PMID- 23274780 OWN - NLM STAT- MEDLINE DCOM- 20130730 LR - 20180126 IS - 1471-6771 (Electronic) IS - 0007-0912 (Linking) VI - 110 Suppl 1 DP - 2013 Jun TI - Is postoperative cognitive dysfunction a risk factor for dementia? A cohort follow-up study. PG - i92-7 LID - 10.1093/bja/aes466 [doi] AB - BACKGROUND: Postoperative cognitive dysfunction (POCD) is a common complication in elderly patients after major surgery. An association between POCD and the development of dementia has been suspected. In this study, we assessed if POCD was a risk factor for the occurrence of dementia. METHODS: Danish patients enrolled between November 1994 and October 2000 in the two International Studies of Postoperative Cognitive Dysfunction (ISPOCD 1 and 2) were followed until July 1, 2011. Cognitive performance was assessed at three time points: before operation, at 1 week, and 3 months after surgery, using a neuropsychological test battery. The time of (first) occurrence of dementia after surgery was assessed using the National Patient Register and the Psychiatric Central Research Register. Recorded dementia diagnoses (ICD-8 and ICD-10) were: Alzheimer's disease, vascular dementia, frontotemporal dementia, or dementia without specification. The risk of dementia according to POCD was assessed in the Cox regression models. RESULTS: A total of 686 patients with a median age of 67 [inter-quartile range (IQR) 61-74] yr were followed for a median of 11.1 (IQR 5.2-12.6) yr. Only 32 patients developed dementia during follow-up. The hazard ratio (95% CI) for any dementia diagnoses in patients with POCD at 1 week (n=118) and POCD at 3 months (n=57) after surgery compared with those without POCD was 1.16 (0.48-2.78), P=0.74, and 1.50 (0.51-4.44); P=0.47, respectively. CONCLUSIONS: POCD was not significantly associated with registered dementia over a median follow-up of 11 yr. FAU - Steinmetz, J AU - Steinmetz J AD - Department of Anaesthesia, Center of Head and Orthopaedics, HOC 4231, Copenhagen University Hospital, Rigshospitalet, DK-2100 Copenhagen, Denmark. jacobsteinmetz@dadlnet.dk FAU - Siersma, V AU - Siersma V FAU - Kessing, L V AU - Kessing LV FAU - Rasmussen, L S AU - Rasmussen LS CN - ISPOCD Group LA - eng PT - Journal Article PT - Multicenter Study DEP - 20121228 PL - England TA - Br J Anaesth JT - British journal of anaesthesia JID - 0372541 SB - IM MH - Adult MH - Aged MH - Cognition Disorders/diagnosis/epidemiology/etiology/*psychology MH - Dementia/epidemiology/*etiology MH - Denmark/epidemiology MH - Depression/epidemiology/etiology MH - Female MH - Follow-Up Studies MH - Humans MH - Male MH - Middle Aged MH - Neuropsychological Tests MH - Postoperative Complications/diagnosis/epidemiology/*psychology MH - Postoperative Period MH - Risk Factors OTO - NOTNLM OT - dementia OT - postoperative cognitive dysfunction OT - postoperative complications EDAT- 2013/01/01 06:00 MHDA- 2013/07/31 06:00 CRDT- 2013/01/01 06:00 PHST- 2013/01/01 06:00 [entrez] PHST- 2013/01/01 06:00 [pubmed] PHST- 2013/07/31 06:00 [medline] AID - S0007-0912(17)32653-3 [pii] AID - 10.1093/bja/aes466 [doi] PST - ppublish SO - Br J Anaesth. 2013 Jun;110 Suppl 1:i92-7. doi: 10.1093/bja/aes466. Epub 2012 Dec 28.