Sleep apnea other diagnostic studies: Difference between revisions
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Oximetry, which may be performed overnight in a a patient's home, is an easier alternative to formal sleep study (polysomnography.
- In one study, normal overnight oximetry was very sensitive and so if normal, sleep apnea was unlikely.[1] In addition, home oximetry may be equally effect in guiding prescription for automatically self-adjusting continuous positive airway pressure.[2]
- Another study found that overnight oximetry, defining abnormal as 15 or more 4% desaturations/hour, was very specific, but not sensitive.[3]
- Sensitivty of overnight oximetry is improved by using a 3% desaturation in oxygen.[4] and lowering the ODI to 5 per hour.[5]
- Oximetry may identify some patients whose outcomes are not improved by adding polysomnography.[6]
References
- ↑ Sériès F, Marc I, Cormier Y, La Forge J (1993). "Utility of nocturnal home oximetry for case finding in patients with suspected sleep apnea hypopnea syndrome". Ann Intern Med. 119 (6): 449–53. PMID 8357109.
- ↑ Whitelaw WA, Brant RF, Flemons WW (2005). "Clinical usefulness of home oximetry compared with polysomnography for assessment of sleep apnea". Am J Respir Crit Care Med. 171 (2): 188–93. doi:10.1164/rccm.200310-1360OC. PMID 15486338. Review in: ACP J Club. 2005 Jul-Aug;143(1):21
- ↑ Ryan PJ, Hilton MF, Boldy DA, Evans A, Bradbury S, Sapiano S; et al. (1995). "Validation of British Thoracic Society guidelines for the diagnosis of the sleep apnoea/hypopnoea syndrome: can polysomnography be avoided?". Thorax. 50 (9): 972–5. PMC 1021311. PMID 8539678.
- ↑ Nigro CA, Dibur E, Rhodius E (2012). "Accuracy of the clinical parameters and oximetry to initiate CPAP in patients with suspected obstructive sleep apnea". Sleep Breath. 16 (4): 1073–9. doi:10.1007/s11325-011-0603-0. PMID 22009031.
- ↑ Douglas NJ, Thomas S, Jan MA (1992). "Clinical value of polysomnography". Lancet. 339 (8789): 347–50. PMID 1346422.
- ↑ Mulgrew AT, Fox N, Ayas NT, Ryan CF (2007). "Diagnosis and initial management of obstructive sleep apnea without polysomnography: a randomized validation study". Ann Intern Med. 146 (3): 157–66. PMID 17283346. Review in: Evid Based Med. 2007 Oct;12(5):148 Review in: ACP J Club. 2007 Sep-Oct;147(2):45