This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Sleep Apnea Treatment After Stroke (SATS)

This study has been terminated.
(Poor recruitment. Funding expired.)
Information provided by (Responsible Party):
Devin Brown, University of Michigan Identifier:
First received: January 26, 2006
Last updated: January 31, 2013
Last verified: December 2012
The purpose of this study is to determine if treating stroke patients who have obstructive sleep apnea with continuous positive airway pressure will improve symptoms caused by the stroke.

Condition Intervention Phase
Obstructive Sleep Apnea Stroke Device: continuous positive airway pressure or CPAP Device: sham CPAP Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Treatment of Obstructive Sleep Apnea After Stroke

Resource links provided by NLM:

Further study details as provided by Devin Brown, University of Michigan:

Primary Outcome Measures:
  • Cumulative Continuous Positive Airway Pressure (CPAP)/Sham CPAP Usage Hours Over the 3 Month Period. [ Time Frame: 3 months ]
  • Number of Subjects Who Withdraw From Study. [ Time Frame: 3 months ]
    Prespecified outcome.

Secondary Outcome Measures:
  • Barthel Index [ Time Frame: 3 months ]
    Barthel Index score range: 0 (worst, fully dependent) - 100 (best, independent).

Enrollment: 32
Study Start Date: September 2004
Study Completion Date: May 2010
Primary Completion Date: May 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
Device: continuous positive airway pressure or CPAP
RemStar Pro (Respironics, Inc.) The CPAP is applied through a nasal mask during the hours of sleep. Positive air pressure holds the naso-oro-pharyngeal airway open during sleep.
Sham Comparator: 2
sham CPAP (placebo)
Device: sham CPAP
sham CPAP

Detailed Description:

Stroke is the leading cause of adult disability in the United States, yet there are very few treatments that improve stroke outcome. Obstructive sleep apnea (OSA)--frequent upper airway blockage that occurs during sleep--is common after stroke, affecting more than half of stroke patients. The most common treatment for obstructive sleep apnea in the general population is nasal continuous positive airway pressure (CPAP) applied through a nasal mask during the hours of sleep. Positive air pressure holds the naso-oro-pharyngeal airway open during sleep.

The objective of this single-center, prospective, randomized study is to evaluate CPAP treatment in post-stroke patients. Participants will go through a medical interview, a brief neurological examination, and a sleep study to screen them for OSA. Those with OSA will be eligible for the second phase of the study during which participants will be randomly selected to receive either treatment with CPAP or with sham CPAP (placebo).

This project promises to establish feasibility, develop design and identify suitable outcome measures (e.g. hours of CPAP treatment per week, functional outcome, depression, fatigue, and impaired alertness) for a large-scale clinical trial of CPAP in stroke patients with OSA. If the larger trial shows benefits of CPAP, a new treatment for more than half of all stroke patients will become available.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Ischemic stroke within 7 days of planned polysomnography/sleep screening study
  • Modified Rankin Scale score >1
  • If of child-bearing potential, has a negative urine or serum pregnancy test

Exclusion Criteria:

  • Decompensated heart failure
  • Cardiac or respiratory arrest within the past 3 months
  • Myocardial infarction within the past 3 months
  • Severe pneumonia
  • Hypertension refractory to treatment
  • Any other unstable medical condition which is thought to interfere with participation
  • Known preexisting OSA already on CPAP or previously failed CPAP or used CPAP
  • Previous pneumothorax
  • Bullous emphysema
  • Chronic obstructive pulmonary disease (COPD), obesity-hypoventilation, or another condition warranting the use of nasal bilevel positive airway pressure instead of CPAP
  • Acute sinus or ear infection
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00282815

United States, Michigan
University of Michigan
Ann Arbor, Michigan, United States, 48109
Sponsors and Collaborators
University of Michigan
Principal Investigator: Devin Brown, MD, MS Associate Professor, Stroke Program, University of Michigan
Study Director: Lewis Morgenstern, MD Director, Stroke Program, University of Michigan
Study Director: Jack Kalbfleisch, PhD University of Michigan Dept of Biostatistics
  More Information

Responsible Party: Devin Brown, Associate Professor, University of Michigan Identifier: NCT00282815     History of Changes
Other Study ID Numbers: K23NS051202 ( U.S. NIH Grant/Contract )
Study First Received: January 26, 2006
Results First Received: June 21, 2011
Last Updated: January 31, 2013

Keywords provided by Devin Brown, University of Michigan:
obstructive sleep apnea
continuous positive airway pressure

Additional relevant MeSH terms:
Sleep Apnea Syndromes
Sleep Apnea, Obstructive
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms, Respiratory
Signs and Symptoms
Sleep Disorders, Intrinsic
Sleep Wake Disorders processed this record on September 19, 2017