Article

Carbon dioxide rebreathing is widely used as a noninvasive technique for the determination of cardiac output (Q), stroke volume (SV) and arteriovenous oxygen difference (A-VO2). This paper provides a review of the studies concerned with the development of the two most commonly used methods, the equilibrium method, and the exponential method. The reliability and validity of both methods have been found, in most investigations, to be very good during exercise. Some authors report acceptable levels of reliability and validity at rest as well. A comparison of the two methods indicates differences in the applicability of each. Various procedures that have been employed in the implementation of the technique by different investigators are reviewed with regard to their potential to produce valid and reliable measures of Q and associated parameters. Particular attention is given to the equilibrium method and to the various investigations that have established procedures for its use. This review provides the background for the development of CO2 rebreathing methods and recommendations concerning implementation of the technique.

Langue : ANGLAIS

Identifiant basis : 1985101580