Background: This study aims to evaluate the predictive performance of the shock index (SI), modified SI (mSI), and Simplified Pulmonary Embolism Severity Index (sPESI) for intensive care unit (ICU) admission and 30-day mortality in patients presenting to the emergency department (ED) with pulmonary embolism (PE).Methods: A retrospective medical record review was conducted in the EDs of two hospitals in different cities. Records were reviewed, and patients diagnosed with PE in the ED were included. Patients’ SI, mSI, and sPESI were calculated, and they were divided into high- and low-risk groups based on their sPESI. The prognostic value of these parameters in predicting ICU admission and 30-day mortality was assessed using receiver operating characteristic (ROC) curves.Results: This study included 135 patients with a median age of 71.8 (22–95) years, of which 68 (50%) were female. While 38 (28%) were followed up in the ICU, 15 (11%) died within 30 days. Based on the sPESI, 38 were in the low-risk group and 97 in the high-risk group. Mortality was higher in the high-risk group, and no deaths occurred in the low-risk group. The SI, mSI, and sPESI were significantly higher among patients admitted to the ICU or who died. Conclusion: While the SI, mSI, and sPESI appear similar in predicting ICU admission and 30-day mortality, the mSI was more effective in predicting ICU admission, and the sPESI was more effective in predicting mortality.
Değirmenci et al. (Mon,) studied this question.