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Polysomnography: Technical and Clinical Aspects 

Polysomnography: Technical and Clinical Aspects
Chapter:
Polysomnography: Technical and Clinical Aspects
Author(s):

Sudhansu Chokroverty

, and Roberto Vertugno

DOI:
10.1093/med/9780190228484.003.0036
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date: 17 October 2019

This chapter covers the technical and clinical aspects of polysomnography (PSG). Section 1 includes a brief review of the historical milestones, functional neuroanatomy of sleep, physiological changes (emphasizing those pertinent to overnight PSG interpretation) and clinical relevance as well as homeostatic and circadian factors, and functions of sleep. Section 2 deals with laboratory procedures, including PSG recording and scoring techniques, indications for PSG, video-PSG, ambulatory and computerized PSG, artifacts during PSG recording, and pitfalls of PSG. Section 3 includes clinical considerations, briefly describing the clinical presentation, diagnosis, and treatment but mainly focusing on PSG findings in common sleep disorders as well as sleep-related movement disorders, neurological disorders, and sleep-related epilepsies. Section 4 addresses related laboratory procedures for the assessment of sleep, including the multiple sleep latency test, the maintenance-of-wakefulness test, and actigraphy.

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