Pub Date : 2024-03-27DOI: 10.2174/0102506882297515240320040938
Abdelhameed Elsayed, H. Kheirallah, Abdulaziz Alsuwayh, Ibrahim Osman
The relationship between ECG changes in dilated nonischemic cardiomyopathy and ejection fraction (EF) is complex and poorly understood. Thus, this study aimed to identify the most common patterns of ECG associated with dilated nonischemic cardiomyopathy and their relationship to EF. A retrospective cross-sectional study was conducted between 2019 and 2022, including 100 consecutive patients with nonischemic dilated cardiomyopathy. ECG data were rate, axis, left (LBBB) and right bundle branch block (RBBB), first-degree heart block, premature ventricular contractions, depth of S wave in leads V1 and V2, length of R wave in leads V2 and V6, the ratio of R/S in the lead V4, left ventricular hypertrophy (LVH), maximum R wave length in leads I, II, and III, poor R wave progression, ST-segment elevation, and T wave inversion. The most common ECG pattern associated with cardiomyopathy was T-wave inversion (47%). The EF was 23.9± 8.87% in patients with LBBB and 25.5± 8.07% in patients without LBBB (P= 0.361). In patients with T-wave inversion, the EF was 23.4± 8.21%, and it was 26.28± 8.35% in patients without T-wave inversion (P= 0.086). In patients with LVH, the EF was 23.89± 7.84%, and it was 25.5± 8.66% in patients without LVH (P= 0.354). A negative nonsignificant correlation existed between SV1, SV2, RV2, RV6, R/S V4, and maximum R in I, II, III, and EF. The study showed that T-wave inversion was the most common pattern associated with dilated nonischemic cardiomyopathy. The study provided insight into the negative correlation between EF and SV1, SV2, RV2, RV6, R/S V4, and maximum R in I, II, and III, although it did not reach a significant level.
扩张型非缺血性心肌病的心电图变化与射血分数(EF)之间的关系十分复杂,人们对其了解甚少。因此,本研究旨在确定与扩张型非缺血性心肌病相关的最常见心电图模式及其与射血分数的关系。心电图数据包括心率、心轴、左束支传导阻滞(LBBB)和右束支传导阻滞(RBBB)、一级心脏传导阻滞、室性早搏、V1和V2导联的S波深度、V2和V6导联的R波长度、V4导联的R/S比值、左室肥厚(LVH)、I、II和III导联的最大R波长度、R波进展不佳、ST段抬高和T波倒置。与心肌病相关的最常见心电图模式是 T 波倒置(47%)。LBBB患者的EF值为23.9± 8.87%,无LBBB患者的EF值为25.5± 8.07%(P= 0.361)。T波倒置患者的EF为23.4± 8.21%,无T波倒置患者的EF为26.28± 8.35%(P= 0.086)。有 LVH 的患者的 EF 为 23.89±7.84%,无 LVH 的患者的 EF 为 25.5±8.66%(P= 0.354)。SV1、SV2、RV2、RV6、R/S V4、Ⅰ、Ⅱ、Ⅲ期最大 R 与 EF 之间存在非显著负相关。该研究揭示了 EF 与 SV1、SV2、RV2、RV6、R/S V4 和 I、II、III 期最大 R 之间的负相关性,尽管未达到显著水平。
{"title":"Electrocardiographic Patterns and Ejection Fraction in Patients with\u0000Nonischemic Dilated Cardiomyopathy: A Cross-Sectional Retrospective Study","authors":"Abdelhameed Elsayed, H. Kheirallah, Abdulaziz Alsuwayh, Ibrahim Osman","doi":"10.2174/0102506882297515240320040938","DOIUrl":"https://doi.org/10.2174/0102506882297515240320040938","url":null,"abstract":"\u0000\u0000The relationship between ECG changes in dilated nonischemic cardiomyopathy and ejection fraction (EF) is complex and poorly understood. Thus,\u0000this study aimed to identify the most common patterns of ECG associated with dilated nonischemic cardiomyopathy and their relationship to EF.\u0000\u0000\u0000\u0000A retrospective cross-sectional study was conducted between 2019 and 2022, including 100 consecutive patients with nonischemic dilated\u0000cardiomyopathy. ECG data were rate, axis, left (LBBB) and right bundle branch block (RBBB), first-degree heart block, premature ventricular\u0000contractions, depth of S wave in leads V1 and V2, length of R wave in leads V2 and V6, the ratio of R/S in the lead V4, left ventricular\u0000hypertrophy (LVH), maximum R wave length in leads I, II, and III, poor R wave progression, ST-segment elevation, and T wave inversion.\u0000\u0000\u0000\u0000The most common ECG pattern associated with cardiomyopathy was T-wave inversion (47%). The EF was 23.9± 8.87% in patients with LBBB\u0000and 25.5± 8.07% in patients without LBBB (P= 0.361). In patients with T-wave inversion, the EF was 23.4± 8.21%, and it was 26.28± 8.35% in\u0000patients without T-wave inversion (P= 0.086). In patients with LVH, the EF was 23.89± 7.84%, and it was 25.5± 8.66% in patients without LVH\u0000(P= 0.354). A negative nonsignificant correlation existed between SV1, SV2, RV2, RV6, R/S V4, and maximum R in I, II, III, and EF.\u0000\u0000\u0000\u0000The study showed that T-wave inversion was the most common pattern associated with dilated nonischemic cardiomyopathy. The study provided\u0000insight into the negative correlation between EF and SV1, SV2, RV2, RV6, R/S V4, and maximum R in I, II, and III, although it did not reach a\u0000significant level.\u0000","PeriodicalId":508641,"journal":{"name":"New Emirates Medical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}