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Indian J Crit Care Med. 2014 Sep;18(9):612-4. doi: 10.4103/0972-5229.140154.

Permissive hypercapnia: Is there any upper limit?

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Department of Critical Care Medicine, Sarvodaya Hospital, Sector - 8, Faridabad, Haryana, India.


A 19-year-old male presented with history of massive hemoptysis. The patient was kept on mechanical ventilation because of severe hypoxia. Lung protective ventilation with low tidal volume was given in view of very poor pulmonary compliance. During the course of treatment, the patient developed a very high CO2 level of 373 mmHg. The patient was successfully weaned off on the 9(th) day without any obvious adverse consequences.


Lung protective ventilation; permissive hypercapnia; supercarbia

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