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Neurally mediated syncope
1Department of Cardiology, Texas Heart Institute at St. Luke's Episcopal Hospital, Houston, USA.
Texas Heart Institute Journal
|November 28, 2000
Summary
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.
- 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.