• M Raksakietisak, P Toomtong, P Vorakitpokatorn, A Sengleulur, and M Sunjohndee.
• Department of anesthesiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand. manee95@hotmail.com
• J Med Assoc Thai. 2006 May 1;89(5):648-56.

ObjectivesTo investigate the application of the Therapeutic Intervention Scoring System (TISS-28) and Sequential Organ Failure Assessment (SOFA) score to the surgical intensive care patients, and to find associated factors affecting length of stay (LOS).Material And MethodProspective data; from 1st July 2004 to 31st December 2004 at Siriraj Hospital. TISS-28 and SOFA and other data were recorded within the first 24 hours of ICU admission.ResultsAverage TISS-28 and SOFA values for patients who required >24 hr ICU stay were significantly different from those who required < 24 hr ICU stay (29.7 +/- 7.9 and 3.1 +/- 2.8 points versus 19.4 +/- 5.9 and 1.1 +/- 1.9 points, respectively p < 0.001). The other independent predictors of LOS > 24 hrs were ventilator support; vasoactive agents administration, central venous line insertion, emergency operation, renal dysfunction, and post-operative fever.ConclusionThe severity scores (TISS 28 and SOFA) can sufficiently demonstrate the workload and also the good predictors of ICU length of stay.

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