Publication:

Impact of factors at admittance predicting intensive care unit mortality in critically ill cancer patients

Background The aim of this study is to evaluate the prognostic factors at medical ICU admittance predicting intensive care unit (ICU) mortality in cancer patients.

Methods Retrospectively data of adult patients admitted to medical ICU of a 1200-bed university hospital during January 2012-December 2013 interval were analysed. The patients were divided into three groups; patients with solid tumor, patients with hematologic malignancy and patients without cancer. The study end point was ICU mortality.

Results 512 patients were identified; 374 patients without cancer, 89 patients with solid tumor and 49 patients with hematologic malignancy. Overall mortality rate in intensive care unit was 46% (n=236). The ICU mortality rate of patients with hematologic malignancy was significantly higher than patients with solid tumors (68.6% vs 53%; p<0.001) and patients without cancer (68.6% vs 39.8%; p<0.001). Logistic regression analysis showed high APACHE II score and the requirement for invasive mechanical ventilation (odds ratio [OR], 5.52; 95% confidence interval [CI], 2.10-14.53; p<0.001) at the time of intensive care unit admittance as independent risk factors for increased mortality. In addition, the requirement of renal replacement therapy(OR, 2.34; [CI: 1.44-3.80]; p<0.002) and vasopressors(OR, 1.67; [CI: 1.10-2.54]; p<0.02)  at the time of intensive care unit admittance were detected as independent risk factors for increased mortality in cancer free group.

Conclusions In critically ill cancer patients; high APACHE II score and the requirement of invasive mechanical ventilation should be evaluated at the time of intensive care unit admittance, for these are strong predictors of increased mortality.