What's A Split Night Study?
The Split Night Study is a painless test that determines what type and degree of sleep apnea you have, as well as the level and type of PAP (positive airway pressure) therapy most appropriate for you. This test is typically done at night.
When you arrive for your sleep study, a Registered Polysomnographic Technologist or Respiratory Therapist will be at the site to greet you and show you to your room. After you make yourself comfortable, your technologist will take a brief history, explain the study process, and answer any questions you may have prior to applying the sensors. This process is completely painless and generally takes about 40 minutes to make sure everything is placed correctly.
Next, your technologist will ask you questions about how you believe you breathe during the night in order to assess what type of mask will work best for you. In case you meet the criteria to have a CPAP mask during the night, you’ll be fitted with one at this time and given time to relax quietly with the mask on so you can get comfortable with it.
What to Expect?
Your technologist will begin applying the sensors, using stickers to affix leads on your legs and chest. You will also have two belts placed around your chest and abdomen that monitor your body’s efforts to breathe.
Next, your head will be marked and measured with a paper ruler and a grease pencil. This is done because each electrode on your head needs to be in a precise location. Once this is complete, a skin prep jelly will be applied to clean the scalp for the electrodes.
Electrodes are then placed on the surface of your scalp with a small amount of paste. The prep, paste, and tape are hypoallergenic.
You’ll also have a nasal cannula (similar to an oxygen cannula) to monitor your breathing. You will not receive oxygen during your PSG.
This process is completely painless and generally takes about 40 minutes to make sure everything is placed correctly.
Preparing for Your Sleep Test
Set Time Aside
This is an overnight test. Plan to be at our sleep center overnight until approximately 6 a.m. the next morning.
Wash and Dry Your Hair
Wash and dry your hair thoroughly but do not use conditioners or other hair products.
Remove any hair weaves or extensions. We cannot do testing if you have either of these.
Acrylic or Applied Nails
If you have acrylic, dip or applied (“fake”) nails an index fingernail needs to be removed for the oxygen reading. If you have gel nail polish, the polish from one of the index fingers will need to be removed. Regular nail polish is fine. The oximeter does not read through acrylic or applied nails, nor gel polish.
What Should I Wear?
Wear comfortable, loose-fitting, two-piece clothing. You must wear pajamas or two-piece clothing for the test.
Bring – and take – all of your normally scheduled medications unless otherwise directed by your doctor or the staff at Sleep Insights.
Special Requirements and Guests
Guests are not allowed to stay overnight with patients other than for specific medical reasons (e.g. parent with a child, caregiver for patient with special needs). Arrangements for caretakers must be made with advanced notice and with prior permission from their provider. Anyone accompanying a patient to their sleep test who isn’t an approved caretaker must leave at 9pm.
Smoking, vaping and the use of alcohol are not permitted in the building or on the premises at any time.
Please avoid caffeine intake after dinner on the day of your study. We have caffeine free beverages available at the sleep center for you.
Cancellations must be made by at least 12 noon the day before your study, or if your study is on a Saturday or Sunday, by noon on the Friday before.
Failure to show up for your scheduled sleep study will result in a $100.00 no-show charge.