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[脓毒症性心肌病]

[SEPTIC CARDIOMYOPATHY].

作者信息

Vincelj J

出版信息

Acta Med Croatica. 2015 Sep;69(3):177-82.

Abstract

Septic cardiomyopathy is a reversible myocardial dysfunction in patients with sepsis. Depression in myocardial contractility is detected in more than 40% of patients with severe sepsis or septic shock. Sepsis-induced myocardial dysfunction (SIMD) is one of the main predictors of poor outcome in patients with sepsis. Mortality rate in patients with sepsis and SIMD is 70%-90%, while it is only 20% in patients without SIMD. SIMD is characterized by ventricular dilatation, decreased ejection fraction, less response to fluid replacement and catecholamines. It is reversible within 7-10 days. Many extracellular and intracellular mechanisms and mediators included in the regulation of the heart muscle cell contraction may contribute to septic cardiomyopathy. The underlying cause is disorder in communication between the intracellular contractile apparatus and extracellular matrix, resulting in attenuation of the myocardial contraction. Hemodynamic monitoring, ECG, transthoracic and transesophageal echocardiography, and various laboratory tests are used in the diagnostic work-up. There are several therapeutic interventions such as infection control, optimization of hemodynamic parameters, adequate volume resuscitation, inotropic drugs, transfusion of blood derivatives, and statins. However, for now, there is no efficient therapy for septic cardiomyopathy. The management of SIMD includes cardio-protective therapy, etiologic treatment of sepsis and septic shock, and supportive measures.

摘要

脓毒症性心肌病是脓毒症患者中一种可逆转的心肌功能障碍。在超过40%的严重脓毒症或脓毒性休克患者中可检测到心肌收缩力下降。脓毒症诱导的心肌功能障碍(SIMD)是脓毒症患者预后不良的主要预测因素之一。伴有SIMD的脓毒症患者死亡率为70%-90%,而无SIMD的患者死亡率仅为20%。SIMD的特征为心室扩张、射血分数降低、对液体复苏和儿茶酚胺反应性降低。它在7-10天内可逆转。心肌细胞收缩调节中涉及的许多细胞外和细胞内机制及介质可能导致脓毒症性心肌病。其根本原因是细胞内收缩装置与细胞外基质之间的通讯紊乱,导致心肌收缩减弱。血流动力学监测、心电图、经胸和经食管超声心动图以及各种实验室检查用于诊断评估。有多种治疗干预措施,如控制感染、优化血流动力学参数、充分的容量复苏、使用正性肌力药物、输注血液制品以及使用他汀类药物。然而,目前对于脓毒症性心肌病尚无有效的治疗方法。SIMD的管理包括心脏保护治疗、脓毒症和脓毒性休克的病因治疗以及支持措施。

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