Impact of Diabetes Mellitus on the Improvement in Signal-Averaged Electrocardiography After Coronary Artery Bypass Grafting
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概要
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Background Although it has been reported that coronary artery bypass grafting (CABG) for multivessel disease markedly improves several parameters of signal-averaged electrocardiography (SAECG), its beneficial effect on SAECG is variable. The hypothesis of the present study was that the presence of diabetes mellitus (DM) affects the improvement in SAECG after CABG. Methods and Results Pre- and post-operative SAECGs were recorded in 100 consecutive patients who under-went complete surgical revascularization. Changes in the following parameters were compared between the diabetic (n=43) and non-diabetic (n=57) patients : filtered QRS duration (dQRS), root mean square voltage in the terminal 40 s of the QRS complex (RMS40), and duration of the terminal low-amplitude signal lower than 40μV (LAS40). Although baseline characteristics and the occurrence of late potentials were similar in both groups, quantitative improvements in the SAECG parameters after CABG were significantly greater in non-diabetic than in diabetic patients (dQR S : 109±22ms vs 102±19ms in diabetics and 106±21ms vs 88±11ms in non-diabetics ; p=0.028, RMS40 : 55±46μV vs 65±38μV in diabetics and 50±37μV vs 76±37μV in non-diabetics ; p=0.037, LAS40 : 31±20ms vs 26±17ms in diabetics and 32±12ms vs 17±8ms in non-diabetics ; p=0.007, respectively). Conclusions The presence of DM limits the CABG-induced improvement in SAECG. In diabetic patients, therefore, perioperative changes of the SAECG must be interpreted with caution.
- 社団法人日本循環器学会の論文
- 2004-03-20
著者
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Takami Yoshiyuki
Divisions of Cardiovascular Surgery, Kasugai Municipal Hospital
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Ina Hiroshi
Division Of Cardiovascular Surgery Kasugai Municipal Hospital
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Takami Yoshiyuki
Division Of Cardiovascular Surgery Kasugai Municipal Hospital
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