Online monitoring of multiple precordial leads in high risk patients with coronary artery disease–A pilot study

50 high-risk patients with coronary artery disease (40 with acute myocardial infarction and 10 with unstable angina, class IV) who had ST-segment depression or elevation ≥0.2 mV in one or more precordial leads on admission.

Online monitoring using a computerized precordial mapping system (preliminary mapping with 48 electrodes, followed by 5 to 8 electrodes placed around the centre of ST-segment changes) for 24 to 48 hours.

Detection of ischaemic attacks based on Q and R wave amplitudes and ST-segment changes.surrogate