Different effects of acute intravenous administration of k-strophantidin and prenalterol on the diastolic phase of left ventricular function in patients with coronary arterial disease
| Autor: | Carlo Manca, Roberto Bolognesi, Patrizia Giaroli, Francesco Cucchini |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Adult
Male Inotrope medicine.medical_specialty Systole medicine.medical_treatment Diastole Coronary Disease Strophanthidin Ventricular Function Left Internal medicine Heart rate medicine Humans Infusions Intravenous Cardiac catheterization Diminution Prenalterol Ejection fraction business.industry Middle Aged Anesthesia Cardiology Ventricular pressure Cardiology and Cardiovascular Medicine business medicine.drug |
| Zdroj: | International Journal of Cardiology. 32:29-34 |
| ISSN: | 0167-5273 |
| DOI: | 10.1016/0167-5273(91)90041-m |
| Popis: | In 21 patients with coronary arterial disease, and with maintained (or mildly depressed) systolic function, we studied the effects of two well-known inotropic agents, namely prenalterol and k-strophanthidin, on the diastolic phase. Selected variables of both systolic and diastolic function were assessed at controlled heart rate by cardiac catheterization and left ventriculography before and after acute intravenous administration of the beta 1 agonist prenalterol (35 micrograms/kg for 3 min) and of k-strophanthidin (0.008 mg/kg for 5-10 min). Ten patients received prenalterol, and 11 patients were injected with k-strophanthidin. Administration of prenalterol induced a remarkable diminution of end-systolic volume index (mean values from 41.8 +/- 11.9 to 32.2 +/- 10.4), while k-strophanthidin showed only a tendency towards a decrease (mean values from 43.4 +/- 13.2 to 40.7 +/- 15.1). After k-strophanthidin, we did not observe any significant changes in the peaks of maximal rate in volumetric increase during filling phase whereas, after prenalterol, a noteworthy increase of the first peak was accompanied by a significant decrease of the second peak. The lowest and end filling left ventricular pressures were decreased by prenalterol (mean values from -0.8 +/- 0.1 to -2 +/- 0.5 and from 10.6 +/- 4.6 to 4.1 +/- 1.1 respectively), whereas k-strophanthidin increased left ventricular end diastolic pressure (mean values from 11.6 +/- 4.3 to 17.1 +/- 9.1). Prenalterol induced a relevant increase of ejection fraction (mean values from 0.52 +/- 0.1 to 0.61 +/- 0.008), whereas k-strophanthidin produced only a nearly significant (P less than 0.06) mild increase (mean values from 0.51 +/- 0.06 to 0.54 +/- 0.09).(ABSTRACT TRUNCATED AT 250 WORDS) |
| Databáze: | OpenAIRE |
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