Polysomnography Study guides, Class notes & Summaries

Exam 2: NSG550 / NSG 550 (Latest 2024 / 2025 Update) Diagnostic Reasoning for Nurse Practitioners Review | Questions and Verified Answers | 100% Correct | Grade A - Wilkes Q: A comprehensive test used to diagnose sleep disorders that records your brain waves, the oxygen level in your blood, heart rate, and breathing, as well as eye and leg movements during the study. Answer: Polysomnography Q: Indications for polysomnography Answer: -Sleep apnea -Periodic limb movement disorder sometimes associa...

Respiratory Therapy - Lindsey Jones/Clinical Simulations 459 Questions with Verified Answers Information Gathering - Emphysema: (Abnormal condition of the alveoli resulting destruction and loss of elasticity) - CORRECT ANSWER LEVEL I : Cyanosis, Barrel chest, increased A-P diameter, Accessory muscle use, Digital clubbing of the nail beds, Significant history of smoking and/or occupational exposure to smoke or other pulmonary irritant LEVEL II : Dyspnea, Wheezing breath sounds LEVEL III ...

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 ...

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...

Bruxism Scoring CORRECT ANSWER 1. May consist of brief or sustained elevations of chin EMG activity at least twice the amplitude of background EMG. 2) 0.25 - 2 seconds in duration and if at least 3 elevations in a regular sequece. 3) sustained elevations of chin EMG if more than 2 seconds. 4) 3 seconds of stable background before new episode can be scored 5) It can be scored with a min of 2 audible tooth grinding (in absence of epilepsy) EFM (Excessive Fragmentary Myoclonus) CORRECT A...

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...

There are two types of sleep studies: CORRECT ANSWER 1. Overnight polysomnograms (PSGs) 2. Daytime nap studies list the types of overnight polysomnograms: CORRECT ANSWER could be level 1 or 2, seizure montages, CPAP titrations, etc list the types of daytime nap studies: CORRECT ANSWER multiple sleep latency test, maintenance of wakefulness test list the required equipment and components of a routine PSG (level 1): CORRECT ANSWER - EEG or electroencephalogram (a minimum of F4/M1, C4/M1...

Polysomnography Terms

POLYSOMNOGRAPHY – QUESTIONS AND ANSWERS