title: Electrocardiogram for predicting cardiac functional recovery.
abstract: To investigate if the 12-lead resting electrocardiogram (ECG) is a predictor of left ventricular (LV) functional recovery after revascularization of chronic total coronary artery occlusions (CTO). Revascularization was performed in 58 CTO patients who had impaired regional wall motion. The 12-lead resting ECG was used to evaluate Q-wave, QT dispersion, and other parameters. Pre- and postoperative LV regional wall motions were evaluated by real-time three-dimensional echocardiography (RT-3DE). In patients with non-Q-wave, the wall motion score index (WMSI) was dropped from 1.56 ± 0.31 to 1.12 ± 0.21 (P < 0.05), while there was no significant changes (1.73 ± 0.12 and 1.59 ± 0.23, P > 0.05) for WMSI in patients with Q-wave. Preoperative non-Q-wave at baseline was predicted recovery with 88 % sensitivity and 68 % specificity. Positive predictive value for recovery was 67 % in patients with non-Q-wave. The presence of Q-wave can predict non-recovery of the regional wall motion with 68 % sensitivity and 88 % specificity. For CTO patients treated by revascularization, recovery can be predicted reliably through the analysis of pathological Q-wave on the 12-lead resting ECG.
authors.affiliation: Department of Cardiology, The Fourth People's Hospital of Ji'nan, The Second Affiliated Hospital of Tai Shan Medical College, Ji'nan, 250031, China.
authors.forename: Wenwei
authors.initials: W
authors.lastname: Yue
authors.forename: Guangfu
authors.initials: G
authors.lastname: Wang
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Fengtian
authors.initials: F
authors.lastname: Huangfu
authors.forename: Ruyi
authors.initials: R
authors.lastname: Jia
mesh_terms: D000368:Aged; D001026:Coronary Artery Bypass; D054059:Coronary Occlusion / Q000503:physiopathology / Q000601:surgery; D003331:Coronary Vessels / Q000503:physiopathology / Q000601:surgery; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D062645:Percutaneous Coronary Intervention; D020127:Recovery of Function; D012146:Rest