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Related Experiment Videos

Stress test reactivity in panic disorder.

W T Roth1, J Margraf, A Ehlers

  • 1Veterans Affairs Medical Center, Palo Alto, CA 94304.

Archives of General Psychiatry
|April 1, 1992
PubMed
Summary
This summary is machine-generated.

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Patients with panic disorder show tonic anxiety and are more likely to experience panic during carbon dioxide tests. Anticipatory anxiety, not physiological hyperreactivity, is key in panic provocation.

Area of Science:

  • Psychiatry
  • Psychology
  • Physiology

Background:

  • Panic disorder is characterized by recurrent, unexpected panic attacks.
  • Understanding the physiological and psychological responses to stressors is crucial for panic disorder research.

Purpose of the Study:

  • To compare the psychological and physiological reactivity of patients with panic disorder to normal subjects under various stress tests.
  • To investigate the role of anticipatory anxiety in panic provocation.

Main Methods:

  • Compared 52 panic disorder patients with 26 controls using mental arithmetic, cold pressor, and 5% carbon dioxide inhalation tests.
  • Assessed psychological and physiological responses, including tonic anxiety and cardiac tone.

Main Results:

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  • Panic disorder patients exhibited higher tonic anxiety and were more likely to request cessation of carbon dioxide tests or report panic attacks.
  • Patients reporting panic attacks showed greater anticipatory anxiety and increased beta-adrenergic cardiac tone.
  • No significant differences in physiological reactivity or recovery times were observed between patients and controls for most stressors.

Conclusions:

  • Anticipatory anxiety is a significant factor in panic provocation during stress tests.
  • Physiological measures show varied sensitivity to phasic or tonic anxiety in panic disorder.
  • Carbon dioxide inhalation did not elicit greater respiratory responses in panic disorder patients compared to controls.