28 May 2017 : Clinical Research
Association Between ABO Blood Type and Postoperative Cognitive Dysfunction in Elderly Patients Undergoing Unilateral Total Hip Arthroplasty Surgery in ChinaJie Li1ABCD, Jun Zhou1BCDE, Yunqiang Wan1ACE, Li Liu1ABDF, Cehua Ou1ABE*
Med Sci Monit 2017; 23:2584-2589
BACKGROUND: Postoperative cognitive dysfunction (POCD) is a postoperative complication after surgery and anesthesia. Whether ABO blood types are associated with POCD in elderly patients undergoing unilateral total hip arthroplasty surgery in China is unclear.
MATERIAL AND METHODS: Firstly, 142 elderly patients were divided into a POCD group and a non-POCD group according to the Mini Mental State Examination (MMSE) scores and ABO blood types were analyzed. Secondly, according to ABO blood type, the selected 226 patients were divided into 4 groups: type A group, type B group, type AB group, and type O group. Then, all patients completed the MMSE before and after surgery. Finally, the occurrence of POCD was recorded and related data were analyzed.
RESULTS: Firstly, there was a significant difference in both groups in terms of distribution of ABO blood types, and elderly patients who developed POCD were more likely to have type A blood and less likely to have type O blood. Secondly, compared with elderly patients with type A blood, those with type O had higher MMSE scores on the first day and the seventh day after surgery. Finally, the risk of developing POCD was significantly higher in patients with type A blood and on the first day and the seventh day after surgery the risk of developing POCD was significantly lower in patients with type O blood.
CONCLUSIONS: Elderly patients with type A blood have higher risk of developing early POCD and those with type O blood have less risk of developing early POCD.
Keywords: ABO Blood-Group System, Cognitive Dissonance, Frail Elderly
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