PImax and PEmax tracing

(A) A typical pressure tracing from a subject performing a PEmax. A peak pressure is seen and the 1-second average is determined by calculating the shaded area.
(B) A pressure tracing from a subject performing a PImax.

PEmax: maximum expiratory maneuver; PImax: maximum inspiratory maneuver.

Reprinted with permission of the American Thoracic Society. Copyright © 2022 American Thoracic Society. From: American Thoracic Society/European Respiratory Society. ATS/ERS statement on respiratory muscle testing. Am J Respir Crit Care Med 2002; 166:518. The American Journal of Respiratory and Critical Care Medicine is an official journal of the American Thoracic Society.

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