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Hemodynamic Comparison of Combined Therapy by Nitroglycerin Tape and Ibopamine with Combination of Nitroglycerin Tape and Nifedipine
K. Taniguchi a , T. Tsujibayashi b , H. Itoh c
12 November 2008
Heart failure, Nitroglycerin, Combined therapy, Ibopamine, Nifedipine
Abstract
Fifteen congestive heart failure patients (NYHA: class III or IV) were enrolled in the study and were classified into two groups. Six patients (group I) received combined therapy by nitroglycerin tape (5 mg) and ibopamine (100 mg), while the remaining 9 patients (group II) were given nitroglycerin tape (5 mg) and nifedipine (10 mg). The effects of the combined treatments on hemodynamics were compared between the two groups using Swan-Ganz catheter method. No significant differences were noted in the hemodynamic baseline values of the two groups before treatment. In group I mean pulmonary arterial pressure (mPA) and systemic vascular resistance (SVR) decreased and the cardiac index (CI) increased, while the heart rate (HR) and mean blood pressure (mBP) remained unchanged. In group II mBP, mPA and SVR were lowered, whereas CI and HR were augmented. There were no significant differences between the two groups with respect to mPA and CI. However, mBP decreased in group II, while it remained unchanged in group I, with significant difference between the two groups (p < O.01). Preload and afterload, on the base of mPA and SVR, respectively, decreased in both groups, while cardiac output increased, suggesting that both treatments were useful for the improvement of cardiac output. Mean BP decreased in group II, although it remained unchanged in group I. These results suggest that the combination of nitroglycerin and ibopamine may be more useful in hypotensive patients with heart failure.
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