Key result
The absence of pathologic Q waves on a resting 12-lead electrocardiogram predicted the recovery of regional wall motion with a positive predictive value of 68%, compared to 11% in patients with Q waves, following successful recanalization of chronic total coronary occlusions.
Why the study?
Does the absence of Q waves on resting 12-lead ECG predict recovery of regional wall motion in patients with successful recanalization of chronic total coronary occlusions?
Cohort (n=43)
Single-blind
No
Does the absence of Q waves on resting 12-lead ECG predict recovery of regional wall motion in patients with successful recanalization of chronic total coronary occlusions?
Absolute Event Rate: 68% vs 11%
p-value: p=< 0.001
The absence of pathologic Q waves on a resting 12-lead ECG reliably predicts the recovery of regional left ventricular function after successful recanalization of chronic total coronary occlusions.
Authors
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May inform post-CTO recovery expectations; hypothesis-generating and requires prospective validation before guiding decisions.
Surber et al. (2005) conducted a cohort in Chronic total coronary occlusion with impaired regional wall motion (n=43). Absence of Q waves on resting 12-lead ECG vs. Presence of Q waves on resting 12-lead ECG was evaluated on Recovery of regional wall motion (improvement of WMSI by ≥ 1 SD/chord) (p=< 0.001). The absence of pathologic Q waves on a resting 12-lead electrocardiogram predicted the recovery of regional wall motion with a positive predictive value of 68%, compared to 11% in patients with Q waves, following successful recanalization of chronic total coronary occlusions.
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