A noninvasive method for estimating cardiac output using lung to finger circulation time of oxygen.
To develop a safe, noninvasive, simple, inexpensive, and clinically adaptable method for estimating cardiac output, we evaluated the potential of lung to finger circulation time (LFCT) and buildup time (Tb) of oxygen as measured by pulse oximetry to estimate cardiac output. Significant correlation was found between cardiac output as measured by thermodilution and the inverse of LFCT (R = 0.76, p < 0.001, SEE = 0.9 L/min) as well as the inverse of Tb (R = 0.72, p < 0.001, SEE = 0.9 L/min).
Section of Cardiology, Penn State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033-0850, USA.
B
B
Kasravi
J P
JP
Boehmer
U A
UA
Leuenberger
D006328:Cardiac Catheterization; D002302:Cardiac Output; D005260:Female; D006331:Heart Diseases / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010092:Oximetry; D010100:Oxygen / Q000097:blood*; D011446:Prospective Studies; D013815:Thermodilution
D010100:Oxygen