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[Syndrome X and microvascular angina]
L Ferrara1, E Tagliamonte, G Cice
1Cattedra di Cardiologia, Seconda Università degli Studi, Napoli.
Minerva Cardioangiologica
|January 12, 1999
Summary
X syndrome involves chest pain and ECG changes without clear coronary artery blockages. It stems from impaired coronary microcirculation and altered pain perception, often affecting women around age 50.
Area of Science:
- Cardiology
- Clinical Medicine
Context:
- X syndrome presents with anginous symptoms and ECG changes.
- Diagnosis excludes significant coronary lesions, hypertension, diabetes, or structural heart disease.
Purpose:
- To define X syndrome, its underlying pathophysiology, and therapeutic strategies.
- To explore the role of coronary microcirculation dysfunction and altered pain perception.
Summary:
- Reduced coronary flow reserve, particularly endothelium-dependent vasodilation deficits, characterizes X syndrome.
- Hypotheses include microcirculation dysfunction, endothelin-1 accumulation, and altered adenosine release due to preartery constriction.
- Therapeutic approaches include nitrates, calcium-channel blockers, beta-blockers, and potentially anxiolytics for anxious patients.
Impact:
- Highlights the challenges in diagnosing and treating X syndrome due to its complex pathophysiology.
- Emphasizes the need for further research into effective therapeutic interventions for microvascular dysfunction.