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Neurocardiology. Neurogenic syncope
1Departamento de Cardiología y Ciencias Cardiovasculares, Fundación Cardiovascular del Oriente Colombiano, Bucaramanga, Santander, Colombia.
Bailliere'S Clinical Neurology
|July 1, 1997
Summary
Neurogenic syncope, often caused by poor baroreflex adaptation to standing, leads to fainting. Understanding its mechanisms and diagnosis via head-up tilt testing is crucial for managing recurrent syncope.
Area of Science:
- Cardiology
- Neurology
- Physiology
Background:
- Neurogenic syncope is a common cause of recurrent fainting in individuals with structurally normal hearts.
- The underlying mechanisms of neurogenic syncope are not fully understood.
- Impaired arterial baroreflex adaptation and sympathetic nervous system dysfunction are implicated in its pathophysiology.
Purpose of the Study:
- To review the pathophysiology of neurogenic syncope.
- To outline diagnostic approaches for neurogenic syncope.
- To discuss therapeutic strategies for managing neurogenic syncope.
Main Methods:
- Review of current literature on neurogenic syncope.
- Discussion of head-up tilt testing protocols.
- Analysis of diagnostic sensitivity and specificity.
Main Results:
- Neurogenic syncope involves impaired baroreflexes and sympathetic withdrawal, leading to hypotension and bradycardia.
- Head-up tilt testing is a key diagnostic tool for neurogenic syncope.
- Diagnostic accuracy depends on the specific tilt protocol used.
Conclusions:
- Neurogenic syncope is a complex condition with multifactorial causes.
- Accurate diagnosis relies on appropriate testing and understanding of underlying mechanisms.
- Effective management requires a comprehensive approach to pathophysiology, diagnosis, and therapy.