Background Right bundle branch block （RBBB） may present as slurred or notched S wave in lead V1. However, slurred or notched S wave may also represent slow conduction in the myocardium. Methods We retrospectively an...Background Right bundle branch block （RBBB） may present as slurred or notched S wave in lead V1. However, slurred or notched S wave may also represent slow conduction in the myocardium. Methods We retrospectively analyzed the QRS patterns in leads VgR to V5R in 7 patients with a slurred or notched S wave in lead V1. Results In the leads V3R to VSR, 6 patients showed incomplete or complete RBBB and 1 patient slurred or notched S wave. Conclusions In the majority of ECGs in a small patient series with slurred or notched S wave in lead V1, QRS morphology indicating incomplete or complete RBBB was present in leads V3R to VSR. A finding of fragmented QRS in these leads may indicate slow conduction in the myocardium.展开更多
目的探究在左房扩大的心房颤动(AF)患者中,左房前壁基质改变对窦性心律下12导联心电图V1导联P波终末电势(PTFV1)和心房激动时间(AAT)的影响。方法入选行经导管心内膜消融术且心房扩大的AF患者98例[73.5%为阵发性AF]。将患者分为3组:前...目的探究在左房扩大的心房颤动(AF)患者中,左房前壁基质改变对窦性心律下12导联心电图V1导联P波终末电势(PTFV1)和心房激动时间(AAT)的影响。方法入选行经导管心内膜消融术且心房扩大的AF患者98例[73.5%为阵发性AF]。将患者分为3组:前壁线性消融组(20例),前壁低电压组(21例)和对照组(57例)。记录所有患者术后的常规12导联心电图,比较各组之间PTFV1和AAT。结果前壁线性消融组较对照组PTFV1减小,AAT延迟[PTFV1:(0.007±0.011)mm·s vs (0.034±0.038)mm·s,P=0.024;AAT:(152.8±40.9)ms vs(91.6±21.1)ms,P<0.001];前壁低电压组患者较对照组的PTFV1亦减小,AAT亦延迟[PTFV1:(0.008±0.014)mm·s vs (0.034±0.038)mm·s,P=0.048;AAT:(137.7±40.8)ms vs (91.6±21.1)ms,P<0.001]。前壁线性消融组和前壁低电压组的PTFV1和AAT差别无显著性。结论左房扩大的患者, PTFV1减小,AAT延长提示左房前壁基质异常。展开更多
目的探讨心电图P波参数与脑白质病变(white matter lesions,WMLs)严重程度之间的关联,为WMLs的预防和治疗提供科学依据。方法选取289例符合入组标准的WMLs住院患者作为研究对象,其均接受常规12导联心电图和头颅磁共振成像检查。根据Faze...目的探讨心电图P波参数与脑白质病变(white matter lesions,WMLs)严重程度之间的关联,为WMLs的预防和治疗提供科学依据。方法选取289例符合入组标准的WMLs住院患者作为研究对象,其均接受常规12导联心电图和头颅磁共振成像检查。根据Fazekas量表评分将这些患者分为无-轻度组(158例)和中-重度组(131例)。收集两组患者的临床资料、既往病史、心电图P波参数[包括P波时限、P波电轴、V_(1)导联P波终末电势(terminal force of P-wave in lead V_(1),PTFV_(1))],以及血脂等数据,并进行比较分析。采用Logistic回归模型分析影响WMLs的独立危险因素。结果中-重度组患者的年龄、有高血压或糖尿病病史者占比及PTFV_(1)>4000μV·ms者占比均明显高于无-轻度组,且差异均有统计学意义(均P<0.01)。多变量Logistic回归分析表明,年龄增长、高血压、糖尿病以及PTFV_(1)>4000μV·ms均为WMLs的独立危险因素。结论无创心电图指标PTFV_(1)经济便捷、易于获取,可用于评估心房异常,对WMLs的防治具有一定的应用价值。展开更多
文摘Background Right bundle branch block （RBBB） may present as slurred or notched S wave in lead V1. However, slurred or notched S wave may also represent slow conduction in the myocardium. Methods We retrospectively analyzed the QRS patterns in leads VgR to V5R in 7 patients with a slurred or notched S wave in lead V1. Results In the leads V3R to VSR, 6 patients showed incomplete or complete RBBB and 1 patient slurred or notched S wave. Conclusions In the majority of ECGs in a small patient series with slurred or notched S wave in lead V1, QRS morphology indicating incomplete or complete RBBB was present in leads V3R to VSR. A finding of fragmented QRS in these leads may indicate slow conduction in the myocardium.
文摘目的探究在左房扩大的心房颤动(AF)患者中,左房前壁基质改变对窦性心律下12导联心电图V1导联P波终末电势(PTFV1)和心房激动时间(AAT)的影响。方法入选行经导管心内膜消融术且心房扩大的AF患者98例[73.5%为阵发性AF]。将患者分为3组:前壁线性消融组(20例),前壁低电压组(21例)和对照组(57例)。记录所有患者术后的常规12导联心电图,比较各组之间PTFV1和AAT。结果前壁线性消融组较对照组PTFV1减小,AAT延迟[PTFV1:(0.007±0.011)mm·s vs (0.034±0.038)mm·s,P=0.024;AAT:(152.8±40.9)ms vs(91.6±21.1)ms,P<0.001];前壁低电压组患者较对照组的PTFV1亦减小,AAT亦延迟[PTFV1:(0.008±0.014)mm·s vs (0.034±0.038)mm·s,P=0.048;AAT:(137.7±40.8)ms vs (91.6±21.1)ms,P<0.001]。前壁线性消融组和前壁低电压组的PTFV1和AAT差别无显著性。结论左房扩大的患者, PTFV1减小,AAT延长提示左房前壁基质异常。
文摘目的探讨心电图P波参数与脑白质病变(white matter lesions,WMLs)严重程度之间的关联,为WMLs的预防和治疗提供科学依据。方法选取289例符合入组标准的WMLs住院患者作为研究对象,其均接受常规12导联心电图和头颅磁共振成像检查。根据Fazekas量表评分将这些患者分为无-轻度组(158例)和中-重度组(131例)。收集两组患者的临床资料、既往病史、心电图P波参数[包括P波时限、P波电轴、V_(1)导联P波终末电势(terminal force of P-wave in lead V_(1),PTFV_(1))],以及血脂等数据,并进行比较分析。采用Logistic回归模型分析影响WMLs的独立危险因素。结果中-重度组患者的年龄、有高血压或糖尿病病史者占比及PTFV_(1)>4000μV·ms者占比均明显高于无-轻度组,且差异均有统计学意义(均P<0.01)。多变量Logistic回归分析表明,年龄增长、高血压、糖尿病以及PTFV_(1)>4000μV·ms均为WMLs的独立危险因素。结论无创心电图指标PTFV_(1)经济便捷、易于获取,可用于评估心房异常,对WMLs的防治具有一定的应用价值。
