Projection of electrocardiographic signs in praecordial maps after exercise in patients with ischaemic heart disease.
Key result
Post-exercise praecordial mapping detects ST depression in ~90% of CAD patients versus healthy controls.
- n=60
Why the study?
Electrocardiographic projections of regional myocardial ischaemia or cell death after exercise in patients with ischaemic heart disease were not clearly outlined by praecordial surface maps.
Does praecordial surface mapping of the electrocardiogram before and after exercise detect ST segment and R/S wave changes in patients with coronary artery disease compared to healthy individuals?
Population
40 patients with angiocardiographically proven coronary artery disease and 20 individuals with no detectable cardiovascular disease
Comparison
Patients with coronary artery disease vs individuals with no detectable cardiovascular disease
Design
Observational study with praecordial ECG surface mapping before and after exercise
Authors
Discussion
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Implication
May support noninvasive ischemia detection in CAD; leaves open diagnostic utility versus standard ECG in prospective studies.
Study Design
Type
Observational (n=60)
Structured PICO
Does praecordial surface mapping of the electrocardiogram before and after exercise detect ST segment and R/S wave changes in patients with coronary artery disease compared to healthy individuals?
P
Population
60 participants, including 40 with angiocardiographically proven coronary artery disease and 20 healthy controls, evaluated with praecordial surface mapping before and after exercise.
E
Exposure
Praecordial surface maps of the electrocardiogram recorded before and after exercise using 16 electrodes covering the left hemithorax.
C
Comparator
Individuals with no detectable cardiovascular disease.
O
Outcome
ST segment and R and S wave changes in the praecordial maps.surrogate
Praecordial electrocardiographic mapping during exercise can effectively outline regional myocardial ischemia in patients with coronary artery disease.
Cite This Study
Fox et al. (1979) conducted an observational in Ischaemic heart disease (n=60). Exercise with praecordial surface mapping vs. Individuals with no detectable cardiovascular disease was evaluated on ST segment and R and S wave changes. Praecordial surface mapping after exercise detected ST segment depression in 36 and elevation in 10 of 40 patients with coronary artery disease, compared to no significant changes in 20 controls.