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Positional Therapy After Stroke

2014-08-27 03:16:41 | BioPortfolio

Summary

Stroke is the leading cause of adult disability and the third leading cause of death in the United States. Unfortunately, there are few therapies that have been proven to improve stroke outcome. Sleep apnea is an emerging stroke risk factor and has a well established association with higher mortality and poor functional outcome following stroke. Over half of acute stroke patients have sleep apnea, suggesting that it may be a important target for therapy. Attenuation of sleep apnea severity may result in improved stroke outcomes. However, the standard treatment for sleep apnea is not well-tolerated among stroke patients. An alternative treatment is avoidance of supine sleep. Supine sleep is very common in acute stroke patients, and therefore this treatment may have particular relevance to the stroke population. The proposed study will be conducted in two phases. The first phase is a randomized, crossover design in which acute stroke patients will be given positional treatment (to avoid supine sleep) on one night during their stroke hospitalization. This will be compared with another night of sleeping without positional therapy. The order of treatments (standard vs positional therapy) will be random. The first phase will demonstrate the proof of concept: that stroke patients given positional therapy to avoid supine sleep will (1) sleep less on their backs, and (2) will have improved sleep apnea parameters with positional therapy. In the second phase, those identified to have sleep apnea will be randomized to receive positional therapy at home for three months, or standard therapy. This second phase will demonstrate the adherence/feasibility of three months of positional therapy, and will allow us to estimate effect size based on a functional outcome measure. The data obtained from this pilot clinical trial are essential to plan a large efficacy study.

Study Design

Allocation: Randomized, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Sleep Apnea

Intervention

Positional therapy including the use of a special pillow

Location

University of Michigan
Ann Arbor
Michigan
United States
48109

Status

Recruiting

Source

University of Michigan

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:16:41-0400

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Medical and Biotech [MESH] Definitions

A condition associated with multiple episodes of sleep apnea which are distinguished from obstructive sleep apnea (SLEEP APNEA, OBSTRUCTIVE) by the complete cessation of efforts to breathe. This disorder is associated with dysfunction of central nervous system centers that regulate respiration. This condition may be idiopathic (primary) or associated with lower brain stem lesions; chronic obstructive pulmonary disease (LUNG DISEASES, OBSTRUCTIVE); HEART FAILURE, CONGESTIVE; medication effect; and other conditions. Sleep maintenance is impaired, resulting in daytime hypersomnolence. Primary central sleep apnea is frequently associated with obstructive sleep apnea. When both forms are present the condition is referred to as mixed sleep apnea (see SLEEP APNEA SYNDROMES). (Adams et al., Principles of Neurology, 6th ed, p395; Neurol Clin 1996;14(3):611-28)

Disorders characterized by multiple cessations of respirations during sleep that induce partial arousals and interfere with the maintenance of sleep. Sleep apnea syndromes are divided into central (see SLEEP APNEA, CENTRAL), obstructive (see SLEEP APNEA, OBSTRUCTIVE), and mixed central-obstructive types.

Dyssomnias (i.e., insomnias or hypersomnias) associated with dysfunction of internal sleep mechanisms or secondary to a sleep-related medical disorder (e.g., sleep apnea, post-traumatic sleep disorders, etc.). (From Thorpy, Sleep Disorders Medicine, 1994, p187)

A disorder characterized by recurrent apneas during sleep despite persistent respiratory efforts. It is due to upper airway obstruction. The respiratory pauses may induce HYPERCAPNIA or HYPOXIA. Cardiac arrhythmias and elevation of systemic and pulmonary arterial pressures may occur. Frequent partial arousals occur throughout sleep, resulting in relative SLEEP DEPRIVATION and daytime tiredness. Associated conditions include OBESITY; ACROMEGALY; MYXEDEMA; micrognathia; MYOTONIC DYSTROPHY; adenotonsilar dystrophy; and NEUROMUSCULAR DISEASES. (From Adams et al., Principles of Neurology, 6th ed, p395)

Periods of sleep manifested by changes in EEG activity and certain behavioral correlates; includes Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep.

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