Somn - Study guides, Class notes & Summaries

Advanced sleep phase syndrome (ASPS) CORRECT ANSWER Cicadian rhythm disorder, phases of daily sleep/wake cycle are advanced with respect to clock time. Sleep phase occurs well ahead of conventional bedtime with tendency to wake up too early; usually involving the elderly Alpha intrusion CORRECT ANSWER brief occurrence of alpha activity during a stage of sleep. Alpha rhythm- EEG oscillation prominent over the occipital cortex, with a frequency of 8-13 Hz I adults: indicative of wake state; pre...

Polysomnogram CORRECT ANSWER Test records several body fuctions during sleep. Nasion CORRECT ANSWER Bridge of the nose Inion CORRECT ANSWER Occipital protuberance - most prominent point of the occipital bone Pre-auricular points CORRECT ANSWER In the front notches in the middle of each ear. EKG Artifact CORRECT ANSWER EKG waveform appearing in other channels EKG Artifact correction CORRECT ANSWER Moving the affected electrode(s). STAGE W (Wake) CORRECT ANSWER - high frequency p...

What is the system called for electrode placement CORRECT ANSWER 10-20 system where do the electrodes with odd numbers go on the scalp CORRECT ANSWER left hand side where do the electrodes with even numbers go on the scalp CORRECT ANSWER right hand side what does Z stand for CORRECT ANSWER Z is the mid-line What are the 4 land marks for electrode placement CORRECT ANSWER nasion, inion, left pre-auricular point, right pre-auricular point what is the average distance between nasion ...

While reviewing the scoring report, the technologist noticed that the lowest SpO2 is listed as 0%. What should the technologist do next? - ANSWER Review the study, and label bad data where the pulse oximeter failed. During a multiple sleep latency test, how is sleep onset defined? - ANSWER The first 30-second epoch in which there is more than 15 seconds of cumulative sleep Where are the reference electrodes M1 and M2 placed on the head? - ANSWER In the preauricular area behind the ear or t...

POLYSOMNOGRAPHY – QUESTIONS AND ANSWERS

The goals of PAP therapy include all of the following EXCEPT to ve diminished lung capacity. b. eliminate flow limitations in the upper airway. c. eliminate excessive daytime somnolence. d. eliminate snoring. - ANSWER-A: Improve diminished lung capacity. The CPAP and BiPAP used in the sleep lab are non-invasive respiratory therapies that do not have effects on patient's lung capacity or tidal volumes. The focus of the PAP devices is to maintain the structural integrity of the airway, esp...

While reviewing the scoring report, the technologist noticed that the lowest SpO2 is listed as 0%. What should the technologist do next? - ANSWER Review the study, and label bad data where the pulse oximeter failed. During a multiple sleep latency test, how is sleep onset defined? - ANSWER The first 30-second epoch in which there is more than 15 seconds of cumulative sleep Where are the reference electrodes M1 and M2 placed on the head? - ANSWER In the preauricular area behind the ear or t...

What is a polysomnography? CORRECT ANSWER Sleep study What part of the brain are we most interested in? CORRECT ANSWER Thalamus, controls consciousness and sleep What is an electroencephalogram (EEG)? CORRECT ANSWER A measure of electrical activity of the brain recorded across the scalp. What is an electrooculgraphy (EOG)? CORRECT ANSWER Measures electrical activity of the eye and is essential for the documentation of the rapid eye movements characteristic of REM sleep. What is obstr...

Where monitor activity with PSG CORRECT ANSWER 2-3 EEG derivations from frontal, central, and occipital regions electrode impdances <5 kOhms EEG measures CORRECT ANSWER postsynaptic potentials from gigantic pyramidal cells EOG measures CORRECT ANSWER left and right eye movement cornea = positive charge retina = negative charge submental EMG records CORRECT ANSWER chin movement used to determine phasic REM airflow measured by what during PSG CORRECT ANSWER changes in temperatur...