Asymptomatic and symptomatic ischemic episodes in stable coronary disease share similar underlying characteristics and hemodynamic consequences.
Asymptomatic ischaemia during daily life has been a controversial topic for 20 years since the first report detailing episodes of silent ST segment depression during sleep in patients with coronary disease.' Asymptomatic ischaemic episodes are now known to be common during daily life in such patients.2 Though there are various theories why some episodes of ischaemia are asymptomatic and others symptomatic,3-5 both types of episode have similar underlying characteristics67 and haemodynamic consequences.89
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Mulcahy et al. (1994) studied this question.
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