PMID: 1198057Oct 1, 1975Paper

Temperature of mixed venous blood during exercise

Scandinavian Journal of Clinical and Laboratory Investigation
T Brundin

Abstract

The temperature of mixed venous blood (PA-temp) was measured in the pulmonary artery of healthy male volunteers at rest and during bicycle exercise in the supine position. Oxygen uptake, arteriovenous oxygen difference, and heart rate were determined simultaneously. The subjects were studied both in their basal normokinetic circulatory state and in a hypokinetic circulatory state induced by beta-receptor blockade with propranolol. The PA-temp increased linearly with rising oxygen uptake. During beta-receptor blockade the exercise-induced rise in PA-temp was considerably steeper in relation to work load and to oxygen uptake. Thus when the ordinary ability to increase cardiac output was suppressed by propranolol, an identical dynamic exercise induced a significantly higher PA-temp. A significant correlation (r = 0.92) was found between the rise in PA-temp during exercise and the increase in the arteriovenous oxygen difference. This correlation, which has not been described previously, was not altered by beta-receptor blockade. It is concluded that the close correlation between blood temperature and arteriovenous oxygen difference has a clinical potential for hemodynamic measurements. A simple method for the indirect estimation of...Continue Reading

Citations

Dec 6, 1976·European Journal of Applied Physiology and Occupational Physiology·A Kilbom, T Brundin
Jan 1, 1988·Journal of the American College of Cardiology·P A McElroyK T Weber
Oct 1, 1994·Pacing and Clinical Electrophysiology : PACE·I SingerM Stoddard
Dec 1, 1984·IEEE Transactions on Bio-medical Engineering·L A GeddesH J Smith
Sep 1, 1986·Progress in Cardiovascular Diseases·N E FearnotL A Geddes
Oct 1, 1990·Circulation·S Furman
Nov 1, 1986·Pacing and Clinical Electrophysiology : PACE·R G BakerR V Calfee
May 1, 1978·Scandinavian Journal of Clinical and Laboratory Investigation·T Brundin
Sep 8, 2019·European Journal of Applied Physiology·Kathryn H MelamedDavid M Systrom

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