Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Status asthmaticus other diagnostic studies
Introduction
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Overview
Overview
FEV1 lower than 60% predicted is strongly suggestive of severe airway obstruction. Peak flow rate measurement is a simple bedside method to assess the severity of airway obstruction. A red zone indicates less than 50% of the usual or normal peak flow reading signifying a severe airway obstruction.
References
References
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]