TY - JOUR
T1 - A population-based study of the association between coronary artery bypass graft surgery (CABG) and cognitive decline
T2 - The Cache County Study
AU - Lyketsos, Constantine G.
AU - Toone, Leslie
AU - Tschanz, Jo Ann
AU - Corcoran, Christopher
AU - Norton, Maria
AU - Zandi, Peter
AU - Munger, Ron
AU - Breitner, John C.S.
AU - Welsh-Bohmer, Kathleen
AU - Anthony, James
AU - Bigler, Erin
AU - Burke, James
AU - Green, Robert C.
AU - Klien, Liz
AU - Townsend, Jeannette J.
AU - Rabins, Peter V.
AU - Steinberg, Martin
AU - Østbye, Truls
AU - Pieper, Carl
AU - Plassman, Brenda
AU - Steffens, David C.
AU - Leslie, Carol
AU - Wyse, Bonita W.
AU - Williams, Michael
AU - Onyike, Chiadi U.
PY - 2006/6
Y1 - 2006/6
N2 - Background: The relationship between coronary artery bypass graft (CABG) surgery and cognitive decline remains uncertain, in particular with regard to whether there is delayed cognitive decline associated with this procedure. Methods: This was a population-based cohort study involving participants in the Cache County Study of Memory Health and Aging. At baseline the study enrolled 5,092 persons age 65 and older and followed them up three years later and again four years after that. Individuals who reported having undergone CABG surgery at study baseline or had this surgery in between follow-up waves were compared to individuals who never reported having the surgery. The main outcome measure was the Modified Mini Mental State (3MS). Multilevel models were used to examine the relationship between CABG surgery and cognitive decline over time. Results: Study participants who had CABG surgery evidenced 0.95 points of greater decline relative to baseline on the 3MS at the first follow-up interview after CABG, and an average of 1.9 points of greater decline at the second follow-up interview, than those without CABG (t = -2.51, df = 2,316, p = 0.0121), after adjusting for several covariates, including number of vascular conditions. This decline was restricted to individuals who were more than five years past the procedure and was not evident in the early years after the surgery. Conclusions: CABG surgery is associated with accelerated cognitive decline more than five years after the procedure in a long-lived population. This decline is small and its clinical significance is uncertain. We could not find an association between CABG and decline in the first five post-operative years.
AB - Background: The relationship between coronary artery bypass graft (CABG) surgery and cognitive decline remains uncertain, in particular with regard to whether there is delayed cognitive decline associated with this procedure. Methods: This was a population-based cohort study involving participants in the Cache County Study of Memory Health and Aging. At baseline the study enrolled 5,092 persons age 65 and older and followed them up three years later and again four years after that. Individuals who reported having undergone CABG surgery at study baseline or had this surgery in between follow-up waves were compared to individuals who never reported having the surgery. The main outcome measure was the Modified Mini Mental State (3MS). Multilevel models were used to examine the relationship between CABG surgery and cognitive decline over time. Results: Study participants who had CABG surgery evidenced 0.95 points of greater decline relative to baseline on the 3MS at the first follow-up interview after CABG, and an average of 1.9 points of greater decline at the second follow-up interview, than those without CABG (t = -2.51, df = 2,316, p = 0.0121), after adjusting for several covariates, including number of vascular conditions. This decline was restricted to individuals who were more than five years past the procedure and was not evident in the early years after the surgery. Conclusions: CABG surgery is associated with accelerated cognitive decline more than five years after the procedure in a long-lived population. This decline is small and its clinical significance is uncertain. We could not find an association between CABG and decline in the first five post-operative years.
KW - CABG
KW - Cognitive decline
KW - Coronary artery bypass surgery
KW - Dementia
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U2 - 10.1002/gps.1502
DO - 10.1002/gps.1502
M3 - Article
C2 - 16645936
AN - SCOPUS:33745917048
SN - 0885-6230
VL - 21
SP - 509
EP - 518
JO - International journal of geriatric psychiatry
JF - International journal of geriatric psychiatry
IS - 6
ER -