在大动脉置换手术中,我们是否正确计算心脏的剂量? 一份初步报告
Aleksandra Sucharska1, Agnieszka Adamowska1, Zuzanna Karbowska1
1Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, Poznan, Poland.
概括
在大动脉置换过程中,优化心损伤体积指数为左心室质量,可以改善心肌保护和长期存活. 标准人体质量计算可能不足以实现有效的患者治疗结果.
科学领域:
- 心脏病学 心脏病学
- 心脏外科手术 心脏外科手术
- 通过心肺绕道术 (cardiopulmonary bypass) 进行心肺绕道.
背景情况:
- 在患有大动脉狭窄症 (AS) 的患者中,术内心肌保护对于成功进行大动脉置换 (AVR) 是至关重要的.
- 目前的心脏的剂量通常依赖于患者的体重,这种方法的普遍适用性受到质疑.
研究的目的:
- 评估基于体质的标准心脏的剂量是否对所有接受AVR的AS患者来说是最佳的.
- 调查指数化心体积,心肌损伤和AVR后的长期存活率之间的关系.
主要方法:
- 研究了94名接受选择性隔离AVR和冷心性心脏骤停的患者.
- 患者被分为高 (中位数以上) 和低 (中位数以下) 心体积组,以左心室质量 (LVM) 进行索引.
- 心肌损伤的评估是通过最大的术后心脏托罗邦素I (cTnI max) 释放;使用卡普兰-梅尔方法分析了长期存活率.
主要成果:
- 较高的指数心体积与较低的cTnI最大水平相关 (r = 0.345).
- 与B组 (低体积) 相比,A组 (高心脏体积) 的cTnImax显着较低 (中位数:14.918对比9.876μg/l;p=0.005).
- 五年生存率在高体积组 (95.7%) 与低体积组 (82.6%;p = 0.044) 相比显著更好.
结论:
- 在AVR中仅依靠身体质量来确定心脏的剂量可能是不理想的.
- 调整心脏体积以左心室质量为指数,可以增强心肌保护.
- 优化心肌的策略显著影响手术后的结果和AS患者的长期存活.
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