Comparison of clinical parameters with APACHE-II, Sequential Organ Failure Assessment and Clinical Pulmonary Infection Score scores in predicting treatment outcome of patients with ventilator associated pneumonia

Background: The objective of this study was to study the multiple clinical parameters in patients with VAP and to compare the 3 scores namely, APACHE II, SOFA and CPIS in predicting the treatment outcome of patients with ventilator associated pneumonia.Methods: It was a cross sectional observational study conducted on forty patients admitted in ICU between June 2018 and July 2019, who developed VAP after admission to ICU. Logistic regression analysis was applied to estimate the predictive ability of the APACHE II, SOFA and CPIS scoring systems in assessing VAP-related mortality. A p value of <0.05 was considered significant. All analyses were performed using SPSS software version 10.Results: The sample size in our study was 40 patients. The mean age of patients was 43.4±15.9. The mean duration of mechanical ventilation before VAP onset was 8±2 days. Klebsiella species was the most common organism isolated from ET aspirate. Of the three scores only APACHE II was independent predictor of the mortality in the logistic regression analysis.Conclusions: APACHE II score is better at predicting mortality in patients with VAP as compared to SOFA and CPIS scores. Age, co-morbidities, duration of ICU stay, time of acquiring VAP, multi organ dysfunction, need for ionotropes and multi drug resistant organisms play an important role in predicting the outcome of patients.