Regulation of Pharyngeal Muscle Contraction - SCOR in Cardiopulmonary Disorders of Sleep

To determine the degree to which neuro-psychological performance and general health status and function may be impaired in subjects with mild and moderate degrees of sleep-related respiratory disturbances (SRRD), as compared to subjects with minimal apneic activity. Also, to assess the degree to which improvement may occur following specific treatment.

Completed

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Key information

Conditions

Lung Diseases Apnea Dyssomnias Nervous System Diseases Respiration Disorders Respiratory Tract Diseases Sleep Apnea Syndromes Sleep Disorders, Intrinsic Sleep Wake Disorders

Age range

Up to 100 year

Sex eligibility

Male

Study type

Observational

About this study

BACKGROUND:

The study was a subproject in a Specialized Center of Research in the Cardiopulmonary Disorders of Sleep. Frequent sleep-related respiratory disturbances (SRRD) have been recognized to occur in as many as 70 percent of elderly and 15 percent of middle-aged subjects. Although it is widely agreed that subjects with obvious daytime sleepiness that occurs in association with severe obstructive sleep apnea (Respiratory disturbance indices (RDI) >30) benefit from treatment of their sleep disorders; there is no consensus (and a paucity of data) regarding treatment benefits in subjects with a less profound disorder. Rational utilization of health care resources for diagnosis and treatment of sleep apnea requires assessment of whether adverse health effects occur as a consequence of mild or moderate levels of SRRD, and whether any such health effects may be reversible with treatment.

DESIGN NARRATIVE:

The neuropsychological performance, sleepiness and general functional status were evaluated in 330 subjects, including subjects with little apneic activity (RDI<5), mild activity (RDI 5-14), and moderate activity (RDI 15-25). Of these subjects, 75 percent were selected from a clinic-based sample, and 25 percent were recruited from an ongoing population-based study. 150 subjects with mild and moderate activity were randomized to receive 'conservative' medical therapy (CMT) or CMT plus nasal continuous positive air pressure (CPAP) therapy. Simple statistics, as well as multivariate techniques, were used to determine the relationship between SRRD (and associated hypoxemia, sleep fragmentation, and physiological sleepiness) to: a) intellectual abilities, attention and vigilance, psychomotor performance, learning and memory, and executive functions, and b) to general health status and function. Potential benefits of treatment specific for sleep apnea in subjects with mild and moderate SRRD were also determined after two months of CPAP therapy.

The study completion date listed in this record was obtained from the "Completed Date" entered in the Query View Report System (QVR).

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

No eligibility criteria

Sponsors and collaborators

Lead sponsor

National Heart, Lung, and Blood Institute (NHLBI)

Nih

Registry information

Important dates

Study start: 1988
Study completion: 1998
First posted: May 26, 2000
Registry last updated: Sep 28, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed