Screening for OSA (ApneaLink)
ResMed is dedicated to facilitating Obstructive Sleep Apnoea (OSA) screening at home and in different care settings.
Our three-step screening process is innovative and simple:
- Assess – recognise and identify some of the common symptoms of Obstructive Sleep Apnoea (OSA)
- Screen – ask your patient to complete a simple 5-question sleep apnoea test
- Refer – recommend a sleep study for your patient to monitor and determine the severity of his or her OSA
Our devices for screening OSA incorporate the latest technology. Sleep studies, also called polysomnographies (PSG), monitor sleep, respiration, cardiac rhythm, snoring, limb movements and body position.1 Since PSG is labour intensive, time consuming and costly with limited availability2, ResMed offers effective devices that can be used from the comfort of a patient’s home.
One of the premier tools for home screening is ApneaLink™ Air, a compact and lightweight home sleep testing device capable of recording up to five channels of information – respiratory effort, pulse, oxygen saturation, nasal flow and snoring. The ApneaLink software allows analysis of the AHI, oximetry, snore and flow limitation. Data is automatically analysed and the user is provided with a report. Plus, ApneaLink Air is compatible with our AirViewTM, a comprehensive diagnostic software solution for sleep facilities.
ApneaLink technology has been validated in 19 clinical studies worldwide, 17 of which compared it to simultaneous PSG. These studies show a pooled sensitivity of 89% and pooled specificity of 75% using a cut-off AHI=5/h. High diagnostic accuracy was obtained for cut-off AHI=10/h (pooled sensitivity of 89%, pooled specificity of 89%). Also high diagnostic accuracy was obtained for cut-off AHI=15/h (pooled sensitivity of 88%, pooled specificity of 91%).
One study included a sufficient number of patients with Central Sleep Apnoea of type CSR 6. The authors concluded that ApneaLink equipped with a screening classifier for CSR was able to detect this kind of sleep-disordered breathing (SDB) with high diagnostic accuracy.
In addition, ApneaLink has been used in 5 OSA prevalence studies, and as an OSA screening tool in 6 studies. Since ApneaLink is easy to handle, and relatively simple, it is a good device for screening large populations in a short period of time. ApneaLink has been used in diabetes 3,4, heart failure5 and pulmonary rehabilitation patients.6