Sepsis and septic shock

败血症 医学 重症监护医学 感染性休克 全身炎症反应综合征 全身炎症 炎症 免疫学
作者
Richard S. Hotchkiss,Lyle L. Moldawer,Steven M. Opal,Konrad Reinhart,Isaiah R. Turnbull,Jean‐Louis Vincent
出处
期刊:Nature Reviews Disease Primers [Nature Portfolio]
卷期号:2 (1) 被引量:1300
标识
DOI:10.1038/nrdp.2016.45
摘要

For more than two decades, sepsis was defined as a microbial infection that produces fever (or hypothermia), tachycardia, tachypnoea and blood leukocyte changes. Sepsis is now increasingly being considered a dysregulated systemic inflammatory and immune response to microbial invasion that produces organ injury for which mortality rates are declining to 15–25%. Septic shock remains defined as sepsis with hyperlactataemia and concurrent hypotension requiring vasopressor therapy, with in-hospital mortality rates approaching 30–50%. With earlier recognition and more compliance to best practices, sepsis has become less of an immediate life-threatening disorder and more of a long-term chronic critical illness, often associated with prolonged inflammation, immune suppression, organ injury and lean tissue wasting. Furthermore, patients who survive sepsis have continuing risk of mortality after discharge, as well as long-term cognitive and functional deficits. Earlier recognition and improved implementation of best practices have reduced in-hospital mortality, but results from the use of immunomodulatory agents to date have been disappointing. Similarly, no biomarker can definitely diagnose sepsis or predict its clinical outcome. Because of its complexity, improvements in sepsis outcomes are likely to continue to be slow and incremental. Sepsis is the dysregulated systemic inflammatory and immune response to infection that produces organ injury. Septic shock is characterized by persistent hypotension that substantially increases the risk of death. In this Primer, the authors outline the controversies in sepsis and septic shock, including the complex mechanistic factors and management of critically ill patients.
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