What is the role of permissive hypercapnia in the mechanical ventilation of acute respiratory distress syndrome (ARDS)?

Updated: Apr 07, 2020
  • Author: Allon Amitai, MD; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Answer

Answer

Permissive hypercapnia is a ventilatory strategy that has won particular favor in the management of patients with ARDS and COPD/asthma who would otherwise require dangerously high tidal volumes and airway pressures. In patients without contraindications such as head injury, cerebrovascular accident (CVA), elevated intracranial pressure, or cardiovascular instability, permissive hypercapnia has permitted much decreased tidal volumes, airway pressures, and respiratory rates, though evidence for a decrease in mortality rates is incomplete. [20] The typically recommended target pH is 7.25.


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