Comparative radionuclide and thermodilution determinations of cardiac output and stroke volume in the baboon (Papio ursinus).
Thermodilution cardiac output determinations and multigated equilibrium blood-pool scintigraphy were performed in ten healthy chacma baboons (Papio ursinus). The correlation was moderately good between both the radionuclide and thermodilution stroke volume (r = 0.58, SEE = 3 ml; SVth = 0.78SVr + 15.6 ml) as well as the cardiac output (r = 0.72, SEE = 0.2 liter/min; COth = 0.56 Cor + 2.1 liter/min). The attenuation depth dr as determined by radionuclide techniques was found to correlate well with the radiologically determined values dx (r = 0.8, SEE = 0.4 cm; dx = 0.87dr + 0.72 cm) which validated the depth values used in the calculations.
D000818:Animals; D002302:Cardiac Output; D004912:Erythrocytes; D006321:Heart / Q000000981:diagnostic imaging*; D008297:Male; D010215:Papio / Q000502:physiology*; D011877:Radionuclide Imaging; D013318:Stroke Volume; D013667:Technetium; D013815:Thermodilution
D013667:Technetium