对心磁共振进行视觉评估的缺血,但不是定量输液指标,预测冠状动脉绕道术的症状改善
Tamim Akbari1, Lukas Mach2, Daniel J Hammersley3
1Royal Brompton and Harefield Hospitals, part of Guy's and St Thomas' NHS Foundation Trust, London, UK; National Heart and Lung Institute, Imperial College London, UK. Electronic address: https://twitter.com/tamimakbari1.
概括
系列心血管磁共振 (CMR) 显示冠状动脉旁路移植 (CABG) 后视觉缺血减少与改善症状相关. 对心肌血流量进行的定量测量没有与症状缓解有联系.
科学领域:
- 心脏病学
- 医学成像
- 心脏外科
背景情况:
- 经过冠状动脉旁路移植 (CABG) 的有症状的患者经常出现动态心肌异常.
- 连续输液心血管磁共振 (CMR) 提供了这些变化的洞察力.
研究的目的:
- 评估心脏再输血,重塑和CABG后症状改善之间的关联.
- 在CABG后使用CMR评估心肌输液的变化.
主要方法:
- 40名患者接受了连续的CMR (基线和CABG后6-12个月) 和生活质量调查问卷.
- 评估了自动定量应激/休息心肌血流 (MBF) 和视觉缺血负担.
- 这些发现与症状变化相关 (SAQ-7分).
主要成果:
- 在CABG后,视力缺血负荷 (42%至18%) 和心肌 perfusion 储量 (1.85至2. 4) 显著改善.
- 在SAQ-7得分的更大改善与视力缺血负担的更大降低相关 (ρ=- 0.38,P=0.02).
- 量化MBF指标与症状改善没有关联.
结论:
- 序列输液CMR有效地识别了CABG后心肌输液的动态变化.
- 在CABG后视觉评估缺血减少与患者报告的症状改善有关.
- 量化输液指数需要进一步研究它们在CABG后症状改善中的作用.
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