Purpose: The aim of the study was to assess the use of the Therapeutic Intervention Scoring System-28 (TISS-28) in surgical intensive care unit (ICU) patients and the relationship of the score to the type of surgery, severity of illness, and outcome in these patients.
Materials and methods: Prospectively collected data from all patients admitted to a postoperative ICU between March 1, 2004, and June 30, 2006, were analyzed retrospectively.
Results: A total of 6903 patients were admitted during the study period (63.5% male; mean age, 62.3 years) constituting 29 140 observation days. The mean Simplified Acute Physiology Score (SAPS) II, Sequential Organ Failure Assessment (SOFA), and TISS-28 scores on the day of ICU admission were 36.9 ± 18.2, 5.8 ± 3.9, and 43.2 ± 10.8, respectively. The highest admission TISS-28 was observed in patients who underwent cardiothoracic surgery (47.7 ± 10.1), the lowest in neurosurgical patients (40 ± 9.6), and both declined during the 2 weeks after ICU admission; however, in trauma patients and those admitted after gastrointestinal surgery, TISS scores increased gradually after the first 2 to 5 days in the ICU. The TISS-28 score was moderately correlated to SAPS II (R(2) = 0.42; P < .001) and SOFA score (R(2) = 0.48; P < .001) throughout the ICU stay and was consistently higher in nonsurvivors than in survivors during the first 2 weeks in the ICU.
Conclusions: There are marked variations in TISS-28 scores according to the type of surgery. Therapeutic Intervention Scoring System-28 correlates with the severity of illness and outcome in these patients.
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