Cognitive dysfunction after inhalation versus intravenous anesthesia in elderly patients

摘要

We would like to acknowledge the contribution of Cai etal. in their January 2012 publication "Association between apo-lipoprotein E4 and postoperative cognitive dysfunction in elderly patients undergoing intravenous anesthesia and inhalation anesthesia."1 Prospective studies in this realm are sorely lacking, and a study of this magnitude is indeed an achievement. However, we do have some questions about the metliodology and external validity of their findings.