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1 Dept of Internal Medicine, Sozialmedizinisches Floridsdorf and 2 Second Medical Dept, Krankenanastalt Rudolfstiftung, Vienna, Austria
CORRESPONDENCE: D. Kiss, SMZ Floridsdorf, Dept of Internal Medicine, Hinaysgasse 1, 1210, Vienna, Austria. Fax: 43 1275222109. E-mail: dora.kiss@flo.magwien.gv.at
Keywords: angina pectoris, asthma, bronchial hyperreactivity, echocardiography, stress
Received: December 13, 2001
Accepted October 28, 2002
Many patients undergoing pharmacological stress echocardiography for assessing symptoms suggestive of coronary artery disease are found to have a normal test. This study was performed to evaluate whether asthma symptoms simulate angina pectoris.
A total 41 consecutive patients who had a negative pharmacological stress echocardiography and had been evaluated for angina pectoris were studied. Patients with previously known coronary artery disease or obstructive lung disease were excluded. Lung function testing was performed and the authors proceeded either with the administration of a bronchodilator or with methacholine challenge testing. A questionnaire was applied to assess the symptoms dyspnoea, chest tightness and substernal burning at the end of the challenge test. In addition, patients were asked if they were experiencing those symptoms that made them seek medical attention. From the 41 patients tested, 26 patients showed a significant bronchial hyperreactivity (mean±sd provocative concentration causing a 20% fall in the forced expiratory volume in one second 5.93±4.50 mg·mL1). A total of 20 patients confirmed having those symptoms that led to cardiac evaluation.
It was concluded that symptoms suggestive of angina pectoris might represent bronchial asthma. This should be considered in the differential diagnosis of angina pectoris.
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