Regulation of cardiac output by stroke volume and heart rate in conscious dogs.

Regulation of cardiac output by stroke volume and heart rate in conscious dogs.

recoiling forces of excised cat lungs. J Appl Physiol 14: 905-908, 1959 35. 30. Hauge A, Bo G, Waaler BA: Interrelations between pulmonary liquid volumes and lung compliance. J Appl Physiol 38: 608-614, 1975 31. Lenfant C, Howell BJ: Cardiovascular adjustments in dogs during 36. continuous pressure breathing. J Appl Physiol 14: 425-428, 1960 32. Staub NC, Nagano H, Pearce ML: Pulmonary edema in...

Regulation of cardiac output through stroke volume.

A differentiable, periodic function for pulsatile cardiac output based on heart rate and stroke volume.

Many mathematical models of human hemodynamics, particularly those which describe pressure and flow pulses throughout the circulatory system, require as specified input a modeling function which describes cardiac output in terms of volume per unit time. To be realistic, this cardiac output function should capture, to the greatest extent possible, all relevant features observed in measured physi...

Heart stroke volume and cardiac output by four-dimensional ultrasound in normal fetuses.

OBJECTIVE To establish reference intervals for fetal heart stroke volume and cardiac output with gestation. METHODS Fetal heart ventricular volumes were measured using the four-dimensional (4D) spatiotemporal imaging correlation (STIC) ultrasound technique in 140 normal singleton pregnancies at 12-34 weeks' gestation. The Virtual Organ Computer-aided AnaLysis (VOCAL) technique was used to obt...

Adrenocorticotropic Hormone Secretion and Heart Rate in Conscious Dogs

The present studies were designed to examine the effect of angiotensin II on baroreflex control of adrenocorticotropic hormone secretion and heart rate in conscious dogs. Baroreflex function was assessed by examining the relationship between blood pressure and plasma corticosteroid concentration (used as an index of adrenocorticotropic hormone secretion) and between blood pressure and pulse int...