保护性血流动力学研究进展

Progress in Protective Hemodynamics Research

摘要: 保护性血流动力学是针对循环休克、败血症等危重症发展而来的诊疗策略，与传统血流动力学单纯追求宏观参数“正常化”不同，其核心在于通过个体化、精细化的干预手段优化血流灌注，保护心脑肾等重要器官功能，进而改善患者的远期预后。血压与组织灌流并非线性关系，血压仅是维持组织灌注的必要非充分条件，而灌注的有效性则依赖于血压与微循环结构、血流流变特性的动态匹配，因此需要结合多模态监测制定个体化管理方案。大剂量使用缩血管药物(如去甲肾上腺素、去氧肾上腺素等)可能导致器官缺血、死亡率升高等风险，临床实践中需严格控制药物剂量并明确适用场景。保护性血流动力学的调控核心靶点包括肾上腺素能、胆碱能等受体，受体的分布特异性决定了药物的作用效应。目前该领域仍存在微循环改善与患者预后的关联等争议问题，临床需基于多模态监测实施精准化管理，未来还需进一步探索相关机制并研发新型治疗策略。

Abstract: Protective hemodynamics is a diagnostic and therapeutic strategy developed for critical illnesses such as circulatory shock and sepsis. Unlike traditional hemodynamics that merely pursues the “normalization” of macroparameters, its core lies in optimizing blood perfusion through individualized and refined interventions, protecting the functions of vital organs including the heart, brain, and kidneys, thereby improving patients’ long-term prognosis. Blood pressure and tissue perfusion do not have a linear relationship; blood pressure is only a necessary but not sufficient condition for maintaining tissue perfusion. The effectiveness of perfusion depends on the dynamic matching between blood pressure, microcirculatory structure, and hemorheological properties. Therefore, it is necessary to formulate individualized management plans combined with multimodal monitoring. High-dose use of vasoconstrictor drugs (such as norepinephrine, phenylephrine, etc.) may lead to risks such as organ ischemia and increased mortality. In clinical practice, strict control of drug doses and clarification of applicable scenarios are required. The core regulatory targets of protective hemodynamics include adrenergic receptors, cholinergic receptors, etc., and the distribution specificity of receptors determines the therapeutic effects of drugs. Currently, there are still controversial issues in this field, such as the association between microcirculatory improvement and patient prognosis. Clinically, precision management should be implemented based on multimodal monitoring. In the future, further exploration of the underlying mechanisms and development of novel therapeutic strategies are needed.