COMPASS: Cognitive Monitoring in Planned Arthroplasty Surgery - Pilot Study
A decline in cognitive function is common and sometimes permanent following major surgery in the elderly. It is uncertain what causes the change, whether a similar decline might occur without surgery and who is at risk. Current literature lacks an accurate picture of pre-operative cognitive trajectories and trajectory in older people who don’t have surgery. Our aim is to assess the feasibility of serial remote monitoring of cognition with an online tool (CogTrack™) in elderly patients undergoing planned arthroplasty surgery and matched non-surgical controls. Our primary care and anaesthetic trainee research networks will work in collaboration with patients, industry and cognition experts.
Feasibility study testing a prospective observational methodology at two secondary care sites and two primary care sites. Serial cognitive testing will be performed with CogTrack™ on 150 surgical patients and 150 matched non-surgical controls over an 11-week window incorporating the surgical episode. The primary outcome measure is feasibility. Secondary outcome measures include CogTrack™ scores and prevalence of factors which may impact on cognition. Patients were involved in refining outcome measures and will contribute throughout.
Feasibility data including number of patients approached, recruited, declining and withdrawing will be collected, as well as information about IT accessibility and completion rates of assessments. Summary statistics will be conducted on CogTrack™ data for cases and control groups, and plots constructed to demonstrate trajectory of scores over the 11-week study period. Mixed Model Repeated Measure analysis will be performed to assess the effects of exposure to arthroplasty and adjust for candidate covariates.
Our aim, in a future multi-centre study, is to track the cognitive trajectories of a large number of operated cases and matched controls over a long time period. Arthroplasty surgery is performed very commonly, and on an increasingly aging population, aiming to improve functional capacity. Conversely, permanently altered cognition could impact on patients’ quality of life. Clinical research underpins shared decision-making with patients.