Significance of cardiogenic mixing in dog lungs.
Single-breath washout of two inert gases (He and SF6) in anesthetized mechanically ventilated dogs in normal conditions with the heart beating and during reversible heart arrest revealed no effects attributable to the action of the beating heart. It is concluded that in the conditions of the experiments convective mixing by the cardiac action played an insignificant role in promoting intrapulmonary mixing and transport.
Schell
J M
JM
Department of Physiology, Max Planck Institute for Experimental Medicine, Göttingen, Federal Republic of Germany.
Rahmel
A
A
Schwalen
A
A
Calzia
E
E
Meyer
M
M
Piiper
J
J
D000818:Animals; D004285:Dogs; D006321:Heart / Q000502:physiology*; D006324:Heart Arrest, Induced; D006339:Heart Rate / Q000502:physiology; D006371:Helium; D009200:Myocardial Contraction / Q000502:physiology; D010507:Periodicity; D011650:Pulmonary Alveoli / Q000502:physiology; D011659:Pulmonary Gas Exchange / Q000502:physiology; D012126:Respiratory Dead Space; D015656:Respiratory Mechanics / Q000502:physiology*; D013459:Sulfur Hexafluoride
D006371:Helium; D013459:Sulfur Hexafluoride