Bench-to-bedside review: ventilatory abnormalities in sepsis

Crit Care. 2009;13(1):202. doi: 10.1186/cc7116. Epub 2009 Jan 15.


In septic patients increased central drive and increased metabolic demands combine to increase energy demands on the ventilatory muscles. This occurs at a time when energy supplies are limited and energy production hindered, and it leads to an energy supply-demand imbalance and often ventilatory failure. Problems related to contractile function of the ventilatory muscles also contribute, especially when the clinical course is prolonged. The increased ventilatory activity increases interactions between the ventilatory and cardiovascular systems, and when ventilatory muscles fail and mechanical ventilatory support is required a new set of problems emerges. In this review I discuss factors related to ventilatory muscle failure, giving emphasis to mechanical and supply demand aspects. I also review the implications of changes in ventilatory patterns for heart-lung interactions.

Publication types

  • Review

MeSH terms

  • Biomedical Research / trends
  • Humans
  • Point-of-Care Systems* / trends
  • Respiration Disorders / complications*
  • Respiration Disorders / diagnosis
  • Respiration Disorders / therapy*
  • Respiration, Artificial / trends
  • Respiratory Mechanics / physiology
  • Respiratory Muscles / physiology
  • Sepsis / complications*
  • Sepsis / diagnosis
  • Sepsis / therapy*