PSG Final Exam with Complete Solutions, Exams of Nursing

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PSG Final exam with complete solutions

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The Ultradian process is - ANSWER-the balance between REM and NonREM sleep Wakefulness is characterized by - ANSWER-higher sympathetic activity Circadian rhythm is controlled by - ANSWER-hypothalamic suprachiasmatic nucleus In teenagers __________ is noted worldwide - ANSWER-phase delay sleep Ohm's law states - ANSWER-Current equals voltage divided by resistance Polarity is - ANSWER-the positive or negative nature of an electrical signal the G1 electrode in a differential amplifier is the - ANSWER-exploring electrode During a sleep study the G1 electrode has an input of 5uV and the G2 signal has 10uV - ANSWER-- Using two ground leads will cause - ANSWER-ground loop The EEG signal in a sleep study use a ________ montage - ANSWER-Referential The minimal sampling rate accepted by the AASM for a digital polysomnographic system is - ANSWER-200Hz

The Occipital Protuberance in the International 10/20 Electrode Placement System is known as - ANSWER-Inion Your measurement from left pre-auricular to right pre-auricular is 36cm. C3 & C will be marked _________ down from Cz - ANSWER-7.2cm The patient's head circumference measures 54cm. Fp1 will be marked at ________ from Fpz - ANSWER-2.7cm These electrodes are used to monitor eye movements: - ANSWER-ROC & LOC Leg leads are placed on the: - ANSWER-Anterior Tibialis muscles The "preferred" EKG placement is : - ANSWER-1 electrode Right chest 3cm below the Right clavicle and 1 electrode Left lower rib The eye leads are placed: - ANSWER-1cm lateral and 1cm up/down To find proper placement of the Anterior Tibialis electrodes you should: - ANSWER-Have the patient flex his/her feet The placement of the chin leads should be - ANSWER-One in the center of the chin and the other 2cm down and 2cm left and right midline The standard paper speed for a sleep studyis - ANSWER-10mm/sec In a male patient what neck size is considered a contributing factor to sleep apnea - ANSWER-17 in or greater The two main accreditation organizations for sleep labs are - ANSWER-JACHO and AASM The acceptable impedance levels of the EEG during a sleep study is - ANSWER- less than 5kOhms The acceptable impedance levels for a EMG during a sleep study is - ANSWER- less than 10kOhms

The universal voltage amplitude for a polysomnogram is - ANSWER-50uV/mm The AASM recommended sensitivity setting for the EEG channels of a polysomnogram is - ANSWER-7uV/cm What is the sensitivity of an EEG channel if the voltage drop is 25uV and the amplitude is .5cm - ANSWER-50uV/cm Another name for a low frequency filter - ANSWER-High Pass Filter The rise time constant is the time the channel signal takes to - ANSWER-reaches 63% of peak voltage Another name for 60Hz filter - ANSWER-a notch filter An acceptable impedance of the EEG electrodes during a PSG - ANSWER-less than 5kOhms The proper HFF and LFF setting for the EEG channels of a PSG montage are - ANSWER-0.3Hz/35Hz The proper HFF and LFF setting for the EMG channels of a PSG montage are - ANSWER-10Hz/100Hz The shape of the respiratory airflow wave is - ANSWER-sinusoidal wave A patient has a local rash at the site of F3, what should the technologist do? - ANSWER-Move the electrode to undamaged skin and document The EOG records the - ANSWER-positive charge of the cornea During physiological calibrations we ask the patient to close their eyes for 30 seconds because - ANSWER-alpha waves become prominent During biocalibrations an increase in chin EMG of ____________ is noted so as to tell help detect sufficient muscle tone - ANSWER-0.5cm

During patient calibrations to perform a proper leg EMG test you shoould ask the patient - ANSWER-flex their toes To mimic paradoxical breathing during biocalibrations the technologist should ask the patient to - ANSWER-pant To correct ECG artifact in the EEG the technologist should use - ANSWER- common mode rejection of M1 and M If cardiac arrest is noted during the study the technologist should - ANSWER- start CPR The MSDS allow the technologist to - ANSWER-know how to handle and utilize chemicals in the workplace Who is in charge of infection control in the lab - ANSWER-Everyone, management, cleaning service, sleep techs, it is up to everyone to practice infection control EEG leads should be cleaned with - ANSWER-soaked in general disinfectant A family physician refers a patient to the lab for a baseline sleep study, what information should he send to the lab - ANSWER-*Complete history in the records including sleep specific information *An order with specific tests to be performed including diagnosis code *A list of all medications the patient is taking HIPPA stands for - ANSWER-Health Insurance Portability and Accountability Act of 1996 The CPAP/BiPAP pressure can be adjusted while the patient is awake. T/F - ANSWER-False EEG measures brainwaves while EMG measures muscle activity. T/F - ANSWER- True

Cup electrodes are usually made of gold. T/F - ANSWER-True The cornea of the eye is negatively charged with respect to the retina. T/F - ANSWER-False The biological clock that regulates sleep and wake is located in: - ANSWER-the hypothalamic suprachiasmatic nucleus The law passed in 1996 to protect the privacy of a patient is: - ANSWER-The Health Insurance Portability and Accountability Act From Nasion to Inion the patient measures 38cm. From Pre-auricular point to Pre- auricular point the patient measures 40cm. Head circumference is 60cm. What is the measurement from O1 to O2? - ANSWER-6cm In teenagers worldwide it is noted that they experience: - ANSWER-Phase delay sleep disorder Several factors that affect the circadian rhythm are: - ANSWER-Light, Tempurature, & Drugs Another name for a 60Hz filter is: - ANSWER-Notch CPAP delivers _______________, whereas BiPAP delivers_____________: - ANSWER-One pressure, Two pressures CPAP is measured in: - ANSWER-cmH2O pressure The normal EKG range for a QRS complex is: - ANSWER-0.04-0.10 seconds The right EOG is placed primarily: - ANSWER-1cm out and 1cm up from the outer canthus The role of the Thalamus is: - ANSWER-To communicate between the cerebral cortex and reticular formation

All of the following can be associated with shift work disorder except: - ANSWER- fibromyalgia The G1 electrode in a differential amplifier is the: - ANSWER-exploring electrode During a sleep study, the G1 electrode has a signal input of 5uV and G2 has a signal input of 10uV. What is the output voltage? - ANSWER-- BiPAP is expressed as: - ANSWER-IPAP/EPAP The _____________ is where most partial or complete airway collapse occurs especially when a patient is supine. - ANSWER-larynx Deoxygenated blood is carried from the right ventricle to the lungs through: - ANSWER-the pulmonary artery The amount of time it takes a calibration signal to fall from its highest point or peak to 37% of its peak is called: - ANSWER-Fall time Ideally optimal PAP titration strives for: - ANSWER-RDI of <5, SpO2>90%, & Snoring eliminated In polysomnography, polarity refers to: - ANSWER-The positive or negative nature of an electrical signal The Occipital Protuberance in the International 10/20 Electrode Placement System is known as: - ANSWER-Inion A 30 second page in polysomnography is called: - ANSWER-Epoch Type of artifact characterized by a blocking of the pens at the highest and lowest points of the channel parameters: - ANSWER-Pen blocking Hypoxemia is: - ANSWER-An abnormally low amount of oxygen in the blood

Safety forms mandated by The Occupational Safety and Health Administration to be maintained in all sleep labs are referred to as: - ANSWER-Material Safety Data Sheets The maximum impedance for EEG channels is: - ANSWER-5 Kohm The AASM recommends a sensitivity setting of __________ for the EEG channels:

• ANSWER-7uV/mm A differential amplifier uses what electrodes: - ANSWER-Exploring and reference During a 30 second epoch, you count 42 QRS complexes. What is the patient's total beats per minute (bpm)? - ANSWER- Type of heart arrhythmia that shows no EKG activity: - ANSWER-Asytole Mask desensitization refers to: - ANSWER-Allowing the patient to wear the mask before the test starts The Accepted filter settings for EEG recording of a sleep study is: - ANSWER-LFF 0.3Hz, HFF 35Hz The accepted filter setting for the EMG channels are: - ANSWER-LFF 10Hz, HFF 100 Hz A low frequency artifact caused by a patient who is overheated and leaves salt on the skin that can cause continued issues throughout the study is known as: - ANSWER-Sweat artifact This structure is referred to as the pacemaker of the heart: - ANSWER-sinoatrial (SA) node The reference electrodes (M1 & M2) are placed over what bone? - ANSWER- mastoid The standard paper speed used for a sleep study is: - ANSWER-10mm/sec

Grouping of electrodes into a displayed layout is called: - ANSWER-montage A polysomnograph consists of several lines of data. These individual data lines are called: - ANSWER-channels Respiratory channels include: - ANSWER-airflow, thoracic, & abdominal The EEG electrodes needed for a sleep study are: - ANSWER-M1, M2, C3, C4, F3, F4, O1, O Refers to an unwanted signal appearing in a recording channel on the polysomnograph: - ANSWER-artifact When measuring from nasion to inion, what percentage do measure up from the inion to OZ: - ANSWER-10% A series of exercises performed by the patient prior to the start of the study are: - ANSWER-biocalibration After passing the __________ exam, a technician is credentialed as a __________.

• ANSWER-BRPT, RPSGT Sinus bradycardia has a rate that is: - ANSWER-less than 40 beats per minute A lose EEG lead, an electric fan or a bad ground can all lead to: - ANSWER-50/ cycle artifact The most important part of PAP titration is: - ANSWER-mask fitting If G1 receives a signal of -100uV at the same time G2 receives a signal of -50uV, what is the output signal? - ANSWER--50uV Maximum CPAP pressure for an adult according to the AASM is: - ANSWER-20cm H2O The amount of time for a calibration signal to rise from baseline to 63% of the peak is - ANSWER-Rise time

Which of these types of wires is best for recording EEG activity? - ANSWER-Cup electrodes What is the purpose of the Low Frequency Filter? - ANSWER-Eliminating undesired slow frequencies A sleep study usually includes all but which of the following measurements? - ANSWER-ERG The circumference of the patient's head is 60cm. What is the distance from O2 to T4? - ANSWER-12.0cm The normal EKG range for the PR Interval is: - ANSWER-0.12-0.20 seconds A type of EKG rhythm with a PVC every third beat is called: - ANSWER-Trigeminy What is the formula used to determine amplitude - ANSWER-A=V/S Sensitivity is measured in - ANSWER-microvolts/cm P wave represents - ANSWER-atrial depolarization QRS complex - ANSWER-ventricular depolarization T wave - ANSWER-ventricular repolarization