Navigation Links
Polysomnographic technician


A polysomnographic technologist (or PSGT) runs overnight polysomnograms on those with suspected sleep disorders or have been ordered to do so by a physician. To become a PGTT one must, in most cases, perform overnight polysomnograms for 6 months or attend and graduate from a school of sleep medicine. This differs from a Registered Polysomnographic technician (RPSGT) in that they have not yet performed overnight polysomnograms for 18 months and passed their registry exam through the Board of Registered Polysomnographic Technologists or BRPT. Taking the registry exam requires one to first complete guidelines per BRPT rules.

Polysomnographic technologists collect data using PSG's (polysomnograms), which collect EEG, EOG, EMG, and ECG as well as respiratory flow and effort. The technologist or an assistant places wired electrodes on one's head to collect and score brain wave activity (electroencephalogram or EEG). Then there are electrodes which document eye movement (electrooculogram or EOG), fluctuation of muscle tension usually in the legs and chin (electromyogram or EMG), and heart rate (ECG or electrocardiogram). This information was first collected with analog equipment using needle-and-paper method, but in recent years has been transferred to digital data collection which appears on a computer screen. The technologist applies electrodes by first cleaning the area on the skin or scalp with an exfoliating gel, then applying the electrode with conducting gel (and sometimes a water-soluble glue) that improves the body's electrical impedances, thus giving the computer a better readout.

One of the largest growing areas in sleep medicine is in the area of sleep-disordered breathing, especially Obstructive Sleep Apnea Syndrome (OSAS), sometimes referred to as Obstructive Sleep Apnea/Hypopnea Syndrome (OSAHS). An apnea is a cessation of either one or both respiratory effort and airflow for 10 seconds or longer.

An obstructive apnea is usually caused by excess cell tissue lining the upper airway, abnormal airway anatomy, oropharyngeal crowding, or sometimes even enlarged tonsils. The technologist will observe continued respiratory effort (measured using pressure-sensitive thoracic and abdominal belts) but no airflow (measured with a thermistor or thermocouple placed over the mouth and nostrils).

A central apnea is complete cessation of respiratory effort resulting in flat lines in the espiratory belt and flow channels. The person is not respiring.

A mixed apnea begins as a central apnea, but then effort resumes with no airflow, finishing as an obstructive event.

A hypopnea is a partial obstruction associated with a 4 percent or greater continuous desaturation in blood oxygen percentage (measured with a pulse oximeter probe (POX) usually placed on the finger, which measures blood oxygen content by reflecting light from the bloodstream).

If a patient is apneic, he or she will usually have repeated events throughout the night which are disruptive to the sleep cycle. At the end of an apnea or hypopnea is often an arousal, which is a change in EEG frequency often accompanied by increased EMG frequency for between 3-15 seconds. These arousals are short but often can be frequent throughout the night, causing the person to feel tired despite a full night's sleep.

External link


'"/>


(Date:6/3/2015)... Pittsburgh, Pa (PRWEB) June 03, 2015 EMBARGOED ... , Lower Birth Weight Associated with Proximity of Mother’s Home ... women living close to a high density of natural gas ... babies with lower birth weights than women living farther from ... School of Public Health analysis of southwestern Pennsylvania birth ...
(Date:6/3/2015)... 03, 2015 Johnson & Johnson and ... million to resolve a Risperdal lawsuit ( http://www.risperdallawsuit2014.com/ ) ... company allegedly used to market the antipsychotic drug. ... that the Arkansas Attorney General moved to dismiss the ... The Risperdal settlement amounts to just a fraction of ...
(Date:6/3/2015)... Follow us on LinkedIn – ... treatment on account of their better mode of action ... rheumatoid arthritis. The industry is expected to witness a ... drugs to biopharmaceuticals over the coming years. The high ... therapies, and recombinant proteins has attracted industry players to ...
(Date:6/3/2015)... June 03, 2015 Dr. Steven Reisman, a ... Diagnostic Center ( http://www.newyorkcardiac.com ) located in NYC, announced today ... to his practice. In most cases, depending on the level ... day they call, they will be seen by a cardiologist ... as a cardiologist is to ensure that people who have ...
(Date:6/3/2015)... (PRWEB) June 03, 2015 VeoMed ... to expand online and mobile access to premier ... and Maintenance of Certification (MOC) activities. ... VeoMed’s innovative courses to Decker’s extensive lists of ... in purchasing access to VeoMed’s premier online and ...
Breaking Medicine News(10 mins):Health News:Fracking Proximity Associated with Lower Birth Weight 2Health News:Fracking Proximity Associated with Lower Birth Weight 3Health News:Fracking Proximity Associated with Lower Birth Weight 4Health News:Risperdal Lawsuit News: Johnson & Johnson, Janssen Settle Arkansas Marketing Case for $7.8 Million 2Health News:Risperdal Lawsuit News: Johnson & Johnson, Janssen Settle Arkansas Marketing Case for $7.8 Million 3Health News:Risperdal Lawsuit News: Johnson & Johnson, Janssen Settle Arkansas Marketing Case for $7.8 Million 4Health News:Superior Efficacy of Biopharmaceuticals Against Chronic Diseases Drives the Global Biopharmaceuticals Market, According to a New Report by Global Industry Analysts, Inc. 2Health News:Superior Efficacy of Biopharmaceuticals Against Chronic Diseases Drives the Global Biopharmaceuticals Market, According to a New Report by Global Industry Analysts, Inc. 3Health News:Superior Efficacy of Biopharmaceuticals Against Chronic Diseases Drives the Global Biopharmaceuticals Market, According to a New Report by Global Industry Analysts, Inc. 4Health News:NYC Cardiologist, Dr. Steven Reisman, Announces Same Day and Evening Appointments 2Health News:VeoMed and Decker Intellectual Properties, the Owner of Scientific American Medicine, Announce a Partnership to Expand Access to Premier Online CME Courses 2
... be especially diligent about having routine screening colonoscopies, results ... at Buffalo indicate. , Their findings show that persons ... polyps, known as adenomas, and advanced adenomas than men ... were presented Oct. 19 at a 10:30 a.m. session ...
... Dogs may not only be man,s best friend, they ... children with special needs. According to a new Universit de ... anxiety and enhance the socialization skills of children with Autism ... Psychoneuroendocrinology may be a relatively simple solution to help ...
... is not a foreign sight. But what about a turtle or ... fact, according to Gordon Burghardt, a psychology professor at the University ... monkeys -- need a little play time. "I studied ... never saw anything that I thought was play. Then I had ...
... SEATTLE, Wash.October 18, 2010Researchers at the Allen Institute for ... different activity patterns in the brain in individuals with ... individual differences in the effectiveness and side-effect profiles of ... The study is available in this week,s online early ...
... Oct. 19 (HealthDay News) -- People with depression and ... undergoing surgery, a new study suggests. U.S. researchers ... care units between Oct. 1, 2003 and Sept. 30, ... existing psychiatric condition, including 5,500 (15.5 percent) with depression, ...
... , MONDAY, Oct. 18 (HealthDay News) -- Invasive dental procedures ... heart attack and stroke, researchers say. But the increase ... "I don,t want to downplay this entirely, because we ... just after dental work was done among patients undergoing invasive ...
Cached Medicine News:Health News:Prostate cancer patients are at increased risk of precancerous colon polyps 2Health News:Children's best friend 2Health News:UT professor defines play, discovers even turtles need recess 2Health News:Gene activity in the brain depends on genetic background 2Health News:Depression, Anxiety May Raise Surgery Risks 2Health News:Invasive Dentistry May Raise Short-Term Heart, Stroke Risk 2Health News:Invasive Dentistry May Raise Short-Term Heart, Stroke Risk 3
Other medicine definitionOther Tags