Why the study?
Does coronary artery spasm occurring spontaneously or after provocation by ergonovine maleate alter coronary blood flow and myocardial oxygen extraction?
Population
1 50-year-old man suffering from recurrent chest pain accompanied by transient ST-segment elevation
Comparison
Ergonovine maleate provocation vs Baseline / spontaneous chest pain
Design
Case_report
Authors
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Highlights spasm-induced flow reduction and oxygen extraction in variant angina; leaves open broader applicability.
Does coronary artery spasm occurring spontaneously or after provocation by ergonovine maleate alter coronary blood flow and myocardial oxygen extraction?
Coronary artery spasm produces a marked deficit in coronary blood flow associated with increased myocardial oxygen extraction, followed by a hyperemic response upon release.
Ricci et al. (1978) studied this question.
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