[Cardiopulmonary interactions in patients under positive pressure ventilation]

Ann Fr Anesth Reanim. 2007 Mar;26(3):211-7. doi: 10.1016/j.annfar.2006.10.027. Epub 2007 Jan 22.
[Article in French]


Heart-lung interactions during positive-pressure ventilation are characterized by an extreme sensibility to the patient's intravascular volume status. Indeed, a fall in cardiac output due to decreased ventricular preload can be observed when initiating positive-pressure ventilation. This phenomenon is due to the close anatomic-functional association between heart and lungs, and to the fact that pulmonary volume and intrathoracic pressure variations cyclically modify heart-lung interactions. The present review address the questions of the physiological and physiopathological effects of positive-pressure ventilation on the right and left venous returns, and on pulmonary and systemic vascular resistances.

Publication types

  • English Abstract
  • Review

MeSH terms

  • Coronary Circulation / physiology*
  • Heart / physiopathology
  • Humans
  • Lung / blood supply
  • Lung / physiopathology
  • Positive-Pressure Respiration*
  • Pulmonary Circulation / physiology*
  • Vascular Resistance