Why the study?
What are the angiographic findings in patients with exercise-induced RS-T elevation?
What are the angiographic findings in patients with exercise-induced RS-T elevation?
Exercise testing can evoke electrocardiographic features of Prinzmetal's variant angina (RS-T elevation) in patients with a localized subocclusive coronary stenosis.
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Exercise-induced RS-T elevation may reflect focal subocclusive stenosis; case reports leave open whether angiography alters management.
In 4 patients in which an exercise test induced an elevation of the RS-T segment and an increase of the R-wave, coronary angiography showed a localized, subocclusive stenosis of the single major coronary vessel supplying the myocardial area responsible for the electrocardiographic alterations. This observation demonstrates the value of the exercise test in evoking electrocardiographic features often associated with Prinzmetal’s variant form of angina pectoris, when there is an anatomical basis for the syndrome.
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Bobba et al. (2008) studied this question.
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