Positions videotaping equipment to film chest and abdominal breathing pattern accurately.5.Operates PC-driven, digital polysomnography for the purpose of: recording patient's stages of sleep (8-10 hours); real-time analysis of obstructive sleep apnea to ascertain the severity of obstructive sleep apnea and then initiate protocol-driven treatment with continuous positive airway pressure or bi-level positive airway treatment using Respiratory Inductive Plethysmography (RIP) and flow volume loops.6.Reviews output, making adjustments as necessary, to produce tracings of multiple variables, including electroencephalogram, elctro-oculogram, sub-mental electromyogram, heart rate, nasal and oral airflow, respiratory effort, end-tidal PCO2 and oxygen saturation.7.Monitors patient's progress, (normally involves monitoring and testing more than one patient at a time), remaining alert for extended apneic episodes, distress and signs or respiratory arrest. Alerts physician and/or code team, as necessary, and initiates cardiopulmonary resuscitation if indicated.8.Reviews, scores and interprets final tracing by identifying sleep stages as determined by following pre-set criteria: number of apneas and hypopneas per hour and per sleep stage; number of arousals; and presence and severity of hypoximia and arrhythmias.