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Related Experiment Videos

Cold water syncope

J E Brick, C M Lowther, S M Deglin

    Southern Medical Journal
    |December 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Swallowing cold liquids can trigger dangerous heart rate slowing (bradycardia) and fainting (syncope) in susceptible individuals. This case highlights a rare reflex potentially linked to esophageal stimulation.

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    Area of Science:

    • Cardiology
    • Gastroenterology
    • Autonomic Nervous System

    Background:

    • Swallowing-induced cardiac arrhythmias, particularly bradyarrhythmias, are recognized phenomena.
    • These events are often associated with underlying esophageal pathology.

    Observation:

    • A unique patient case presenting with significant bradycardia and syncope.
    • Symptoms were exclusively triggered by the ingestion of cold liquids.

    Findings:

    • The patient experienced pronounced heart rate deceleration and syncopal episodes.
    • The specific stimulus of cold liquid ingestion was identified as the sole trigger.

    Implications:

    • Suggests a potential vagal reflex pathway triggered by cold esophageal stimulation.
    • Highlights the importance of considering unusual triggers in diagnosing cardiac events.
    • May inform diagnostic approaches for unexplained syncope and bradycardia.