Why the study?
Does prolonged hyperventilation induce coronary artery spasm in patients with angina pectoris who have a negative response to ergometrine?
Population
2 patients with angina pectoris and a negative ECG response to intravenous injection of 0.4 mg ergometrine
Comparison
Provocation with prolonged hyperventilation vs Intravenous injection of 0.4 mg ergometrine
Design
Case_series
Authors
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Case reports suggest hyperventilation provocation merits study; leaves open its diagnostic role versus ergometrine in vasospastic angina.
Does prolonged hyperventilation induce coronary artery spasm in patients with angina pectoris who have a negative response to ergometrine?
Prolonged hyperventilation may serve as an alternative diagnostic provocation test for coronary artery spasm in patients who do not respond to ergometrine.
Rasmussen et al. (1985) studied this question.
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