CO2 challenge of patients with panic disorder

Am J Psychiatry. 1987 Aug;144(8):1080-2. doi: 10.1176/ajp.144.8.1080.

Abstract

In an open trial, five of eight panic disorder patients and none of five control subjects panicked after inhalation of two breaths of 35% CO2 and 65% O2; none panicked after placebo. Using 35% CO2 to induce panic is safe, simple, and well tolerated and may provide a valuable laboratory model of panic.

Publication types

  • Clinical Trial
  • Controlled Clinical Trial
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Administration, Inhalation
  • Adult
  • Anxiety Disorders / chemically induced*
  • Anxiety Disorders / diagnosis
  • Carbon Dioxide* / administration & dosage
  • Fear*
  • Humans
  • Oxygen / administration & dosage
  • Panic*
  • Pilot Projects

Substances

  • Carbon Dioxide
  • Oxygen