Study Objectives: To test the hypothesis that head position, separately from trunk position, is an additionally important factor for the occurrence of apnea in obstructive sleep apnea (OSA) patients.
Design: Prospective cohort study.
Setting: St.
Reflex sympathetic dystrophy (RSD) is a syndrome dominated by sensory, autonomic, and motor features of the extremities. In this study, 10 severely affected RSD patients who progressed to multifocal or generalized tonic dystonia underwent H-reflex evaluation, needle electromyography (EMG), polysomnography, somatosensory evoked potentials, and transcranial magnetic stimulation. H-reflex evaluation revealed an impaired vibratory inhibition of the H-reflex and a higher facilitation peak in the recovery curve between 200 to 350 msec.
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