August 6, 2009Circulation Arrhythmia and Electrophysiology
Predicting Ventricular Arrhythmias in Patients With Ischemic Heart Disease
Why the study?
Does a wide QRS-T angle predict appropriate ICD therapy and mortality in primary prevention ICD recipients with ischemic heart disease?
Population
412 patients with ischemic heart disease and left ventricular ejection fraction <= 40% receiving primary…
Comparison
Wide QRS-T angle before device implantation vs Narrow QRS-T angle
Design
Cohort
Authors
Discussion
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Member takes
Implication
A wide QRS-T angle (planar >90 degrees or spatial >100 degrees) is a strong predictor of appropriate device therapy in primary prevention ICD recipients with ischemic heart disease, potentially aiding in risk stratification.
Structured PICO
Does a wide QRS-T angle predict appropriate ICD therapy and mortality in primary prevention ICD recipients with ischemic heart disease?
P
Population
412 patients (361 men, mean age 63+/-11 years) with ischemic heart disease and left ventricular ejection fraction <= 40% receiving primary prevention implantable cardioverter-defibrillators (ICDs).
I
Intervention
Wide QRS-T angle (planar >90 degrees or spatial >100 degrees) before device implantation
C
Comparator
Narrow QRS-T angle (planar <=90 degrees or spatial <=100 degrees)
O
Outcome
Occurrence of appropriate ICD therapy and mortalityhard clinical
A wide QRS-T angle (planar >90 degrees or spatial >100 degrees) is a strong predictor of appropriate device therapy in primary prevention ICD recipients with ischemic heart disease, potentially aiding in risk stratification.
Cite This Study
Borleffs et al. (2009) studied this question.