PMID- 29754693 OWN - NLM STAT- MEDLINE DCOM- 20190820 LR - 20190820 IS - 1552-6259 (Electronic) IS - 0003-4975 (Linking) VI - 106 IP - 2 DP - 2018 Aug TI - Preoperative 6-Minute Walk Distance Is Associated With Postoperative Cognitive Dysfunction. PG - 505-512 LID - S0003-4975(18)30438-7 [pii] LID - 10.1016/j.athoracsur.2018.03.010 [doi] AB - BACKGROUND: Postoperative cognitive dysfunction (POCD) is a neurologic dysfunction that occurs after surgery. POCD persists for a long period, ranging from weeks to months, and affects a patient's quality of life. A 6-minute walk distance (6MWD) has been used to predict postoperative complications after several operations. The present study investigated whether there was an independent association of a low preoperative 6MWD with POCD in patients who underwent cardiac operations. METHODS: The study included 181 patients who underwent a cardiac operation. The 6MWD was performed prospectively on admission for the operation. POCD was defined as a decrease of 2 points or more in a patient's Mini-Mental State Examination score. POCD developed in 51 (28%) of these patients. Patients were categorized into a POCD or a non-POCD group, and the perioperative variables were compared between the groups. Multivariable logistic regression analysis was performed to identify risk factors for the development of POCD. RESULTS: The patients were a mean age of 71.4 years. The POCD group showed a significantly lower 6MWD (median, 400 m) than the non-POCD group (median, 450 m). The 6MWD, intensive care unit length of stay, age, and Mini-Mental State Examination score were identified as independent risk factors for POCD by multivariable analysis. The odds ratio for each increase of 50 m in the 6MWD was 0.807 for POCD. CONCLUSIONS: The 6MWD is useful in identifying patients with a higher chance of developing POCD after a cardiac operation. CI - Copyright (c) 2018 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved. FAU - Hayashi, Kazuhiro AU - Hayashi K AD - Department of Rehabilitation, Nagoya University Hospital, Nagoya, Japan; Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan; Department of Rehabilitation, Aichi Medical University, Nagakute, Japan. Electronic address: hayashi.kzhr@gmail.com. FAU - Oshima, Hideki AU - Oshima H AD - Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Shimizu, Miho AU - Shimizu M AD - Department of Rehabilitation, Nagoya University Hospital, Nagoya, Japan. FAU - Kobayashi, Kiyonori AU - Kobayashi K AD - Department of Rehabilitation, Nagoya University Hospital, Nagoya, Japan. FAU - Matsui, Shigeyuki AU - Matsui S AD - Department of Biostatics, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Nishida, Yoshihiro AU - Nishida Y AD - Department of Rehabilitation, Nagoya University Hospital, Nagoya, Japan; Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Usui, Akihiko AU - Usui A AD - Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan. LA - eng PT - Journal Article DEP - 20180510 PL - Netherlands TA - Ann Thorac Surg JT - The Annals of thoracic surgery JID - 15030100R MH - Age Factors MH - Aged MH - Aged, 80 and over MH - Analysis of Variance MH - Cardiac Surgical Procedures/*adverse effects/*methods MH - Cognitive Dysfunction/epidemiology/etiology/*physiopathology MH - Cohort Studies MH - Exercise Test/*methods MH - Female MH - Humans MH - Male MH - Middle Aged MH - Multivariate Analysis MH - Odds Ratio MH - Postoperative Complications/epidemiology/physiopathology MH - Preoperative Care/methods MH - Prognosis MH - Retrospective Studies MH - Risk Assessment MH - Sex Factors MH - *Walking EDAT- 2018/05/15 06:00 MHDA- 2019/08/21 06:00 CRDT- 2018/05/15 06:00 PHST- 2017/08/05 00:00 [received] PHST- 2018/02/18 00:00 [revised] PHST- 2018/03/05 00:00 [accepted] PHST- 2018/05/15 06:00 [pubmed] PHST- 2019/08/21 06:00 [medline] PHST- 2018/05/15 06:00 [entrez] AID - S0003-4975(18)30438-7 [pii] AID - 10.1016/j.athoracsur.2018.03.010 [doi] PST - ppublish SO - Ann Thorac Surg. 2018 Aug;106(2):505-512. doi: 10.1016/j.athoracsur.2018.03.010. Epub 2018 May 10.