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Related Experiment Videos

Experimental pathophysiology of panic

E Griez1, K Schruers

  • 1Academic Anxiety Center and Department of Psychiatry & Neuropsychology, Maastricht University, The Netherlands.

Journal of Psychosomatic Research
|December 22, 1998
PubMed
Summary
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Symptom profiles of natural and laboratory panic attacks.

Acta neuropsychiatrica·2016

Laboratory models using lactate and carbon dioxide challenges have advanced our understanding of panic disorder pathophysiology. These studies reveal hyperventilation is a symptom, not a cause, and highlight a potential genetic predisposition.

Area of Science:

  • Psychiatry
  • Neuroscience
  • Human Physiology

Background:

  • Panic disorder pathophysiology understanding has evolved.
  • Early research focused on lactate infusion and hyperventilation.
  • Hyperventilation is now recognized as a symptom, not a cause, of panic attacks.

Purpose of the Study:

  • To review the expansion of knowledge on panic disorder pathophysiology.
  • To emphasize laboratory models, specifically lactate and carbon dioxide challenges.
  • To explore the validity of cholecystokinin as a panic disorder model.

Main Methods:

  • Review of experimental data on lactate infusion and panic attacks.
  • Analysis of carbon dioxide challenges in inducing panic attacks.
  • Examination of studies involving first-degree relatives and twins for genetic predisposition.

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Main Results:

  • Lactate infusion can induce panic attacks, initially thought to be linked to hyperventilation.
  • Hyperventilation is a symptom, not a cause; hypercapnia (high CO2) provokes panic attacks.
  • Carbon dioxide challenges serve as a valid model for panic disorder, with genetic links suggested.

Conclusions:

  • Laboratory models like lactate and CO2 challenges have significantly advanced panic disorder research.
  • Evidence suggests a constitutional predisposition to panic disorder.
  • The false suffocation alarm theory offers an integrative framework for understanding panic attacks.