Use of Ambulatory Overnight Oximetry to Investigate Sleep Apnea in a General Internal Medicine Practice

Martinez, Matthre W.; Rodysill, Kirk J.; Morenthaler, Timothy I.
April 2005
Mayo Clinic Proceedings;Apr2005, Vol. 80 Issue 4, p455
Academic Journal
OBJECTIVE: To examine how clinical factors and results from ambulatory overnight oximetry related to recommendations for further sleep evaluation in patients with clinically suspected obstructive sleep apnea syndrome. PATIENTS AND METHODS: We reviewed 100 medical records selected randomly from 375 consecutive patients for whom ambulatory overnight oximetry had been ordered by Internists and completed between September 1, 2001, and May 1, 2002. We analyzed relationships among clinical information, oximetry results, resultant recommendations, and patient follow-up data. RESULTS: Only 21 of 100 patients had normal results from ambulatory overnight oximetry; 5 were referred for further sleep consultation. Abnormal results from ambulatory overnight oximetry were seen in 79 patients, but only 51 were referred for further sleep evaluation. Abnormal results from ambulatory overnight oximetry were associated with only a small Increased likelihood of referral (likelihood ratio, 2.7; confidence interval, 1.2–6.0). Those with an oxygen desaturation Index (number of desaturation events per hour of recording time) of greater than 15 received sleep consultation at a median of 8 days after completion of oximetry, whereas those with an oxygen desaturation index of 6 to 10 were evaluated in a median of 42 days (P=.60). All 17 patients who had minimum oxygen saturation of less than 80% were referred for further evaluation. CONCLUSIONS: Abnormal results from ambulatory overnight oximetry per se may not substantially Influence internist referral of patients with clinically suspected sleep apnea for further sleep evaluation. Rather, severity of oximetry abnormalities is used along with other patient-related factors and sleep study accessibility to prioritize the need and urgency of further evaluation.


Related Articles

  • Oxygen Saturation and RR Intervals Feature Selection for Sleep Apnea Detection. Ravelo-García, Antonio G.; Kraemer, Jan F.; Navarro-Mesa, Juan L.; Hernández-Pérez, Eduardo; Navarro-Esteva, Javier; Juliá-Serdá, Gabriel; Penzel, Thomas; Wessel, Niels // Entropy;2015, Vol. 17 Issue 5, p2932 

    A diagnostic system for sleep apnea based on oxygen saturation and RR intervals obtained from the EKG (electrocardiogram) is proposed with the goal to detect and quantify minute long segments of sleep with breathing pauses. We measured the discriminative capacity of combinations of features...

  • Diagnostic approaches to respiratory sleep disorders. Riha, Renata L. // Journal of Thoracic Disease;Aug2015, Vol. 7 Issue 8, p1373 

    No abstract available.

  • News to Snooze. Kohlstadt, Ingrid // Townsend Letter;Oct2011, Issue 339, p92 

    The article highlights factors that contribute to sleep disturbance. Sleep apnea mostly disturbs sleep as the patient suffering from it are awakened due to lack of oxygen entering the body. The calf pain associated with low iron status and smoking called restless leg syndrome is another factor...

  • Continuous Pulse Oximetry in Sleep Diagnostics. Altman, Cindra // AARC Times;Jun2015, Vol. 39 Issue 6, p15 

    The article discusses the key role played by continuous pulse oximetry in the diagnosis and assessment of sleep-related breathing disorders, specifically obstructive sleep apnea (OSA). It claims that OSA is linked with significant morbidity and mortality like cancer-related deaths, as well as...

  • What can be done in primary care?  // New Zealand Doctor;11/17/2004, p28 

    Discusses things that can be done in primary care for a patient with obstructive sleep apnea (OSA). Correctable contributing factors of OSA; Things that can be recommended for patients to avoid; High frequency oximetry or flow sensing devices that can be used as case finding tools.

  • Keeping a Pulse on Oximetry. Valenza, Tor // Sleep Review;Apr2008, Vol. 9 Issue 3, p42 

    The article discusses the market trends on the development of pulse oximetry for the diagnosis of sleep-disordered breathing. Manufacturers a re incorporating faster signal averaging time into their new pulse oximeters and have been developing ways to reduce motion artifact during sleep....

  • Sites on the subject of sleep apnoea. Barnard, Keith // GP: General Practitioner;9/29/2006, p35 

    The article presents the author's views on several web sites, which offer information related to sleep apnea syndromes. The diagnosis section of the web site, www.sign.ac.uk, offering the guidelines of the Scottish Intercollegiate Guidelines Network includes information related to...

  • Reliability of home-based physiological sleep measurements in snoring and non-snoring 3-year olds. Gill, Amelia; Schaughency, Elizabeth; Gray, Andrew; Galland, Barbara // Sleep & Breathing;Mar2013, Vol. 17 Issue 1, p147 

    Purpose: To study snoring and non-snoring 3-year olds in their own homes and to establish reference values and night-to-night variability of physiological measurements taken during sleep. Methods: One hundred and sixty-six children, aged 3.2-4.0 years, identified as at high ( n = 83, M/F =...

  • Novel mathematical processing method of nocturnal oximetry for screening patients with suspected sleep apnoea syndrome. Poupard, Laurent; Philippe, Carole; Goldman, Michael; Sartène, Richard; Mathieu, Marc // Sleep & Breathing;Jun2012, Vol. 16 Issue 2, p419 

    Aim: Polysomnography (PSG) is the current standard for diagnosing sleep apnea syndrome (SAS). A reliable test would be useful to reduce the considerable resources required for PSG. Methods: We developed a new mathematical analysis, which quantifies amplitude variations of pulse oximetry (SpO)...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics