Objective To investigate electrocardiogram(ECG)characteristics and related factors of gestational diabetes mellitus(GDM)complicated by depressive disorder.Methods The clinical data of 243 patients with GDM who received treatment at Peking University Third Hospital from September 2021 to December 2022 were retrospectively analyzed.According to the scoring results of the Self-rating Depression Scale(SDS),these patients were divided into an observation group(GDM+depressive disorder,n=51)and a control group(GDM alone,n=192).The x2 test was used to analyze the relationship between GDM complicated by depressive disorder and ECG diagnosis results.Additionally,the t-test was used to compare ECG indicators between the two groups.Results Compared with the control group,patients in the observation group had a higher incidence of abnormal ECG indicators,including bradycardia(x2=4.68,P=0.030),premature contraction(x2=10.78,P=0.001),and atrioventricular block(x2=15.04,P＜0.001).However,there were no significant differences in the incidences of tachycardia,bundle branch block,or ST-T changes between the two groups(all P＞0.05).Compared with the control group,the observation group exhibited significantly increased heart rate[(73.43±8.24)beats/min vs.(67.22±5.08)beats/min],maximum QT interval[(419.09±36.00)ms vs.(351.95±32.07)ms],minimum QT interval[(363.31±30.78)ms vs.(316.52±29.10)ms],and QT dispersion[(55.78±17.87)ms vs.(35.42± 13.18)ms,t=-5.13,-12.95,-10.08,-7.60,all P＜0.001].Conclusion Among patients with gestational diabetes mellitus,those with depressive disorder have an increased risk of exhibiting abnormal electrocardiogram patterns compared with those without depressive disorder.
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