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Related Experiment Videos

Paroxetine increases heart rate variability in panic disorder

P Tucker1, P Adamson, R Miranda

  • 1Department of Psychiatry, University of Oklahoma Health Science Center, Oklahoma City 73104, USA.

Journal of Clinical Psychopharmacology
|October 8, 1997
PubMed
Summary

Paroxetine treatment improved heart rate variability in panic disorder patients, normalizing autonomic nervous system function and potentially reducing cardiac risks. This selective serotonin reuptake inhibitor may offer cardiovascular benefits for individuals with panic disorder.

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Area of Science:

  • Cardiology
  • Psychiatry
  • Autonomic Neuroscience

Background:

  • Panic disorder is associated with decreased heart rate variability (HRV), a risk factor for sudden cardiac death.
  • Imipramine, a tricyclic antidepressant, can further reduce HRV in panic patients.
  • Selective serotonin reuptake inhibitors (SSRIs) like paroxetine may offer benefits by improving HRV.

Purpose of the Study:

  • To compare autonomic components of HRV in unmedicated panic patients and controls.
  • To assess the effects of paroxetine on HRV and baroreflex response in panic disorder.
  • To investigate the potential of paroxetine in mitigating cardiac risks associated with panic disorder.

Main Methods:

  • Power spectral analysis was used to assess HRV.
  • 17 unmedicated panic patients and 16 control subjects were studied.

Related Experiment Videos

  • Patients received paroxetine 20 mg/day for 4 weeks, with assessments before and after treatment.

    • Main Results:

    • Panic patients exhibited higher sympathetic activity and impaired baroreflex response pre-treatment.
    • Paroxetine treatment decreased sympathetic activity and normalized the sympathetic baroreflex response.
    • Paroxetine increased parasympathetic activity while preserving the baroreflex response.
    • Nine patients (out of 17) showed >50% reduction in panic attacks.

    Conclusions:

    • Paroxetine treatment improves HRV and autonomic function in panic disorder patients.
    • Paroxetine may normalize the sympathetic component of the baroreflex response.
    • SSRIs, including paroxetine, show potential in reducing cardiac mortality in panic disorder.