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  • Title: Endocrine measurements in survivors and non-survivors from critical illness.
    Author: Ray DC, Macduff A, Drummond GB, Wilkinson E, Adams B, Beckett GJ.
    Journal: Intensive Care Med; 2002 Sep; 28(9):1301-8. PubMed ID: 12209281.
    Abstract:
    OBJECTIVE: To compare measurements of thyroid and adrenal function between survivors and non-survivors in critical illness. DESIGN AND SETTING: Prospective, observational study at the medical/surgical intensive care unit (ICU) at Royal Infirmary of Edinburgh, Scotland. PATIENTS: 163 patients admitted to the intensive care unit over a 4-month period. INTERVENTIONS: We took blood samples within 1 h of ICU admission, and at 08:00 hours on the subsequent 2 days of ICU admission. We measured serum total (TT(4)) and free (fT(4)) thyroxine, total (TT(3)) and free (fT(3)) tri-iodothyronine, thyrotropin (TSH) and plasma cortisol concentrations. MEASUREMENTS AND RESULTS: TT(3) and TT(4) concentrations were significantly less in non-survivors than in survivors on admission and on day 1 but not on day 2. Cortisol concentrations were higher in non-survivors on admission and on day 1 but not on day 2. TSH, fT(3) and fT(4) concentrations did not differ significantly between survivors and non-survivors at any time. Only TT(4) and cortisol were independent predictors of outcome. Prediction of outcome from the admission sample values was not better than using APACHE II scoring. CONCLUSIONS: Thyroid hormone and cortisol concentrations differ between survivors and non-survivors on admission to intensive care, but the values overlap. These differences do not allow accurate prediction of outcome from critical illness.
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