患有心力衰竭和左捆分支障碍的患者的CMR特征
Raluca Tomoaia1,2, Peter Harrison1, Lydia Bevis1
1Biomedical Imaging Sciences Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Woodhouse, Leeds, West Yorkshire LS2 9JT, UK.
European heart journal. Imaging methods and practice
|June 7, 2024
概括
患有左束支部阻塞 (LBBB) 和心力衰竭减少射出分数 (HFrEF) 的患者表现出明显的心磁共振特征,但与没有LBBB的患者相比,恢复率相似. 减少的射出分数独立地预测只有LBBB患者的不恢复.
科学领域:
- 心脏病学 心脏病学
- 心血管成像 - 心血管成像
- 心脏衰竭研究研究
背景情况:
- 减少射出分数 (HFrEF) 的心力衰竭需要了解潜在的原因和恢复的预测因素.
- 左捆支部阻塞 (LBBB) 是HFrEF的常见发现,影响心脏结构和功能.
- 心血管磁共振 (CMR) 提供了对心脏形态和组织特征的详细见解.
研究的目的:
- 在HFrEF患者中识别非缺血源的LBBB的独特CMR特征.
- 评估左心室喷射分数 (LVEF) 恢复的预测因子,在有或没有LBBB的HFrEF患者中.
主要方法:
- 预期招募接受CMR的HFrEF患者 (LVEF ≤40%) 进行CMR.
- 排除已知冠状动脉疾病或先天性心脏病的患者.
- 在LBBB和非LBBB集团之间比较CMR发现和LVEF恢复率.
主要成果:
- 与非LBBB患者相比,LBBB患者的左心室较大,右心室较小.
- 基线LVEF或总体LVEF恢复率在两组之间没有显著差异.
- 降低的LVEF仅在LBBB队列中是LV不恢复的独立预测因素.
结论:
- 患有LBBB的HFrEF患者在CMR上表现出明显的心室重塑,但与非LBBB患者相似的恢复潜力.
- 这些发现支持当前的指导方针,建议在考虑设备植入之前推指导方针导向的医疗治疗.
- CMR可以识别特定的结构差异,但恢复率相似,影响治疗策略.
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