), 92 % were prescribed a PPI.

persantine and alcohol 2016-09-12

Although noninvasive pharmacologic stress tests are widely used, their relative performance is not clear. We compared the performance of pharmacologic stress tests combined with echocardiography or nuclear imaging for the diagnosis of coronary disease Cymbalta 120mg Dosage .