How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dr Subbanna MD Your Own Question
Dr Subbanna MD
Dr Subbanna MD, Neurologist (MD)
Category: Neurology
Satisfied Customers: 5476
Experience:  American Board Certified Neurologist, Internal Medicine
Type Your Neurology Question Here...
Dr Subbanna MD is online now
A new question is answered every 9 seconds


Customer Question

Submitted: 6 years ago.
Category: Neurology
Expert:  Dr Subbanna MD replied 6 years ago.

Thanks for the question.

A sleep study is useful in identifying the following conditions;

OSA (obstructive sleep apnea)


PLMS (periodic limb movement disorder of sleep)

RBD (REM sleep behavioral disorder) etc

The sleep study, also called as polysomnography is performed in a sleep lab. During the procedure patient is hooked up with myriad electrodes so that the brain waves, breathing pattern, muscle tone, eye movements etc can be captured and interpreted.

For all the above conditions except the narcolepsy a night time study is all that is required to arrive at the diagnosis. If narcolepsy is suspected; then the following day patient needs to under go another test named as multiple sleep latency test (MSLT) during which patient will take several scheduled naps during the day time (day time test).

The sleep study test reveals the total duration the patient was on the bed, the actual duration the patient slept, awakenings from the sleep, cessation of breathing (apneas - total cessation of breathing & hypopneas- partial cessation of breathing), sleep architecture, onset & duration of REM & NREM sleep, abnormal leg movements, any behavioral changes etc and helps in arriving at the final diagnosis

Please ask if there are any further questions.

Best regards,

Dr Sathya.

Dr Subbanna MD and other Neurology Specialists are ready to help you
Expert:  Dr Subbanna MD replied 6 years ago.

Thanks very much for the consultation, as well as for the payment. Please follow up any time if my services are required again. All the best! Best regards, ***** *****