To investigate the prognostic value of PSI, APACHEⅡ and SOFA scores in patients with hospital-acquired pneumonia and the effect of age on the efficacy of SOFA score.

The data of 80 patients with hospital-acquired pneumonia admitted in our hospital from January 2016 to December 2017 were retrospectively analyzed. Among them, 40 had non-perioperative hospital-acquired pneumonia and 40 had perioperative hospital-acquired pneumonia. Each group was evaluated by the PSI, APACHEⅡand SOFA scores with the worst physiological parameters within 24 hours after confirmed diagnosis of hospital-acquired pneumonia. Using the survival rate after 30 days as a prognostic index, the operating characteristic curves (ROCs) of the receivers were drawn to compare the difference of the three scores. On the basis of APACHEⅡ age scores, SOFA scores were re-graded to compare the effect of SOFA scores before and after age-weighting.

ROC analysis showed that the three scores could predict the 30-day mortality of hospital-acquired pneumonia. For the 40 cases of non-perioperative hospital-acquired pneumonia, the areas under the curve (AUCs) of ROC in PSI, APACHEⅡ and SOFA were 0.75, 0.69 and 0.66, respectively. And for the 40 cases of perioperative hospital-acquired pneumonia, the AUCs in PSI, APACHEⅡ and SOFA were 0.87, 0.64 and 0.70, respectively. And for the 80 cases of hospital-acquired pneumonia, the AUCs in PSI, APACHEⅡ and SOFA were 0.80, 0.73 and 0.66, respectively. After age-weighting of the SOFA scores, the AUC of the 40 cases of non-perioperative hospital-acquired pneumonia was 0.75, the AUC of the 40 cases of perioperative hospital-acquired pneumonia was 0.75, and the AUC of the 80 cases of hospital-acquired pneumonia was 0.72.

The efficacy of PSI is better than that of APACHEⅡ and SOFA regardless of whether the patient is in surgery, and the efficacy of SOFA score is increased after age-weighting.