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Related Experiment Videos

Fluvoxamine attenuates panic induced by 35% CO2 challenge

H J Pols1, R C Hauzer, J A Meijer

  • 1Department of Psychiatry and Neuropsychology, State University of Limburg, Maastricht, The Netherlands.

The Journal of Clinical Psychiatry
|November 1, 1996
PubMed
Summary

Six weeks of fluvoxamine treatment significantly reduced anxiety responses to a carbon dioxide (CO2) challenge in patients with panic disorder. This suggests fluvoxamine may help alleviate panic symptoms.

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Pharmacology

Background:

  • Panic disorder with agoraphobia is a debilitating condition characterized by anxiety.
  • The 35% CO2 challenge is a validated method for inducing anxiety in research settings.
  • Selective serotonin reuptake inhibitors (SSRIs) like fluvoxamine are commonly used to treat anxiety disorders.

Purpose of the Study:

  • To determine if 6 weeks of fluvoxamine treatment reduces the anxiogenic effect of a 35% CO2 challenge.
  • To explore the relationship between fluvoxamine's therapeutic effects and CO2-induced anxiety.

Main Methods:

  • A cohort of 11 patients diagnosed with panic disorder with agoraphobia participated.
  • Patients underwent a 35% CO2 challenge at the study's baseline.

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  • The CO2 challenge was repeated after 6 weeks of daily fluvoxamine treatment.

    • Main Results:

    • The anxiogenic effect of the 35% CO2 challenge was significantly reduced (p < .05) after 6 weeks of fluvoxamine treatment.
    • Patients reported less anxiety during the CO2 challenge post-treatment.
    • Fluvoxamine demonstrated a measurable impact on physiological and psychological anxiety responses.

    Conclusions:

    • Fluvoxamine treatment appears to mitigate the anxiogenic effects of CO2 inhalation in panic disorder patients.
    • A link exists between the anxiogenic impact of CO2 and the therapeutic efficacy of fluvoxamine.
    • These findings support fluvoxamine's role in managing panic disorder symptoms.