Prevalence of Sleep Disordered Breathing
Prevalence of Sleep Disordered Breathing
A novel technique in identifying unspecified sleep apnea has been developed. This technique
 uses signals typical acquired from a bedside monitor that is found in critical care
 environments. Those signals are then processed by a sleep analysis algorithm to provide an
 Apnoea Hypopnea Index (AHI) score. This study is intended to determine whether the prevalence
 of sleep disordered breathing identification among patients in a Coronary Care Unit (CCU)
 using this novel approach is significantly different than using routine techniques.
This study will focus on inpatients diagnosed with coronary conditions. Specific eligibility
 criteria will include:

 -  Unstable angina

 -  Acute myocardial infarction

 -  Congestive heart failure Subjects enrolled in the study will be scored for sleep apnea
 using a novel approach designed by the sponsor. That score will not be used in the
 course of treatment. A follow-up call will determine whether the subject was identified
 for sleep disordered breathing during the hospital stay. A comparison will be done on
 the number of those identified with and without the use of the sleep scoring device.
Inclusion Criteria:

 -  Age equal to or greater than 18 years at time of consent

 -  Written informed consent

 -  Patients admitted to the intensive care unit if able to remove oxygen

 -  Patients admitted to telemetry and step-down floor that will not require oxygen

 -  Primary diagnosis (any of the following)

 -  Un-stable angina

 -  Acute myocardial infarction

 -  Congestive heart failure

 Exclusion Criteria:

 -  Previously diagnosed sleep disordered breathing

 -  Inability to consent

 -  Pregnancy

 -  Intubation (no longer excluded after extubation)

 -  Oxygen therapy (no longer excluded after therapy ends)

 -  End-Stage renal disease

 -  End-Stage liver disease

 -  Terminal disorders other than cardiac

 -  Severe scoliosis

 -  Cervical spinal cord injuries

 -  Neuromuscular disorders

 -  Severe COPD as defined by prescription of home oxygen therapy

 -  Other unsuitable circumstances