A comparative study between confusion, urea, respiratory rate, blood pressure, age:65, pneumonia severity index/Port, and age, dehydration, respiratory failure, orientation, blood pressure score as predictors for intensive care unit admission and mor

Background Pneumonia that was contracted in a community setting or within 48 h after hospitalization was categorised as community acquired pneumonia (CAP). Aim To compare the predictive values of the three pneumonia severity scores confusion, urea, respiratory rate, blood pressure, age:65 (CURB-65), pneumonia severity index (PSI)/Port Score, and age, dehydration, respiratory failure, orientation, blood pressure (A-DROP) with the prognostic factors, mortality, and ICU admission rates of patients with CAP who presented to the emergency department. Patients and methods This prospective cross–section study included 90 patients over 18 years old, of both sexes, with CAP. CURB-65, PSI/Port, and A-DROP scores were recorded. Results There was a significant correlation ( P <0.05) between ICU admission rates and the CURB-65, PSI, and A-DROP scores. Mortality rate and CURB-65, PSI, and A-DROP scores were significantly positively correlated ( P <0.001). ICU admission rate and mortality rate of the three scores were insignificantly different from the actual rates. CURB-65, PSI score, and A-DROP score can significantly predict ICU admission rate respectively at cut-off greater than 2, greater than 90 and greater than 2 with 84.62, 89.74, and 97.44% sensitivity, 74.51, 96.08, and 80.93% specificity, 71.7 and 94.6%. CURB-65 score, PSI score, and A-DROP score can significantly predict mortality rate, respectively, at cut-off greater than 3, greater than 130 and greater than 3 with 89.47, 94.74, and 84.21% sensitivity, 88.73, 95.77, and 81.69% specificity. Conclusion In patients with CAP, the PSI, CURB-65, and A-DROP scores had a high sensitivity and specificity in predicting ICU admission and death.