We conducted a large retrospective study to investigate the confounding factors that predict Ce ROC under propofol-based TIVA with TCI. We recorded sex, age, height, weight, Ce LOC, Ce ROC, total propofol and fentanyl consumption dose, and anesthetic time. Simple linear regression models were used to identify potential predictors of Ce ROC, and multiple linear regression models were used to identify the confounding predictors of Ce ROC. We found that Ce ROC correlated with age, sex, Ce LOC, and both total fentanyl and propofol consumption dose. The prediction formula was: Ce ROC = 0.87 - 0.06 × age + 0.18 × Ce LOC + 0.04 (if fentanyl consumption > 150 μg; if not, ignore this value) + 0.07 × (1 or 2, according to the total propofol consumption dose, 1 for a propofol amount 1000-2000 mg and 2 for a propofol amount > 2000 mg). We simplified the formula further as Ce ROC = 0.87 - 0.06 × age + 0.18 × Ce LOC. In conclusion, Ce ROC can be predicted under TCI with propofol- and fentanyl-based TIVA. The confounding factors that predicted propofol Ce ROC are age, sex, Ce LOC, and total consumption dose of propofol and fentanyl.
Aneurysmal subarachnoid hemorrhage (aSAH) is a serious and debilitating condition that leads to the development of many complications, which are followed by mortality and morbidity. As anesthesiologists, we may require to manage aSAH at various settings such as in the perioperative period or in a nonoperative setting such as the neuroradiology suite for diagnostic and therapeutic interventions. Therefore, it is important to understand the pathophysiology of aSAH and anesthetic management for operations and interventions. For decades, early brain injury and cerebral vasospasm have played major roles in the outcome following aSAH. The purpose of this article is to review recent advances and future perspectives in the treatment of aSAH, early brain injury, and cerebral vasospasm.
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