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Doctor insights on: How Accurate Are Polysomnography Exams

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How accurate are polysomnography exams?

How accurate are polysomnography exams?

Not perfect: There are no medical tests that are perfect. That means that the are sensitive enough to diagnose everyone with the condition for which the test is being done and they are specific enough to rule out a diagnosis if the test is negative. Having said that there are different types of sleep studies and they are quite good tests and greater than 90% sensitive. ...Read more

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Polysomnography (Definition)

Polysomnography is a sleep study. A sleep study monitors you as you sleep, or try to sleep. One of the popular disorders it assesses ...Read more


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Are all polysomnography testings overnight?

Are all polysomnography testings overnight?

Not necessarily: Typically psgs are overnight as most people sleep at night. However most sleep centers will perform daytime psgs to accommodate shift workers. Multiple sleep latency tests are somewhat similar to psgs and are usually done during th daytime to evaluate possible narcolepsy and idiopathic hypersomnia. Maintenance of wakefulness tests are done during the day as well. ...Read more

Dr. Jeffrey Ng Dr. Ng
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What is the definition or description of: polysomnography?

Dr. Jeffrey Ng Dr. Ng
1 doctor agreed:
What is the definition or description of: polysomnography?

Sleep Study: Polysomnography is a sleep study. A sleep study monitors you as you sleep, or try to sleep. One of the popular disorders it assesses for is sleep apnea. ...Read more

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What is the age limit for having a polysomnography?

What is the age limit for having a polysomnography?

No age limit: There is no age limit for a sleep study that I've ever heard of. Anyone with excessive daytime sleepiness or with witnessed cessation of breathing while sleeping should have a sleep study. If abnormal, they would likely benefit from good sleeping habits, loss of weight if overweight and cpap. ...Read more

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Hello, Just want to confirm whether a full polysomnography (not only to look for OSA) can be done in my own home (dr sets it up). Many thanks.

Hello, Just want to confirm whether a full polysomnography (not only to look for OSA) can be done in my own home (dr sets it up). Many thanks.

Not ideal: The details are important on what is included in your home assessment. Sleep apnea may be able to be detected with such a setup, but other sleep disorders may not be. You should have a detailed discussion of expectations both from your and your physican's perspective. ...Read more

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I had polysomnography. Please explain: increased spindle densities seen throughout record. (I don't take benzodiazepines).?

I had polysomnography. Please explain: increased spindle densities seen throughout record. (I don't take benzodiazepines).?

Sleep spindles: Increased sleep spindles may be associated with effective stage 2 sleep, if there is no medication caused that so increased sleep spindles may be associated with good memory. ...Read more

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Had polysomnography. Please explain: increase in phasic motor activity w/o stereotypical behaviors seen during REM sleep.?

Had polysomnography. Please explain: increase in phasic motor activity w/o stereotypical behaviors seen during REM sleep.?

Jump around: In sleep. This needs to be interpreted in the context of all the other brain findings of the sleep study. by itself it isn't all that important and doesn't indicate much except a potential problem for interrupted sleep. Especially for the person next to you. ...Read more

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Is being a respiratory therapist necessary to become a polysmnography technician?

Is being a respiratory therapist necessary to become a polysmnography technician?

No: In most states, all you need to do is hands on training in a lab; do some online courses and take the brpt tests for cpsgt or rpsgt. Bingo... ...Read more

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Took a oraquick home oral swab exam 3 months after sex and it was negative. Took another one a month later and it was also negative. Is it accurate?

HIV oraquick: A positive oraquick HIV test doesn't mean that an individual is infected with hiv, additional testing should be done in a medical setting to confirm. A negative test result doesn't mean that a person is not infected with hiv, particularly when exposure may have been within the previous three months. If negative at 6 months it is unlikely you have hiv. If concerned see your doctor to reconfirm. Tx. ...Read more

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Can you tell me how accurate are eye exams for toddlers?

Can you tell me how accurate are eye exams for toddlers?

Depends on variables: This age group is hard to evaluate in a simple setting and the best evaluations can be done by those with the tools and equipment to do so. Ophthalmologists, pediatric ophthalmologists, some and optometrists are likely to get the most accurate results. We seldom try chart exams before 4 as kids rarely understand the process. ...Read more

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Are clinical exams for hip impingement always accurate? I.E. Can they miss it

Are clinical exams for hip impingement always accurate? I.E. Can they miss it

No: No test is perfect, nor is the clinician. So certainly the diagnosis of hip impingement can sometimes be missed. Usually the diagnosis relies on a detailed history, exam, and appropriate radiologic studies. If your concerns are not addressed by your physician, it is not unreasonable to consider a second opinion. Thank you for your question. ...Read more

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Symptom wise how can I know it is ibs and not a parasite? Stiol exams neg, r they accurate?

Symptom wise how can I know it is ibs and not a parasite? Stiol exams neg, r they accurate?

You can't.: From symptoms alone, it would be impossible to differentiate IBS from a parasitic infection. However, if you have had a negative parasite exam performed by a reliable lab, the chances of a parasitic infection are very small. If you persist in having uncontrollable diarrhea, see your doctor or a gastroenterologist for further advice. Good luck. ...Read more

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Got a prostate exam by primary doc (for frequent urination), he asked while doing it if it hurt, I did have a dull pain, he said he doesn't think I have prostate issue. How accurate is his analysis?

Got a prostate exam by primary doc (for frequent urination), he asked while doing it if it hurt, I did have a dull pain, he said he doesn't think I have prostate issue. How accurate is his analysis?

Rectal exams: Massage of the prostate by a finger in the anus is never comfortable and often creates significant discomfort. This may be interpreted as pain by the person being examined, but may not necessarily represent disease. The experienced examiner can usually tell what is meaningful and what is a normal reaction to the insult. Without knowing your pcp I cannot really comment on how accurate they are. ...Read more

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Is a breast self-exam more accurate than a mammogram at 35?

Is a breast self-exam more accurate than a mammogram at 35?

Apples ; Oranges: Mammograms can see things which cannot be felt; breast (self) exam can sometimes find lumps that cannot be seen--these modalities complement one another. That said, we usually do not recommend mamms until age 40. If one has a suspicious lump by either modality, (nonsurgical) needle biopsy is the only means for definitive diagnosis. ...Read more

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How accurate is a complete office neurological exam on detecting brain tumor?

How accurate is a complete office neurological exam on detecting brain tumor?

Depends: A neurological exam can help to localize a lesion, but determination of the etiology of the lesion (the diagnosis) depends on the history and a diagnostic work-up (imaging, labs, etc) if indicated. Location and rate of growth of brain tumors are factors in how they first manifest. See a neurologist for evaluation if you're concerned. Http://www. Nlm. Nih. Gov/medlineplus/ency/article/003191.htm ...Read more