Abstract:
:The cardiovascular profile of SC-36602, a new class 1A/1B antiarrhythmic agent, was compared to those of disopyramide, lidocaine, mexiletine, flecainide, encainide, lorcainide, and quinidine. These drugs were compared at their respective canine antiarrhythmic doses in a hemodynamic evaluation using anesthetized dogs. In another test using anesthetized dogs, the cardiovascular effects of cumulative doses of SC-36602 were assessed. The direct negative inotropic potential of each drug was also determined using isolated cat papillary muscles. In the hemodynamic study, SC-36602 and quinidine did not cause significant myocardial depression, measured as a decrease in the maximal first derivative of the left ventricular pressure. (Heart rate and diastolic filling pressure were not controlled in order to mimic clinical conditions). SC-36602, mexiletine, flecainide, and quinidine increased heart rate. SC-36602 and mexiletine caused a small increase in mean arterial pressure, whereas disopyramide and quinidine decreased it. Disopyramide was the only drug studied that increased left ventricular end-diastolic pressure. SC-36602, quinidine, and mexiletine increased index of cardiac effort. Disopyramide caused a decrease in the latter. Disopyramide, flecainide, encainide, and lorcainide lengthened the ECG intervals. Cumulative intravenous doses of SC-36602 up to 50 mg/kg produced significant decreases in mean arterial pressure, increases in heart rate, and increases in P-R and QRS intervals of the ECG relative to placebo-matched controls. SC-36602 had the least direct negative inotropic action of the drugs studied, as measured in isolated papillary muscles. These data suggest SC-36602, when compared to the other antiarrhythmic drugs studied, has the least amount of hemodynamic side-effects at its antiarrhythmic dose.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Frederick LG,Hatley FR,McDonald SJ,Stamm MH,Garthwaite SMsubject
Has Abstractpub_date
1988-06-01 00:00:00pages
657-66issue
6eissn
0160-2446issn
1533-4023journal_volume
11pub_type
杂志文章abstract::The serotonin-2 receptor antagonist ketanserin has been suggested to diminish arteriosclerotic development by its effect on platelet function and on vascular smooth muscle cells. We investigated the ability of ketanserin in reducing immune-mediated arteriosclerosis using the BN-WAG and WAG-BN rat aortic transplantatio...
journal_title:Journal of cardiovascular pharmacology
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doi:10.1097/00005344-199603000-00001
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journal_title:Journal of cardiovascular pharmacology
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journal_title:Journal of cardiovascular pharmacology
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journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
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更新日期:1986-01-01 00:00:00
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journal_title:Journal of cardiovascular pharmacology
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journal_title:Journal of cardiovascular pharmacology
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journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
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journal_title:Journal of cardiovascular pharmacology
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更新日期:2008-09-01 00:00:00
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journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199201000-00019
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journal_title:Journal of cardiovascular pharmacology
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更新日期:1982-11-01 00:00:00
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journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
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更新日期:2000-03-01 00:00:00
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journal_title:Journal of cardiovascular pharmacology
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journal_title:Journal of cardiovascular pharmacology
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journal_title:Journal of cardiovascular pharmacology
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