Sleep Study FAQ: 8 Common Questions

1. What is a sleep study?

A sleep study, also known as a polysomnogram, is a non-invasive test that records your body’s activity while you sleep. It monitors brain waves, oxygen levels, heart rate, breathing patterns, and body movements to diagnose sleep disorders like sleep apnea, insomnia, and restless legs syndrome.

2. Why do I need a sleep study?

If you experience symptoms like excessive daytime sleepiness, loud snoring, frequent awakenings, or breathing problems during sleep, a doctor may recommend a sleep study to identify any underlying sleep disorders that could affect your health and quality of life.

3. What happens during a sleep study?

During a sleep study, sensors are placed on your body to monitor various physiological signals while you sleep. These include:

• Electrodes on your scalp to track brain activity

• Belts around your chest and abdomen to measure breathing

• A pulse oximeter on your finger to monitor oxygen levels Technicians observe your sleep in real-time from another room, ensuring accurate data collection.

4. Will I be able to sleep during the study?

Many people are concerned they won’t be able to sleep well in a lab environment. However, the sleep study is designed to capture typical sleep behavior, and even a few hours of sleep can provide sufficient data for diagnosis. The testing room is usually quiet, comfortable, and private to help you sleep.

5. Do I need to stay overnight for the sleep study?

Most sleep studies are done overnight in a sleep center or hospital. However, in some cases, a home sleep apnea test (HSAT) can be performed. This is a simpler, at-home version used to diagnose sleep apnea, though more complex sleep disorders often require in-lab testing.

6. Is a sleep study uncomfortable?

While having sensors attached might feel unusual at first, they are designed to be as comfortable and non-intrusive as possible. Most people adjust quickly and can sleep with minimal disruption. The technicians also ensure the setup is secure but not uncomfortable.

7. How should I prepare for a sleep study?

Here are a few tips to prepare:

• Avoid caffeine and alcohol on the day of your study.

• Wash your hair and avoid using products like gels or oils.

• Bring comfortable pajamas and any items you need for your bedtime routine, like a pillow or book.

• Let the staff know if you are on any medications that could affect your sleep.

8. When will I get the results?

The results of your sleep study are typically available within one to two weeks. A sleep specialist will analyze the data and send a report to your doctor, who will discuss the findings with you and recommend any necessary treatments or lifestyle changes based on your diagnosis.