Left ventricular filling: relationship with arterial blood pressure, left ventricular mass, age, heart rate and body build

1991 ◽  
Vol 9 (4) ◽  
pp. 345-353 ◽  
Author(s):  
Alberto Genovesi-Ebert ◽  
Claudio Marabotti ◽  
Carlo Palombo ◽  
Stefano Giaconi ◽  
Sergio Ghione
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Left Ventricular Mass ◽  
Arterial Blood Pressure ◽  
Left Ventricular ◽  
Left Ventricular Filling ◽  
Body Build ◽  
Arterial Blood ◽  
Ventricular Mass ◽  
Ventricular Filling

Effects of isoproterenol on the cardiovascular system of fetal sheep exposed to long-term high-altitude hypoxemia

1995 ◽  
Vol 78 (5) ◽  
pp. 1793-1799 ◽  
Author(s):  
M. Kamitomo ◽  
T. Ohtsuka ◽  
R. D. Gilbert
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Cardiac Output ◽  
Right Ventricular ◽  
High Altitude ◽  
Arterial Blood Pressure ◽  
Left Ventricular ◽  
Arterial Blood ◽  
Isoproterenol Infusion

We exposed fetuses to high-altitude (3,820 m) hypoxemia from 30 to 130 days gestation, when we measured fetal heart rate, right and left ventricular outputs with electromagnetic flow probes, and arterial blood pressure during an isoproterenol dose-response infusion. We also measured the distribution of cardiac output with radiolabeled microspheres during the maximal isoproterenol dose. Baseline fetal arterial blood pressure was higher in long-term hypoxemic fetuses (50.1 +/- 1.3 vs. 43.4 +/- 1.0 mmHg) but fell during the isoproterenol infusion to 41.3 +/- 1.4 and 37.5 +/- 1.4 mmHg, respectively, at the highest dose. Heart rate was the same in both groups and did not differ during isoproterenol infusion. Baseline fetal cardiac output was lower in the hypoxemic group (339 +/- 18 vs. 436 +/- 19 ml.min-1.kg-1) due mainly to a reduction in right ventricular output. During the isoproterenol infusion, right ventricular output increased to the same extent in both hypoxemic and normoxic fetuses (approximately 35%); however, left ventricular output increased only approximately 15% in the hypoxemic group compared with approximately 40% in the normoxic group. The percent change in individual organ blood flows during isoproterenol infusion in the hypoxemic groups was not significantly different from the normoxic group. All of the mechanisms that might be responsible for the differential response of the fetal left and right ventricles to long-term hypoxia are not understood and need further exploration.

Effects of Nifedipine-GITS on Left Ventricular Mass and Left Ventricular Filling

1992 ◽  
Vol 19 (Supplement 2) ◽  
pp. S28-S34 ◽  
Author(s):  
Robert A. Phillips ◽  
Maria Ardeljan ◽  
Seiichi Shimabukuro ◽  
Martin E. Goldman ◽  
David L. Garbowit ◽  
...  
Keyword(s):  
Left Ventricular Mass ◽  
Left Ventricular ◽  
Left Ventricular Filling ◽  
Ventricular Mass ◽  
Ventricular Filling
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