title: Coronary Revascularization Improves QT Dispersion in Patients with Chronic Coronary Artery Total Occlusion.
abstract: As an important parameter of cardiac functions, QT interval is usually irregular in patients with chronic coronary artery total occlusion (CTO). We sought to determine the effect of coronary revascularization (CRV) on QT interval dispersion in patients with CTO. To this end, we used electrocardiogram of 12 leads to record changes in the QT interval dispersion in 22 patients with CTO treated with percutaneous coronary intervention (PCI) and 24 patients treated with coronary artery bypass grafting (CABG). Our data showed that QTd and QTcd diminished markedly (P < 0.01) after PCI or CABG. No significant difference was observed between the postoperative groups (P > 0.05) or between PCI and CABG groups. We concluded that CRV could diminish QTd and QTcd in patients with CTO with no distinguishable differences with PCI and CABG procedures. Therefore, CRV can revitalize the existing functional myocardium and resume the myocardial electrophysiological functions in patients with CTO.
authors.affiliation: The Fourth People's Hospital of Ji'nan, Ji'nan, 250031, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Shandong Provincial Hospital, Shandong University, Shandong, China.
authors.forename: Xiaojian
authors.initials: X
authors.lastname: Zhang
authors.affiliation: The Fourth People's Hospital of Ji'nan, Ji'nan, 250031, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: The Fourth People's Hospital of Ji'nan, Ji'nan, 250031, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.affiliation: Laiwu Health School, Laiwu, China.
authors.forename: Yukun
authors.initials: Y
authors.lastname: Liu
authors.affiliation: The Fourth People's Hospital of Ji'nan, Ji'nan, 250031, China. yuewenweiz@163.com.
authors.forename: Wen-Wei
authors.initials: WW
authors.lastname: Yue
authors.affiliation: The Fourth People's Hospital of Ji'nan, Ji'nan, 250031, China. jiaruyiz@163.com.
authors.forename: Ru-Yi
authors.initials: RY
authors.lastname: Jia
mesh_terms: D000328:Adult; D000368:Aged; D017023:Coronary Angiography; 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; D009206:Myocardium / Q000473:pathology; D062645:Percutaneous Coronary Intervention / Q000379:methods*; D011379:Prognosis; D015203:Reproducibility of Results; D016896:Treatment Outcome
keywords: Chronic total occlusion; Coronary artery bypass grafting; Coronary artery disease; Percutaneous coronary intervention; QT dispersion