Polysomnography
PSG
Description
"Polysomnography" is an overnight sleep study that tracks your brain activity, breathing, heart rate, oxygen levels, and body movements while you sleep. It’s one of the most comprehensive tools for diagnosing conditions like sleep apnea, insomnia, and restless leg syndrome. During the test, sensors are placed on your skin while you rest in a sleep lab. Results reveal disruptions affecting sleep quality. Doctors use the data to tailor care plans that may include CPAP therapy, medication, or further evaluation.
Category
Brain Function
Procedure
Non-Invasive
Sample Type
No biological sample is needed for this test.
Units
Not Applicable
Procedure Category
Measure
Test Group
Sleep Function Group
Test Group Description
Sleep Function Group: This group of tests evaluates sleep quality and function, providing insights into sleep architecture and potential disruptions for comprehensive sleep health assessment.
Optimal Range
For All Individuals:
Result: Negative: No abnormalities detected.
Normal Range
For All Individuals:
Result: Negative: No abnormalities detected.
Results That Differ From The Norm (Direct and Indirect Causes)
Abnormal results may indicate:
Alcohol consumption
Asthma (Chronic respiratory condition causing airway inflammation)
Central sleep apnea (Breathing pauses during sleep due to central nervous system dysfunction)
Chronic obstructive pulmonary disease (Progressive lung disease leading to airflow obstruction)
Chronic pain
Circadian rhythm ...
Key Reasons For Testing
Diagnosis of Sleep Disorders: This is the test’s definitive purpose and its most critical clinical use.
Assessment of Sleep Architecture: Directly evaluates sleep stages, cycles, and overall sleep quality, integral to many diagnoses.
Evaluation of Breathing Patterns: Identifies respiratory-related sleep disorders like obstructive and central sleep apnea.
Titration of Continuous Positive Airway Pressure (CPAP): Essential for determining the optimal CPAP settings in patients with obstructive sleep apnea.
Health Status Conditions It May Be Used To Assess
Currently, this test is not directly associated with any conditions listed on the Health Status page. However, it may be included as part of a broader set of tests linked to specific health conditions.
Some Prominent Medical Labs That May Offer This Test
Please note that this particular test has not been associated with any of the listed prominent medical labs. We recommend enquiring with your private physician or nearest hospital to determine where this specific test can be performed.
References
Important Note
Any medical procedure yielding results outside the norm may be directly or indirectly linked to the conditions outlined on this page. Various factors, including genetics, medication and supplement usage, recent illnesses, pregnancy, pre-test eating, smoking, and stress, can impact the test's outcome. Additionally, factors like false positives, false negatives, inaccurate analyses, and others can influence results.
Reference ranges, which help healthcare professionals interpret medical tests, may vary depending on age, gender, and other factors. They may also differ between laboratories due to variations in instruments and methods used. Optimal ranges are designed for preventive purposes, aiming to identify trends and potential risks early, while normal ranges reflect conventional laboratory values indicating no current disease or pathology. Your healthcare practitioner may have specific reasons for testing that deviate from the usual or may interpret results differently based on individual circumstances. Proper interpretation typically involves considering clinical findings and other diagnostic tests. Hence, it is crucial to provide your healthcare professionals with a comprehensive medical history, consult with them for result interpretation, and follow their guidance for potential re-testing or additional diagnostics.
Disclaimer
This content is provided solely for informative and educational purposes. It is not intended as a substitute for medical advice or treatment from a personal physician. Regarding the interpretation of their medical test results and/or specific health questions, it is recommended that all readers and viewers consult their physicians or other qualified health professionals. The publisher is not responsible for any adverse health effects that may result from reading or following the information in this educational content. Before beginning any nutrition, supplement, or lifestyle program, all viewers, especially those taking prescription or over-the-counter medications, should consult their physician or health care practitioner.
Please note that while prominent lab names are included in this content, we cannot guarantee that these labs offer all the tests mentioned. For confirmation, individuals should contact the labs directly or consult their medical practitioners. The information provided reflects general knowledge at the time of publication and may not include recent updates or emerging research. Readers should verify details with qualified professionals to ensure the most up-to-date and accurate guidance.
[1] Markun LC, Sampat AJ. Clinician-focused overview and developments in polysomnography. Curr Sleep Med Rep. 2020;6(2):64-73.
[2] Sharma S, Olgers K, Sharma S, et al. Artificial intelligence augmented home sleep apnea testing device study (AISAP study). PLoS One. 2021;16(9).
[3] Bhattacharjee R, Kheirandish-Gozal L, Spruyt K, et al. Polysomnographic characteristics of adenotonsillectomy outcomes in children with obstructive sleep apnea. Pediatrics. 2010;125(3).
[4] Pavlov YG, Barner C, Müller F, et al. Sleep in disorders of consciousness: behavioral and polysomnographic assessment and therapeutic implications. BMC Med. 2020;18(1):350.
[5] Chervin RD, Burns JW, Ruzicka DL, et al. Electroencephalographic changes during respiratory cycles predict sleepiness in sleep apnea. Am J Respir Crit Care Med. 2005;171(6):652-658.
[6] Berry RB, Brooks R, Gamaldo CE, et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications. Version 2.5. American Academy of Sleep Medicine. 2018.
[7] Iber C, Ancoli-Israel S, Chesson AL Jr, Quan SF. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications. American Academy of Sleep Medicine. 2007.
[8] Rechtschaffen A, Kales A. A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages of Human Subjects. U.S. Department of Health, Education, and Welfare Public Health Service – NIH/NIND. 1968.
[9] Carskadon MA, Dement WC. Normal human sleep: an overview. In: Kryger MH, Roth T, Dement WC, eds. Principles and Practice of Sleep Medicine. 5th ed. Elsevier Saunders; 2011:16-26.
[10] American Academy of Sleep Medicine. International Classification of Sleep Disorders. 3rd ed. American Academy of Sleep Medicine. 2014.
[11] Berry RB, Budhiraja R, Gottlieb DJ, et al. Rules for scoring respiratory events in sleep: update of the 2007 AASM Manual for the Scoring of Sleep and Associated Events. J Clin Sleep Med. 2012;8(5):597-619.
[12] Collop NA, Anderson WM, Boehlecke B, et al. Clinical guidelines for the use of unattended portable monitors in the diagnosis of obstructive sleep apnea in adult patients. J Clin Sleep Med. 2007;3(7):737-747.
[13] Kushida CA, Littner MR, Morgenthaler T, et al. Practice parameters for the indications for polysomnography and related procedures: an update for 2005. Sleep. 2005;28(4):499-521.
[14] Morgenthaler TI, Kapur VK, Brown T, et al. Practice parameters for the treatment of obstructive sleep apnea in adults: the role of positive airway pressure and oral appliances. Sleep. 2006;29(8):1031-1035.
[15] Sateia MJ. International classification of sleep disorders-third edition: highlights and modifications. Chest. 2014;146(5):1387-1394.