Why the study?
Does the presence of a fragmented QRS complex on 12-lead ECG improve the detection of prior myocardial scar compared to Q waves alone in patients referred for nuclear stress tests?
Population
479 consecutive patients referred for nuclear stress tests (mean age 58.2+/-13.2 years; 283 males)
Comparison
Fragmented QRS complex (fQRS) on 12-lead ECG vs Q wave on 12-lead ECG
Design
Cohort
Authors
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May improve ECG scar detection over Q waves in stress referrals; leaves open prospective validation before practice change.
Does the presence of a fragmented QRS complex on 12-lead ECG improve the detection of prior myocardial scar compared to Q waves alone in patients referred for nuclear stress tests?
Fragmented QRS on a 12-lead ECG has substantially higher sensitivity and negative predictive value for detecting prior myocardial infarction compared to traditional Q waves.
Das et al. (2006) studied this question.
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