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Canadian Respiratory Journal
Volume 3, Issue 3, Pages 199-201
Case Report

Diagnosis of Primary Hyperventilation Syndrome by Polysomnography: A Report of Two Cases

Tarang N Sheth and Steven Kesten

The Toronto Hospital, University of Toronto, Toronto, Ontario, Canada

Copyright © 1996 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Two cases of primary hyperventilation syndrome misdiagnosed as asthma are reported. Polysomnography was used to diagnose the syndrome and to confirm the psychogenic etiology of the patients' symptoms.