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低级血液稀释可以改善手术患者的微循环功能

Robert G Hahn¹, Katerina Tlapakova², Hana Koudelova²

¹Karolinska Institutet at Danderyds Hospital (KIDS), Stockholm, Sweden.

Microvascular research

|December 31, 2024

概括

逐渐的血稀释至15%与晶体液改善了微循环和增加了毛细血管过. 较高的稀释对这些变量产生了负面影响,影响了手术患者.

科学领域:

身体生理学身体生理学
密集护理医学密集护理医学
手术流体管理手术流体管理

背景情况:

过多的间歇性液体可能会损害微循环.
晶体液体的使用在外科手术中很常见.
了解液体稀释对微循环的影响至关重要.

研究的目的:

通过结晶体输液逐渐稀释等离子体对微循环变量的影响.
为了评估毛细血管过率的变化,以应对血稀释.
为了确定手术患者的最佳液体稀释水平.

主要方法:

语言下微循环的视频记录.
使用体积动力学数据,准测量了毛细血管过率.
对20名手术患者进行的262个输液实验的分析.

主要成果:

血管密度增加到15-20%的血稀释,然后下降.
透血管 (PPV) 的比例在20-30%的稀释下降至15%.
毛细管过超过了体积膨胀预测,达到15%的稀释.

结论:

高达15%的血稀释对血管密度和毛细血管过产生了积极影响.
超过15%的稀释表明对微循环变量有不良影响.
谨慎的流体管理是必要的,以避免在手术期间对微循环产生负面影响.

关键词:

结晶化物流体的流体.微血管密度微血管密度药理动力学药理动力学血稀释的等离子体稀释

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