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Frequently Asked Questions


Pre-Study Questions

Q1. How is a sleep study done?

Once you are dressed up with your pajamas, our sleep technician will explain how the study is processed and will place sensors on multiple places on your body. In order to observe your body condition while you are asleep.

Your body will be monitored on video camera, and the sensors will record all your activities (brainwave activity, eye movements, muscles activity, heart rhythm, body movements, airflow, respiratory effort and oxygenation). Not to worry, the sensors are not painful they are known as electrodes attached to your body in a way to make it comfortable to fall asleep. They are long enough to let you move around the bed.

However; in case you have skin irritation due to electrodiagram testing in the past please inform our office prior to the study.

Q2.What is the time period for the sleep study?

The time period of the sleep study will be approximately 8 to 10 hours. We usually schedule the arrival time at 8:00 pm or 9:00 pm, and get situated into your room .You will need to fill out some paperwork and change into your pajamas. Once you are ready, our sleep technician will start your hook up process which could take around 30 min. During this time, the technician will explain the test and answer all your questions.

Q3. How can I prepare myself before coming for my sleep study?  

Avoid taking any caffeine after 12:00 pm on the day of the study such as (Coffee, tea, energy drinks, chocolate  ...etc.). Do not take any naps after 12:00 pm on the day of the study. Alcohol beverages are also prohibited on the day of the study.  

Q4. Do you have overnight parking facilities? 

Yes, Sleep Center provides free overnight parking for our patients.

Q5. Where is Sleep Center located at?

10 Orland Square Dr. Orland Park, IL 60462

Is the Sleep Study covered by insurance?

Most medical insurance cover the sleep study.


Q6. Do you accept Pediatric patients?

Sleep Center offers sleep studies for children who are 13 and older, and allow parents to stay overnight.

Q7. Who is going to take care of the insurance approval?

Our highly trained administrative staff will take care of the approval for the sleep study.

Q8. What can I bring to my sleep study?

Our goal is to make you feel very comfortable during your sleep study, you may bring your toiletry items, bedtime snacks, your pillow, cell phone, iPod, laptop, a book …etc. However; all items will have limited use once the sleep time has arrived.

You need to bring the medications that you take, the center is outpatient, so you need to administer your own medication.


Q9. What will Sleep Center provide me for my sleep study?

  1. King Size Bed

  2. Pillows

  3. Blanket

  4. Towels

  5. Private Bathroom and Shower in your room fully equipped with products you need

  6. T.V with cable

  7. Free Wi-Fi

  8. Overnight Parking


Q10. Is it possible to bring valuables with me to the study?

It is preferred to leave your valuables at home. Sleep Center is not liable for any missing or damaged items.


During study Questions


Q11. Am I allowed to watch T.V?

Yes, you will have your own television located in your room, feel free to watch your favorite show. However; lights will be turned off at 11:00 pm, to ensure that you get as much time to sleep as possible. In addition, this will help us to gather as much information as possible to complete your sleep study.

Q12. How can I sleep when I have wires attached to me?

Our team has managed to arrange for the sleep study to make it as comfortable as possible, in order to get the best results out of the sleep study. The wires are long enough to make you move around and can easily be disconnected when you need to use the restroom. Our technician will always be there to assist you if you need anything.

Q13. Can I take my regular medication the night of my study?

Patients are allowed to take their medication but they need to consult with their physicians. In addition, they need to mention the medication they take when filling out their paper work.

Q14. What Happens During My Sleep Study? 

While the patient sleeps, our highly trained technicians are carefully monitoring and recording the various critical body functions throughout the duration of the study. This is to determine whether you have Sleep Disorder or not.


Q15. Can I use the bathroom during the study?
Yes, you can use the bathroom during the study as many times as you need.


Q16. Can I smoke?

All of our facilities are smoke-free

Q17. Can I take a shower after my sleep study?
Yes, each of our rooms have a private washroom/shower fully equipped to meet your needs.  


Post-Study Questions


Q18. How long does it take to get the results back?

It takes 10 to 14 days to get the results back.

Q19. Can I drive after the study and go to work?

Absolutely, the sleep study is completed by 5:00 am – 6:00 am in the morning. If you need to be woken up earlier please notify the technician before going to sleep. Also, you may take your morning shower which is located at your room and simply drive.

Q20. Will there be any follow up appointment after my sleep study?

Depending on the results, will determine if follow up is needed. You will be contacted if needed.

Q21. How do I get the results of my sleep study?

Our Sleep Center coordination team will provide your sleep study report to the physician who ordered your test.

Q22. What happens after my sleep study?

The next day all the information will be collected from your sleep study. Our Pulmonologist will analyze the information and prepare a report that will be sent to your doctor. 



Q23. What if I have special inquiries?

Please call our office at 708-737-7498 between 8:00 am to 04:00 pm, Monday through Friday. We will try to accommodate your needs and answer any questions you may have about the sleep testing process.




I am so glad Dr Alzein kept on me to get the sleep study done. I now sleep through the night and feel much better. I no longer fall asleep during the day and have a lot more energy. I also eat less and am losing weight.

N. Donovan Larry Beske

I came to Sleep Center with Tiredness, Dr. Alzein Suggested that tiredness is due to sleep apnea, I have been tested positive for that , now the CPAP machine has changed my daily activity level, I am able to wake up rested without any alarm, and I have become more productive through my day.

Colleen P.

Dr. Alzein is an extremely competent physician who is a good listener, patient, and genuinely kind. I admire Dr. Alzein for always being humble and treating everyone he encounters with respect.

Christine Casiello

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