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Hepatic Impairment: Compared to healthy subjects, patients with cirrhotic liver disease exhibit significantly higher concentrations of carvedilol (approximately 4-to 7-fold) following single-dose therapy. Renal Insufficiency: Text Continues Below
Although carvedilol is metabolized primarily by the liver, plasma concentrations of carvedilol have been reported to be increased in patients with renal impairment. Based on mean AUC data, approximately 40% to 50% higher plasma concentrations of carvedilol were observed in hypertensive patients with moderate to severe renal impairment compared to a control group of hypertensive patients with normal renal function. However, the ranges of AUC values were similar for both groups. Changes in mean peak plasma levels were less pronounced, approximately 12% to 26% higher in patients with impaired renal function. Consistent with its high degree of plasma protein-binding, carvedilol does not appear to be cleared significantly by hemodialysis. Pharmacodynamics: Congestive Heart Failure: The basis for the beneficial effects of COREG in congestive heart failure is not established. Two placebo-controlled studies compared the acute hemodynamic effects of COREG to baseline measurements in 59 and 49 patients with NYHA class II-IV heart failure receiving diuretics, ACE inhibitors, and digitalis. There were significant reductions in systemic blood pressure, pulmonary artery pressure, pulmonary capillary wedge pressure, and heart rate. Initial effects on cardiac output, stroke volume index, and systemic vascular resistance were small and variable. These studies measured hemodynamic effects again at 12 to 14 weeks. COREG significantly reduced systemic blood pressure, pulmonary artery pressure, right atrial pressure, systemic vascular resistance, and heart rate, while stroke volume index was increased. Page: << Prev | 1 | 2 | 3 | 4 | 5 | Next >>
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