Results 241 to 250 of about 356,411 (312)
Development and validation of a nomogram model for predicting in-hospital cardiac arrest risk: A prospective multi-center observational study. [PDF]
Medicine (Baltimore)Saimaiti X +6 more
europepmc +1 more source
Canadian Journal of Physiology and Pharmacology, 1992 To assess the degree of circulatory fullness and to evaluate the influence of peripheral and cardiac factors in the regulation of cardiac output during pregnancy, the following studies were conducted using pentobarbital-anesthetized, open-chest nonpregnant and late term pregnant guinea pigs.
S. C. +3 more
openalex +3 more sources
Noninvasive Measurement of Cardiac Function during Exercise, Using Resaturation Curves
Chest, 1976 The resaturation curve, a noninvasive indicator-dilution test using an ear oximeter to detect rates of change in arterial oxygen saturation during breathing of various concentrations of oxygen, was used to assess cardiac performance in normal subjects and in 108 patients with cardiac valvular disease. Measurements made during exercise included the time
L.S. Goodenday +3 more
openalex +3 more sources
Annals of Nuclear Medicine, 2010 Echocardiographic studies have suggested an association between diastolic dysfunction and exercise intolerance. The aim of this study was to examine the relationship between exercise capacity and left ventricular (LV) function during stress myocardial scintigraphy, and to investigate whether or not this relationship is caused by ischemia during ...
Tomohide Yoshino +4 more
openalex +3 more sources
Changes in canine cardiac function and venous return curves by the carotid baroreflex
American Journal of Physiology-Heart and Circulatory Physiology, 1986 Venous return curves and cardiac function relationships were simultaneously determined in 10 pentobarbital-anesthetized dogs at three different isolated carotid sinus pressures. Changing carotid sinus pressure (CSP) between 50 and 200 mmHg produced large changes in the zero flow intercept of the venous return curves from 15.37 +/- 0.97 to 11.94 +/- 1 ...
Andrew S. Greene, Artin A. Shoukas
openalex +3 more sources
MR imaging of regional cardiac function: Low‐pass filtering of wall thickness curves
Magnetic Resonance in Medicine, 1995 AbstractWall thickness curves (WTCs) derived from MR images are subject to considerable measurement error. This study determines the effects of low‐pass Fourier filtering of WTCs on functional parameters derived from the curve: peak rate of wall thinning (PRWT) and time to PRWT (TPRWT).
Hildo J. Lamb +4 more
openalex +3 more sources
Proceedings. Computers in Cardiology 1988, 2003 Typically a diagnostic algorithm based on a cardiac-function test uses a threshold on a parameter to separate normal from diseased patients. This threshold may be determined through discriminant analysis or through a fixed choice of sensitivity or specificity.
Gregory Campbell +2 more
openalex +2 more sources
Cardiac function curves in conscious dogs
American Journal of Physiology-Legacy Content, 1964 Repeated ventricular function curves were determined over a period of several weeks in seven conscious dogs. The atrial pressures were raised by infusing Tyrode's solution through a large catheter chronically implanted in the left jugular vein while recording systemic arterial pressure, right and left atrial pressures, heart rate, and ventricular ...
V. S. Bishop, H. L. Stone, A C Guyton
openalex +3 more sources