Key result
Patients with possible angina but normal coronary arteriograms rarely have coronary artery spasm or myocardial ischaemia, as oesophageal spasm is a common cause of diagnostic difficulty.
In patients presenting with possible angina but normal coronary arteriograms, esophageal spasm is a common cause of symptoms, whereas true myocardial ischemia is rare.
Supports considering esophageal spasm in suspected angina with normal arteriograms; leaves open need for prospective diagnostic validation.
Follow-up of patients with possible angina but normal coronary arteriograms suggests that coronary artery spasm or other causes of myocardial ischaemia are rare in these patients. Oesophageal spasm proved a common cause of diagnostic difficulty.
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Dart et al. (1980) studied this question. Patients with possible angina but normal coronary arteriograms rarely have coronary artery spasm or myocardial ischaemia, as oesophageal spasm is a common cause of diagnostic difficulty.
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