Hyperventilation Induced Syncope: Differential Feature of Head-up
Tilt Table Test with Transcranial Doppler in Patient with
Hyperventilation Syndrome from True Syncope

J Korean Neurol Assoc > Volume 32(4); 2014 > Article

Journal of the Korean Neurological Association 2014;32(4): 310-313.

과호흡실신: 뇌혈류초음파검사를 병행한 기립경사검사를 통한 진성실신과의 감별

이병성, 권석경 이상래 박종완 이장준

대구파티마병원 신경과

Hyperventilation Induced Syncope: Differential Feature of Head-up Tilt Table Test with Transcranial Doppler in Patient with Hyperventilation Syndrome from True Syncope

Byung-Sung Lee

Department of Neurology, Daegu Fatima Hospital, Daegu, Korea

Abstract

The causes of a transient loss of consciousness (TLOC) are divided into syncope, epileptic seizures, cerebrovascular diseases and functional disorders such as hyperventilation (HV) syndrome, psychogenic pseudosyncope. The differential diagnosis of TLOC is may be difficult due to lack of history, misleading features, or confusion over the definition of syncope. We have experienced a rare case of HV syncope that TLOC developed after HV from mental stress, and differentiated by head-up tilt table test with transcranial doppler. Key Words: Hyperventilation, Tilt table test, Transcranial doppler