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• W2052803569 abstract "Patients with subarachnoid hemorrhage (SAH) frequently develop delayed cerebral ischemia and may be especially vulnerable to the effects of anemia. However, the potentially harmful effects of allogeneic red blood cells are increasingly being recognized. The optimal transfusion threshold is unknown, but current practice most often uses a liberal approach. We assessed the association between anemia or transfusion and subsequent adverse outcomes.Retrospective cohort study.Neuroscience intensive care unit of a university hospital.A total of 245 consecutive patients with aneurysmal SAH.None.Logistic regression models were used to adjust for baseline differences in age, severity of neurologic impairment, and amount of blood on computed tomography. Patients were dichotomized based on whether symptomatic vasospasm was diagnosed.Individually, anemia (nadir hemoglobin <10 g/dL) and the use of transfusions were both associated with the combined outcome of death, severe disability, or delayed infarction (odds ratio [OR] for anemia, 2.7; 95% confidence interval [CI] 1.5-5; p < .01; OR for transfusion, 4.8; 95% CI, 2.5-9.1; p < .01). When both variables were together introduced into a logistic regression model, only transfusion remained significantly predictive (OR, 4.3; 95% CI, 1.5-9.3; p < .01). The relationship between anemia and adverse outcomes was stronger among patients diagnosed with vasospasm, whereas for transfusion, it was stronger among patients without vasospasm. Transfusion also was associated with the development of nosocomial infections (OR, 3.2; 95% CI, 1.7-5.5; p < .01). There was no statistically significant difference in complications based on the duration of blood storage before transfusion.Although anemia is predictive of adverse outcomes in patients with SAH, this observation cannot be considered justification for a liberal transfusion strategy. Appropriate transfusion thresholds may vary depending on the presence or absence of clinical vasospasm. Randomized trials that compare liberal and restrictive transfusion strategies in patients with SAH are needed." @default.
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• W2052803569 date "2008-07-01" @default.
• W2052803569 modified "2023-10-01" @default.
• W2052803569 title "Complications associated with anemia and blood transfusion in patients with aneurysmal subarachnoid hemorrhage" @default.
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• W2052803569 doi "https://doi.org/10.1097/ccm.0b013e31817c1095" @default.
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