ENhancing outcomes in Cognitive impairment through use of Home sleep ApNea Testing (ENCHANT)

Observational Study

Get in touch about this study

What is the study about?


The purpose of the ENCHANT study is to determine whether screening for sleep apnea using a Home Sleep Apnea Test, compared to the current standard care using an in-laboratory sleep study, increases the number of patients with cognitive impairment diagnosed and treated for sleep apnea.



Eligibility- Who can participate?

Participants must be:

  • diagnosed with cognitive impairment (e.g. Alzheimer’s disease, mild cognitive impairment, vascular dementia, vascular mild cognitive impairment, Parkinson’s disease-related dementia, etc.)
  • Available to complete overnight sleep testing (at home or in-hospital), as well as clinical and follow-up assessments
  • Not using a CPAP or dental appliance for Obstructive Sleep Apnea
  • Not have a diagnosis of Obstructive Sleep Apnea in the past 2 years


Time requirement

  • Initial baseline appointment: assessments and questionnaires (related to cognition, sleep, function, mood and behavior) and sleep study assessment (at home or in-hospital)
  • 6-month follow-up assessments and questionnaires (related to cognition, sleep, function, mood and behavior)
  • 12-month follow-up phone call


TDRA Study Investigators

Dr. Mark Boulos


More information


TDRA Site:

Sunnybrook Health Sciences Centre

Address: 2075 Bayview Ave, Toronto, ON M4N 3M5

Age Group:

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Target Population:

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Do you have questions about research studies you saw on this page? Please contact tdra@utoronto.ca


The listing of a study on the Toronto Dementia Network (TDN) is for informational purposes only. The safety, efficacy or scientific validity of the studies listed here have not been evaluated by The Alzheimer Society of Toronto (AST) or the Toronto Dementia Research Alliance (TDRA). The TDRA is an academic coalition among the University of Toronto and four memory clinics across Toronto at Baycrest, the Centre for Addiction and Mental Health, Sunnybrook Health Sciences Centre, and the University Health Network. The information collected will be kept and guarded by TDRA. Choosing to participate in a study is an important personal decision. Before you participate in a study, you should make sure you understand the risks and potential benefits and discuss all options with your health care provider(s).