title: 5-HT2-receptor blockade in the treatment of heart failure. A preliminary study.
abstract: Ketanserin (R 41 468), a quinazoline derivative, has been shown to be a selective blocker of 5-HT2 receptors. The drug was administered intravenously (10 mg given over a 3 min period) to 8 patients with severe cardiac failure already treated with digitalis, diuretics, and, in 4 cases, vasodilators. R 41 468 produced a significant fall in right-atrial, pulmonary-artery, pulmonary-wedge, and systemic arterial pressures. Systemic dynamic and total pulmonary vascular resistances were also reduced. Cardiac and stroke-work indices both increased, Heart rate remained unchanged. The platelet aggregation index, assessed in 2 patients, was initially low and was nearly normal 15 min after administration of a single dose of R 41 468.
mesh_terms: D000328:Adult; D000368:Aged; D001794:Blood Pressure / Q000187:drug effects; D002302:Cardiac Output / Q000187:drug effects; D006333:Heart Failure / Q000188:drug therapy*; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D007650:Ketanserin; D008297:Male; D008875:Middle Aged; D010880:Piperidines / Q000494:pharmacology / Q000627:therapeutic use*; D010974:Platelet Aggregation / Q000187:drug effects; D011669:Pulmonary Wedge Pressure / Q000187:drug effects; D012702:Serotonin Antagonists / Q000494:pharmacology / Q000627:therapeutic use*; D013318:Stroke Volume / Q000187:drug effects; D014655:Vascular Resistance / Q000187:drug effects; D014661:Vasoconstriction / Q000187:drug effects
chemical_list: D010880:Piperidines; D012702:Serotonin Antagonists; D007650:Ketanserin