Articles: intensive-care-units.
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Comparative Study
Mortality differences and speed of wound closure among specialized burn care facilities.
Burn patient mortality rates at 11 major American burn care units were investigated and were found to differ substantially after carefully adjusting for patient mix at each participating burn facility. The adjusted mortality rates differed by as much as a factor of two. Institution speed of full-thickness burn wound closure was found to be significantly associated with mortality experience, with lower mortality associated with quicker wound closure. The data analyzed were from the National Burn Information Exchange (12,000 cases).
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To establish guidelines for the interpretation of changes in arterial blood gas (ABG) values, we studied 29 clinically stable ICU patients for spontaneous variability in PaO2, PaCO2 and pH. ABGs were sampled six times over a 50-minute period, during which all patients received a fixed FIO2 of 0.5 via endotracheal tube and underwent no therapeutic interventions. Each sample was analyzed in duplicate with careful attention to method of collection and measurement. ⋯ Various clinical features were analyzed by multiple regression analysis for their relation to PaO2 variation. Only leukocyte count and mean arterial oxygen content were statistically significant associations (p less than 0.05), but together explained less than 35 percent of the variation observed. Because considerable spontaneous variation occurs, even in stable patients, clinicians should base therapeutic decisions on trends in PaO2 values rather than on isolated changes interpreted without appropriate clinical correlation.