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Neurally mediated syncope.

M Zaqqa1, A Massumi

  • 1Department of Cardiology, Texas Heart Institute at St. Luke's Episcopal Hospital, Houston, USA.

Texas Heart Institute Journal
|November 28, 2000
PubMed
Summary
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Neurally mediated syncope involves autonomic dysfunction causing fainting. Diagnosis involves a head-up tilt-table test, with treatments ranging from lifestyle changes to pacemakers for severe cases.

Area of Science:

  • Cardiology
  • Neurology
  • Autonomic Nervous System Research

Background:

  • Neurally mediated syncope is a common condition affecting autonomic regulation of postural tone.
  • It leads to hypotension, bradycardia, and transient loss of consciousness.
  • Orthostatic stress is a frequent trigger for this reflex syncope.

Purpose of the Study:

  • To outline the diagnostic approach for neurally mediated syncope.
  • To review current treatment strategies for this condition.
  • To highlight advanced treatment options for refractory cases.

Main Methods:

  • A stepwise diagnostic approach is employed when the cause of syncope is uncertain.
  • The head-up tilt-table test is utilized to confirm the diagnosis.

Related Experiment Videos

  • Evaluation of patient-reported symptoms like nausea, lightheadedness, warmth, and pallor.

    • Main Results:

    • The diagnostic process aims to identify neurally mediated syncope accurately.
    • Effective treatments include behavioral modification and pharmacologic therapies.
    • Pacemaker implantation is an option for severe, recurrent syncope unresponsive to conventional treatments.

    Conclusions:

    • Neurally mediated syncope requires a structured diagnostic pathway.
    • A combination of conservative and medical treatments can manage most cases.
    • Interventional therapy with pacemakers offers a solution for intractable neurally mediated syncope.