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Related Experiment Videos

Lactate infusions and panic attacks: do patients and controls respond differently?

A Ehlers, J Margraf, W T Roth

    Psychiatry Research
    |April 1, 1986
    PubMed
    Summary

    Sodium lactate infusions increased anxiety and heart rate in both panic disorder patients and healthy controls. Blood pressure responses differed between groups, but lactate is not a reliable marker for panic attack proneness.

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    Area of Science:

    • Psychiatry
    • Neuroscience
    • Human Physiology

    Background:

    • Panic disorder and agoraphobia are characterized by recurrent panic attacks.
    • Identifying biological markers for panic disorder is crucial for diagnosis and treatment.
    • Sodium lactate infusion is a known method to provoke anxiety-like symptoms.

    Purpose of the Study:

    • To investigate the physiological and psychological responses to sodium lactate infusion in patients with panic disorder and healthy controls.
    • To determine if sodium lactate can serve as a biological marker for panic attack proneness.

    Main Methods:

    • A single-blind study involving 10 patients with panic disorder/agoraphobia and 10 healthy controls.
    • Administration of normal saline (placebo) and sodium lactate infusions.

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  • Monitoring of self-reported anxiety, heart rate, systolic, and diastolic blood pressure.

    • Main Results:

    • Sodium lactate equally increased self-reported anxiety and heart rate in both patient and control groups.
    • Systolic and diastolic blood pressure showed statistically different responses between the groups.
    • Lactate-induced effects mimicked natural panic/anxiety states in self-report and heart rate for both groups.
    • Patients tended to report somatic symptoms more broadly.

    Conclusions:

    • Sodium lactate administration does not appear to be a specific biological marker for panic attack proneness.
    • While blood pressure responses differed, overall physiological and subjective effects of lactate were similar across groups.
    • Further research may be needed to identify reliable biomarkers for panic disorder.