Approximately a third of the world's population will suffer from some type of sleep disorder in their lifetime. The majority of these disorders cause excessive daytime sleepiness. The main conditions that cause disruption to sleep patterns are sleep apnoea, repeated arousals caused by limb activity and narcolepsy. Sleep apnoea can be categorized into two main types, obstructive and central. In obstructive sleep apnoea (OSA) obstruction of the airway occurs by relaxation of the soft palate at the base of the tongue and uvula. Continued collapse of the airway will result in an increased respiratory effort to unblock the obstruction. In central sleep apnoea (CSA) the airway remains open but there is a total cessation of respiratory activity while the diaphragm and chest muscles stop working. The Regional Medical Physics Department in conjunction with the Department of Sleep Medicine has developed a multi modality system for the assessment of persons with sleep apnoea. The monitoring system has been used for over a decade in our sleep studies unit and was pioneering the use of digital video capture and compression synchronized with the various physiological measurement parameters.
Daya A, Tapper B, Bennett J, Dodds C. Development of a Paediatric sleep study system for assessment of children with obstructive sleep apnoea. Poster presentation. Annual Research and Development Day, James Cook University Hospital, Middlesbrough, 30 March 2007.
Abdul Daya, Cleveland Unit, Middlesbrough. Tel: +44 (0)1642-854-778.
Regional Medical Physics Department, Freeman Hospital, Newcastle upon Tyne, NE7 7DN, UK.
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Regional Medical Physics Department, a Clinical Directorate of the Newcastle upon Tyne Hospitals NHS Foundation Trust.
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