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Home Study Validation |
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| Our recording system is among the most highly validated portable systems available. It accurately measures the necessary physiological parameters to diagnose obstructive sleep apnea syndrome (OSAS) as determined by the American Academy of Sleep Medicine. The data include heart rate, respiratory effort (abdomen & thorax), nasal airflow, oxygen saturation, body position, and snoring intensity and frequency.
Home-based sleep testing is now widely accepted in the medical and scientific communities. Veterans Affairs Hospitals, University of California Medical Centers, and Kaiser Permanente Hospitals across the country are utilizing home-based testing. Research has shown that a typical sleep apnea patient can be diagnosed and treated entirely outside the polysomnography laboratory. Moreover, home-based sleep testing is a viable tool for reducing overall costs.
Validity of Empiric Starting CPAP Pressure Determination
There are numerous ways to arrive at a level of pressure with which to begin nasal CPAP therapy. Among these are in-lab manual titrations, the use of auto-titrating CPAP machines, and the use of predictive equations. Sleep Data uses a predictive equation as well as additional clinical parameters to provide a recommended starting CPAP pressure. This equation takes into account three factors: body weight, neck circumference, and apnea severity. We believe that with proper follow up the use of this equation is an excellent way to initiate CPAP therapy. The equation that we use has been shown to predict a starting pressure within 2 cm of H2O of that determined by manual titration in over 90% of the patients assessed.
References – Home Study
1. Skomro, Robert P. et al, Outcomes of Home-Based Diagnosis and Treatment of Obstructive Sleep Apnea. Chest 2010; 138(2):237-263
2. Mulgrew Alan T. et al, Diagnosis and Initial management of Obstructive sleep Apnea without Polysomnography (A Randomized Validation Study). Ann Intern Med. 2007; 146:157-166
3. Masa, Juan f. et al Alternative Methods of Titrating Continuous Positive Airway Pressure. A Large Multicenter Study. Am J Respir Crit Care Med Vol 170. pp 1218-1224, 2004
6. Parra O, Garcia-Esclasans N, Montserrat JM, Garcia Eroles L, Ruiz J, Lopez JA, Guerra JM, Sopena JJ. Should patients with sleep apnea/hypopnea syndrome be diagnosed and managed on the basis of home sleep studies? Eur Respir J, 1997;10:1720-24.
7. Ferber, R. et al, Portable recording in the assessment of obstructive sleep apnea. Sleep. 1994, 17:378-92.
8. Redline, S. et al, Measurement of sleep-related breathing disturbances in epidemiologic studies. Chest: 1991, Nov; 100(5):1281-1286.
9. Emsellem HA, Corson WA, Rappaport BA, Hackett S, Smith LG, Hausfeld JN. Verification of sleep apnea using a portable sleep apnea screening device. South Med J. 1990;83:748-52.
References – Empiric CPAP
10. Fitzpatrick MF, Alloway C, Wakeford TM, MacLean AW, Munt PW, Day AG, Can patients with obstructive sleep apnea titrate their own continuous positive airway pressure? Am J Resir Critical Care Med 2003; 167:716-722.
11. Hoffstein V, Mateika S. Predicting nasal continuous positive airway pressure. Am J Respir Crit Care Med 1994; 150:486-488.
12. Miljeteig H, Hoffstein V. Determinants of continuous positive airway pressure level for treatment of obstructive sleep apnea. Am Rev Respir Dis 1993; 147:1526-30.
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