TY - JOUR

T1 - Cognitive Dysfunction After Fast-Track Hip and Knee Replacement

AU - Krenk, Lene

AU - Kehlet, Henrik

AU - Bæk Hansen, Torben

AU - Solgaard, Søren

AU - Soballe, Kjeld

AU - Rasmussen, Lars Simon

PY - 2014

Y1 - 2014

N2 - BACKGROUND: Postoperative cognitive dysfunction (POCD) is reported to occur after major surgery in as many as 20% of patients, elderly patients may especially experience problems in the weeks and months after surgery. Recent studies vary greatly in methods of evaluation and diagnosis of POCD, and the pathogenic mechanisms are still unclear. We evaluated a large uniform cohort of elderly patients in a standardized approach, after major joint replacement surgery (total hip and knee replacement). Patients were in an optimized perioperative approach (fast track) with multimodal opioid-sparing analgesia, early mobilization, and short length of stay (LOS ≤3 days) and discharged to home.METHODS: In a prospective multicenter study, we included 225 patients aged ≥60 years undergoing well-defined fast-track total hip or total knee replacement. Patients had neuropsychological testing preoperatively and 1 to 2 weeks and 3 months postoperatively. LOS, pain, opioid use, inflammatory response, and sleep quality were recorded. The practice effect of repeated cognitive testing was gauged using data from a healthy community-dwelling control group (n = 161).RESULTS: Median LOS was 2 days (interquartile range 2-3). The incidence of POCD at 1 to 2 weeks was 9.1% (95% confidence interval [CI], 5.4%-13.1%) and 8.0% (95% CI, 4.5%-12.0%) at 3 months. There was no statistically significant difference between patients with and without early POCD, regarding pain, opioid use, sleep quality, or C-reactive protein response, although the CIs were wide. Patients with early POCD had a higher Mini Mental State Examination score preoperatively (difference in medians 0.5 [95% CI, -1.0% to 0.0%]; P = 0.034). If there was an association between early POCD and late POCD, the sample size was unfortunately too small to verify this (23.6% of patients with early POCD had late onset vs 6.7% in non-POCD group; risk difference 16.9 (95% CI, -2.1% to 41.1%; P = 0.089).CONCLUSIONS: The incidence of POCD early after total hip and knee replacement seems to be lower after a fast-track approach than rates previously reported for these procedures, but late POCD occurred with an incidence similar to that in previous studies of major noncardiac elective surgery. No association between early and late POCD could be verified.

AB - BACKGROUND: Postoperative cognitive dysfunction (POCD) is reported to occur after major surgery in as many as 20% of patients, elderly patients may especially experience problems in the weeks and months after surgery. Recent studies vary greatly in methods of evaluation and diagnosis of POCD, and the pathogenic mechanisms are still unclear. We evaluated a large uniform cohort of elderly patients in a standardized approach, after major joint replacement surgery (total hip and knee replacement). Patients were in an optimized perioperative approach (fast track) with multimodal opioid-sparing analgesia, early mobilization, and short length of stay (LOS ≤3 days) and discharged to home.METHODS: In a prospective multicenter study, we included 225 patients aged ≥60 years undergoing well-defined fast-track total hip or total knee replacement. Patients had neuropsychological testing preoperatively and 1 to 2 weeks and 3 months postoperatively. LOS, pain, opioid use, inflammatory response, and sleep quality were recorded. The practice effect of repeated cognitive testing was gauged using data from a healthy community-dwelling control group (n = 161).RESULTS: Median LOS was 2 days (interquartile range 2-3). The incidence of POCD at 1 to 2 weeks was 9.1% (95% confidence interval [CI], 5.4%-13.1%) and 8.0% (95% CI, 4.5%-12.0%) at 3 months. There was no statistically significant difference between patients with and without early POCD, regarding pain, opioid use, sleep quality, or C-reactive protein response, although the CIs were wide. Patients with early POCD had a higher Mini Mental State Examination score preoperatively (difference in medians 0.5 [95% CI, -1.0% to 0.0%]; P = 0.034). If there was an association between early POCD and late POCD, the sample size was unfortunately too small to verify this (23.6% of patients with early POCD had late onset vs 6.7% in non-POCD group; risk difference 16.9 (95% CI, -2.1% to 41.1%; P = 0.089).CONCLUSIONS: The incidence of POCD early after total hip and knee replacement seems to be lower after a fast-track approach than rates previously reported for these procedures, but late POCD occurred with an incidence similar to that in previous studies of major noncardiac elective surgery. No association between early and late POCD could be verified.

KW - Aged

KW - Anesthesia, Spinal

KW - Arthroplasty, Replacement, Hip

KW - Arthroplasty, Replacement, Knee

KW - C-Reactive Protein

KW - Cognition Disorders

KW - Cohort Studies

KW - Comorbidity

KW - Educational Status

KW - Female

KW - Humans

KW - Length of Stay

KW - Male

KW - Middle Aged

KW - Neuropsychological Tests

KW - Postoperative Complications

KW - Prospective Studies

KW - Stroop Test

KW - Verbal Learning

U2 - 10.1213/ANE.0000000000000194

DO - 10.1213/ANE.0000000000000194

M3 - Journal article

C2 - 24781572

VL - 118

SP - 1034

EP - 1040

JO - Anesthesia and Analgesia

JF - Anesthesia and Analgesia

SN - 0003-2999

IS - 5

ER -