Evaluation of the Accuracy of SNAP Technology Sleep Sonography in Detecting Obstructive Sleep Apnea in Adults Compared to Standard Polysomnography

Laboratory versus Portable Sleep Studies: A Meta‐Analysis

“…Each horizontal line represents one study and the width of the line the CI surrounding the study estimate. The horizontal line crosses the null (the y‐axis) in nine studies indicating no significant difference in the RDI values between in‐laboratory and home polysomnography 1–8 ; however, the point estimate on seven of these nine studies observed higher RDI values on average on in‐laboratory polysomnography 1,4–8 . Three studies observed that the RDI measured by portable sleep studies was significantly lower that that measured by in‐laboratory polysomnography 9–11 .…”

“…A total of 27 studies comparing portable and in‐laboratory polysomnography were reviewed. Of these studies, 11 provided sufficient data to allow a comparison between polysomnography methods with regard to the principal outcome measure RDI 1–11 . An additional seven studies were included that provided data on one or more of the secondary outcome variables (low O 2 saturation, sleep time, rate of inadequate recordings, cost) 12–18 Table I.…”

“…The RDI values found on in‐laboratory polysomnography were compared with the values obtained at the time of portable examination. A graph depicting the results of the 12 studies that include RDI values is shown in Figure 1 1–11 . Again, the study by Dingli et al 5 was separated into two parts because each study was performed on independent samples in different settings.…”

Nasal pressure recordings to detect obstructive sleep apnea

“…No electroencephalography signals are monitored. Many of these devices use different methodologies to evaluate sleep apnea severity, which include oximetry alone; [5][6][7] oximetry and nasal airflow [8][9][10][11]; peripheral arterial tonometry, oximetry, and actigraphy [12,13]; airflow, body position, wrist actimetry, pulse rate, and oxygen desaturation [14]; oral and nasal thermistor [15]; microphone and nasal airflow [16]; or tracheal sound analysis [17]. These modalities are feasible for an ambulatory setting in which physicians treat sleep-related breathing disorders.…”

Comparison of empirical continuous positive airway pressure (CPAP) treatment versus initial portable sleep monitoring followed by CPAP treatment for patients with suspected obstructive sleep apnoea

“…8,9 In recent years, four types of diagnostic devices have become available for managing patients suspected of OSAS, and these vary by the numbers of channels recording physiological parameters. [11][12][13][14][15] The established standard treatment of OSA is continuous positive airway pressure (CPAP), 16 which has also been used in the diagnostic mode as a diagnostic test bypassing PSG in some studies. [11][12][13][14][15] The established standard treatment of OSA is continuous positive airway pressure (CPAP), 16 which has also been used in the diagnostic mode as a diagnostic test bypassing PSG in some studies.…”