Mechanical ventilation in older adults with dementia: opportunities to promote goal-concordant care.

CONTEXT: Recent studies show increasing use of mechanical ventilation among people living with dementia. There are concerns that this trend may not be driven by patient preferences.

OBJECTIVES: To better understand decision-making regarding mechanical ventilation in people living with dementia.

METHODS: This was an electronic health record-based retrospective cohort study of older adults with dementia (n=295) hospitalized at one of two teaching hospitals between 2015 and 2019 who were supported with mechanical ventilation (n=191) or died without mechanical ventilation (n=104). Multivariable logistic regression was used to examine associations between patient characteristics and mechanical ventilation use.

RESULTS: The median age was 78 years (IQR 71-86), 41% were female, 28% resided in a nursing home, and 58% had clinical markers of advanced dementia (dehydration, weight loss, mobility limitations, or pressure ulcers). Among patients supported with mechanical ventilation, 70% were intubated within 24 hours of presentation, including 31% intubated before hospital arrival. Younger age, higher illness acuity, and absence of a treatment-limiting Physician Orders for Life-Sustaining Treatment document were associated with mechanical ventilation use; nursing home residence and clinical markers of advanced dementia were not. Most patients (89%) had a documented goals of care discussion (GOCD) during hospitalization.

CONCLUSION: Future efforts to promote goal-concordant care surrounding mechanical ventilation use for people living with dementia should involve identifying barriers to goal-concordant care in pre-hospital settings, assessing the timeliness of in-hospital GOCD, and developing strategies for in-the-moment crisis communication across settings.