Anemia Clinical Trial
Official title:
The Impact of Perioperative Restrictive Transfusion on Postoperative Cognitive Dysfunction in Elderly Patients Undergoing Spine Surgery
Although blood transfusion is a representative treatment for acute anemia due to blood loss during surgery, it is also a powerful risk factor for postoperative cognitive dysfunction. 'Restrictive transfusion', which transfusions minimal red blood cells, is not only useful for conserving limited blood resources, but also does not worsen prognosis or mortality after surgery. Research has also been reported that severe restrictive transfusion has improved prognosis and mortality. However, anemia is also one of the risk factors for postoperative complications, including neurocognitive impairment, it is still controversial how much anemia should be allowed in elderly people who are sensitive to ischemia or heart disease. The purpose of this study is to determine whether the restrictive transfusion policy reduces the frequency of postoperative cognitive dysfunction than the liberal transfusion policy in patients aged 65 years or older who undergo lumbar interbody fusion. Restrictive transfusion strategy (which initiates transfusion when hemoglobin level is less than 8 g / dL during perioperative period) // liberal transfusion strategy (which initiates transfusion when hemoglobin level is less than 10 g / dL during perioperative period)
The Aim of this study was to compare the frequency of postoperative cognitive dysfunction diagnosed 7 days after surgery between two groups. K-MOCA (Korean-Montreal Cognitive Assessment) is used to evaluate cognitive dysfunction. In addition, plasma inflammatory markers (CRP, IL-6) and GFAP reflecting brain damage were measured before and after surgery to determine whether brain injury caused by systemic inflammatory response is associated with cognitive dysfunction ;
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