Sahu Nitasa, Yee Stephanie, Das Mukund, Trinh Shauna, Amoruso Robert, Connolly Mark, Rama Anil, Zuberi Jamshed
Internal Medicine, Penn State Hershey Medical Center, Hershey, USA.
Surgery, St. Joseph's University Medical Center, Paterson, USA.
Cureus. 2020 Apr 30;12(4):e7903. doi: 10.7759/cureus.7903.
Objective Shock index (SI) is defined as the heart rate divided by systolic blood pressure. Studies have shown a correlation between the shock index and mortality in trauma patients in prehospital settings and in the emergency department (ED). The objective of this study was to identify the utility of SI in predicting mortality in the medical intensive care unit (MICU) patients admitted from the ED and transfers from the floor to MICU. Design We performed a retrospective analysis of adult patients admitted to the MICU at our urban trauma hospital between January 2015 through August 2015 using ED vital signs to calculate the shock index and identify inpatient deaths. Similar data were examined for inpatient transfers to the MICU. Results Nine hundred and fifty patients were included in the study; 743 had an SI ≤ 0.99 with a mortality rate of 15.9%. Two hundred and seven patients had a SI ≥ 1.00 with a mortality rate of 22.7%. A higher SI was significant for mortality. There was no statistical significance in SI and mortality rate for patients transferred from the medical floor to the ICU. Conclusions Patients with an SI ≥ 1.00 from initial ED vital signs correlated with a higher mortality rate. In patients transferred from the floor to MICU, SI ≥ 1.00 did not correlate with a higher mortality rate.
目的 休克指数（SI）定义为心率除以收缩压。研究表明，在院前环境和急诊科（ED）中，休克指数与创伤患者的死亡率之间存在相关性。本研究的目的是确定SI在预测从ED收治以及从普通病房转入医学重症监护病房（MICU）的患者死亡率方面的效用。
设计 我们对2015年1月至2015年8月期间在我们城市创伤医院入住MICU的成年患者进行了回顾性分析，使用ED生命体征计算休克指数并确定住院死亡情况。对转入MICU的住院患者也检查了类似数据。
结果 950例患者纳入研究；743例患者的SI≤0.99，死亡率为15.9%。207例患者的SI≥1.00，死亡率为22.7%。较高的SI对死亡率有显著意义。从普通病房转入ICU的患者，SI与死亡率之间无统计学意义。
结论 初始ED生命体征显示SI≥1.00的患者与较高的死亡率相关。从普通病房转入MICU的患者中，SI≥1.00与较高的死亡率无关。
