Syndrome of Diminished Vasodilator Reserve of the Coronary Microcirculation (Microvascular Angina or Syndrome X): Diagnosis by Combined Atrial Pacing and Thallium 201 Imaging—A Case Report
| Autor: | Steven Reinhart, Gregory J. Magarian, Robert T. Palac |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
medicine.medical_specialty
Ischemia 030204 cardiovascular system & hematology Chest pain Angina Pectoris Coronary artery disease Angina Nitroglycerin 03 medical and health sciences 0302 clinical medicine Internal medicine medicine Humans ST segment cardiovascular diseases 030212 general & internal medicine Radionuclide Imaging business.industry Microcirculation Cardiac Pacing Artificial Vasospasm Syndrome Middle Aged medicine.disease Coronary Vessels Vasodilation Thallium Radioisotopes Coronary vasospasm Cardiovascular agent Cardiology Female medicine.symptom Cardiology and Cardiovascular Medicine business Stress Psychological |
| Zdroj: | Angiology. 41:667-672 |
| ISSN: | 1940-1574 0003-3197 |
| DOI: | 10.1177/000331979004100813 |
| Popis: | Patients with angina-like chest pain without evidence of epicardial coronary artery disease or coronary arterial vasospasm are becoming increasingly recognized. These are often related to noncardiac causes including esophageal, musculoskeletal, and hyperventilatory or panic states. However, recently a subgroup of such patients are being recognized as having true myocardial ischemia and chest pain on the basis of diminished coronary microvascular vasodilatory reserve (microvascular ischemia or Syndrome X). The authors describe such a patient who was found to have replication of anginal pain associated with a reversible ischemic defect on thallium 201 imaging during atrial pacing, suggesting ischemia in this myocardial segment. Resolution of angina and ST segment electrocardiographic changes of ischemia occurred with cessation of pacing. We believe this is the first report of a patient with this form of myocardial ischemia diagnosed by this method and should be considered in patients with anginal chest pain after significant coronary artery disease and coronary vasospasm have been excluded. |
| Databáze: | OpenAIRE |
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