Objectives
We assessed whether post-operative delirium is associated with healthcare utilization and overall survival after trans-catheter aortic valve replacement.
Background
Delirium, a common syndrome among hospitalized older adults, is associated with increased morbidity and mortality.
Methods
We reviewed 294 transcatheter aortic valve replacement cases between June 2008 and February 2015 at a tertiary care academic medical center. Post-operative delirium was identified by confusion assessment method screening and clinician diagnosis.
Results
Delirium was identified in 61 patients (21%). Non-femoral access for trans-catheter aortic valve replacement was more common in delirious patients than in non-delirious patients (41% vs. 27%, P = 0.04). Delirious patients had diminished overall survival after trans-catheter aortic valve replacement compared to non-delirious patients (1-year survival 59% vs. 84%, log-rank P = 0.002). After adjusting for age, Society of Thoracic Surgeons predicted 30-day mortality, and access type; delirium remained independently associated with diminished overall survival (hazard ratio 2.01, 95% confidence interval 1.21–3.33, P = 0.007). The delirium group had longer mean hospital stay (13.3 ± 9.5 days vs. 6.7 ± 3.8 days, P < 0.001) and a higher rate of discharge to a rehabilitation facility (61% vs. 27%, P < 0.001), but there was no difference in 30-day hospital re-admission rates or 30-day mortality based on delirium status.
Conclusions
Delirium occurs in one out of five patients after trans-catheter aortic valve replacement and is associated with diminished survival and increased healthcare utilization. Further studies are needed to clarify whether strategies aimed at reducing delirium after trans-catheter aortic valve replacement may improve outcomes in this high-risk subset. © 2016 Wiley Periodicals, Inc.
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