Center for Sleep Disorders

A sleep study or a polysomnogram (PSG) is a comprehensive test used to diagnose sleep disorders. A PSG is performed overnight in the sleep laboratory. It provides valuable data for diagnosing conditions like sleep apnea, narcolepsy, restless leg syndrome, and other sleep-related issues. For Chong Hua Hospital Cebu: The Sleep Laboratory is located on the 11th floor of Building AB. You will stay in a dimly lit room equipped with a comfortable bed and furnishings. There will be no other patients in the room with you. For Chong Hua Hospital Mandaue: The Sleep Laboratory is located on the 12th floor, Room 1223, of the Hospital Building.

Diagnostic Overnight Polysomnography (PSG): A Diagnostic Overnight Polysomnography (PSG) is a sleep study conducted overnight to monitor and record various physiological parameters while you sleep. During the test, sensors and electrodes are placed on your scalp, face, chest, limbs, and sometimes other parts of the body. These sensors measure: Brain activity (through EEG, or electroencephalography) Eye movements (used to identify sleep stages) Heart rate (through electrocardiogram or ECG) Breathing patterns (measured by airflow sensors and a chest belt) Blood oxygen levels (monitored through a pulse oximeter) Leg movements (detected by sensors placed on your legs) The goal of a Diagnostic Overnight PSG is to provide detailed information about your sleep patterns and to help identify any sleep disorders that may be affecting your health and well-being. The results help doctors create an appropriate treatment plan tailored to your specific condition. Split-night PSG with CPAP Titration: A Split-night PSG with CPAP Titration is a type of sleep study that is typically performed when moderate to severe sleep apnea is suspected. It combines the diagnostic process of a standard polysomnography (PSG) with a CPAP titration to determine the appropriate air pressure needed to treat the condition. This is the protocol: First Half of the Night (Diagnosis): During the first half of the night, a standard PSG is conducted to diagnose the severity of sleep apnea. This involves monitoring brain activity, oxygen levels, heart rate, breathing patterns, and other physiological functions during sleep. The goal is to identify the presence and severity of sleep apnea events, such as pauses in breathing. Second Half of the Night (CPAP Titration): If sleep apnea is diagnosed and moderate to severe levels are confirmed, the second half of the night focuses on determining the optimal pressure for Continuous Positive Airway Pressure (CPAP) therapy. CPAP is a common treatment for obstructive sleep apnea. The sleep technician adjusts the CPAP machine to find the correct air pressure that prevents the collapse of the airway and keeps it open during sleep. The air pressure is administered through a mask that fits over the nose and/or mouth, allowing you to breathe freely and sleep without interruptions. By the end of the study, the healthcare provider will have both diagnostic information and the required CPAP pressure settings to manage your sleep apnea effectively. This combined approach helps streamline the diagnosis and treatment of sleep apnea in one overnight study. Therapeutic Study: A CPAP Titration Study (or Therapeutic Study) is a sleep test that helps determine the right air pressure to treat sleep apnea using a CPAP machine. The CPAP machine helps you breathe easily while you sleep by keeping your airway open. If you have sleep apnea, your airway can get blocked during sleep, causing you to stop breathing. This study helps figure out the best pressure level on the CPAP machine to prevent those breathing pauses. You spend the night in a sleep lab, where the CPAP machine is used. The sleep technician adjusts the air pressure from the CPAP machine to find the right level that keeps your airway open. While you sleep, they monitor how well you breathe and if your oxygen levels are steady. By the end of the night, the technician will know the best air pressure for your CPAP machine. This way, when you use the CPAP at home, it will be set to the right pressure to keep you breathing well and sleeping soundly. This study helps find the perfect setting for your CPAP machine, so you can sleep better and treat your sleep apnea. The Biggest Reason for a Sleep Study – Excessive Daytime Sleepiness:

To schedule a sleep study, you must first see your physician, who will need to order the study. We cannot proceed with any sleep studies without a doctor’s prescription. Once you have the order, you can contact us to schedule an appointment at a time that works best for you. If you do not have a physician yet, you may be referred to the Pulmonary Unit. The unit will coordinate with our sleep physicians. The Pulmonary Unit is located on the 3rd floor of Building C. You can contact them at 0968-875-1324 or through the CHH Fuente Trunk Line at (032) 255-8000, local 76240. For cancellation and rescheduling, please make every effort to keep your scheduled appointment. A sleep technician and a room have been reserved specifically for you. If you need to cancel or reschedule, kindly notify us at least three days in advance to avoid any inconvenience.

It usually takes about one to two weeks for the results to be processed. After the study, a sleep technician will score every minute of the data, and a sleep doctor will review it for final interpretation. The doctor will assess whether a sleep disorder is present, determine the type of disorder, and create a treatment plan if needed.

You can claim your results at the Pulmonary Unit. For patients from outside Cebu or the province, the results will be sent to your email by the Unit Manager.

The sleep study typically begins around 8:00 PM and continues until approximately 6:00 AM. While there is no set time for you to fall asleep, we encourage you to go to sleep as soon as possible to maximize the amount of sleep time available for observation.

Before the Procedure: Take a shower before going to the sleep lab Avoid using gels, creams, oils, or any other hair products. Do not apply facial creams, body lotion or body cream. Wear or bring comfortable sleepwear. Avoid napping during the day. Refrain from engaging in strenuous physical activities for at least 6 hours before the procedure. Avoid drinking caffeinated or alcoholic beverages. Shave any facial hair at the chin area. Do not take sleeping pills. Have dinner before heading to the sleep lab. Bring your doctor's prescription. Bring the approved charge slip. Only pediatric patients are allowed to have family members stay with them in the room of the sleep laboratory. If you have insurance, please secure a valid LOA (Letter of Authorization) before the procedure date.

The purpose of a sleep study is to collect data during your sleep, such as brain activity, heart rate, and breathing patterns. The following equipment will be used: Electrodes will be attached to your scalp (forehead, behind the ears, around the eyes, and below the chin) to monitor brain activity, eye movement, and muscle tone. These electrodes are secured with adhesive paste and cotton. Electrodes on your legs, below the knees, will monitor leg and body movements. Chest belts will be placed around your chest and abdomen to monitor nasal breathing. Nasal tubing, similar to oxygen tubing, will be used to monitor nasal breathing. A soft finger wrap will measure your oxygen levels throughout the night.

For most patients, the sleep study is at least partially covered by their insurance policies. However, it’s important to verify the details with your insurance company or policy provider. Many insurance companies require pre-approval for sleep studies.