Tests and diagnosisBy Mayo Clinic Staff
Your doctor may make an evaluation based on your signs and symptoms or may refer you to a sleep disorder center. There, a sleep specialist can help you decide on your need for further evaluation.
Such an evaluation often involves overnight monitoring of your breathing and other body functions during sleep. Home sleep testing may also be an option. Tests to detect sleep apnea may include:
- Nocturnal polysomnography. During this test, you're hooked up to equipment that monitors your heart, lung and brain activity, breathing patterns, arm and leg movements, and blood oxygen levels while you sleep.
Home sleep tests. In some cases, your doctor may provide you with simplified tests to be used at home to diagnose sleep apnea. These tests usually involve measuring your heart rate, blood oxygen level, airflow and breathing patterns. If you have sleep apnea, the test results will show drops in your oxygen level during apneas and subsequent rises with awakenings.
If the results are abnormal, your doctor may be able to prescribe a therapy without further testing. Portable monitoring devices don't detect all cases of sleep apnea, so your doctor may still recommend polysomnography even if your initial results are normal.
If you have obstructive sleep apnea, your doctor may refer you to an ear, nose and throat doctor to rule out any blockage in your nose or throat. An evaluation by a heart doctor (cardiologist) or a doctor who specializes in the nervous system (neurologist) may be necessary to look for causes of central sleep apnea.
Aug. 25, 2015
- Longo DL, et al., eds. Sleep apnea. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: The McGraw-Hill Companies; 2015. http://accessmedicine.com. Accessed May 20, 2015.
- Ferri FF. Sleep apnea, obstructive. In: Ferri's Clinical Advisor 2015: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2015. https://www.clinicalkey.com. Accessed May 20, 2015.
- What is sleep apnea? National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/sleepapnea/. Accessed May 22, 2015.
- Selim BJ, et al. Central sleep apnea — The complex sleep apnea syndrome. Sleep Medicine Clinic. 2014;9:37.
- Bonow RO, et al. Sleep apnea and cardiovascular disease. In: Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 10th ed. Philadelphia, Pa.: Saunders Elsevier; 2015. http://www.clinicalkey.com. Accessed May 20, 2015.
- Strohl KP. Overview of obstructive sleep apnea in adults. http://www.uptodate.com/home. Accessed May 19, 2015.
- Kryger MH, et al. Sleep breathing disorders. In: Principles and Practice of Sleep Medicine. 5th ed. St. Louis, Mo.: Elsevier Saunders; 2011. http://www.clinicalkey.com. Accessed May 20, 2015.
- Adult obstructive sleep apnoea. The Lancet. 2014;383:736.
- Schiza SE, et al. Expiratory positive airway pressure (EPAP) nasal device therapy: A welcome addition to obstructive sleep apnea syndrome therapy. Sleep and Breathing. In press.
- Kryger MH. Management of obstructive sleep apnea in adults. http://www.uptodate.com/home. Accessed May 22, 2015.
- Selim BJ (expert opinion). Mayo Clinic, Rochester, Minn. May 26, 2015.