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首页> 外文期刊>Circulation journal >Clinical implications of intermediate QRS prolongation in the absence of bundle-branch block in patients with ST-segment-elevation acute myocardial infarction.
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Clinical implications of intermediate QRS prolongation in the absence of bundle-branch block in patients with ST-segment-elevation acute myocardial infarction.

机译：ST段抬高急性心肌梗死患者在无束支传导阻滞的情况下中等QRS延长的临床意义。

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摘要

BACKGROUND: In the reperfusion era the clinical characteristics of intermediate QRS prolongation without bundle-branch block (BBB) remain unclear in patients with ST-segment elevation myocardial infarction (STEMI). METHODS AND RESULTS: A total of 465 patients with STEMI within 24 h of onset were classified into 3 groups according to QRS duration on presenting electrocardiograms: 338 patients had QRS duration <100 ms (group N), 71 had QRS duration >or=100 ms without BBB (group W), and 56 had BBB (group B). The frequency of Killip class >1 was higher in group W (28%) than in group N (12%), but lower than in group B (47%) (p<0.05, respectively). The percentages of patients with non-anterior infarction (69% vs 42%, 47%), 3-vessel disease (30% vs 9%, 16%), and coronary artery bypass graft surgery (24% vs 4%, 13%) were higher in group W than in groups N and B (all p<0.05). In group W, 6-month-mortality was similar to that in group N, but lower than that in group B (4%, 3% vs 25%, p<0.05 respectively). CONCLUSIONS: In the reperfusion era, although patients with intermediate QRS prolongation without BBB have more severe coronary disease, 6-month-mortality is similar to those with normal conduction, but lower than those with BBB.
机译：背景：在再灌注时代，ST段抬高型心肌梗死（STEMI）患者的中间QRS延长无束支传导阻滞（BBB）的临床特征仍不清楚。方法和结果：根据心电图上的QRS持续时间，将465例STEMI患者在发作24小时内按QRS持续时间分为三组：338例QRS持续时间<100 ms（N组），71例QRS持续时间>或= 100 ms，没有BBB（W组），56岁有BBB（B组）。 W组的Killip类别> 1的频率高于N组（12％），但低于B组（47％）（分别为p <0.05）。非前部梗死患者（69％vs 42％，47％），三支血管疾病（30％vs 9％，16％）和冠状动脉搭桥术（24％vs 4％，13％）的百分比）在W组中高于N和B组（所有p <0.05）。 W组的6个月死亡率与N组相似，但低于B组（分别为4％，3％和25％，p <0.05）。结论：在再灌注时代，尽管QRS延长中期但无BBB的患者患有更严重的冠心病，但6个月的死亡率与传导正常的患者相似，但低于BBB的患者。

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