In-person versus video hookup instructions: a comparison of home sleep apnea testing quality

Study Objectives:

The high prevalence of obstructive sleep apnea (OSA) in the general population makes diagnosing OSA a high priority. Typically, patients receive in-person instructions to hook up the home sleep apnea test (HSAT) devices. Using recorded video instructions would save healthcare personnel time and improve access to OSA diagnostics for patients in remote areas. The aim of this study was to compare the quality of HSAT recordings when using in-person and video hookup instructions in a randomized study.

Methods:

A total of 100 patients aged 18 to 70 years with suspected OSA were randomized to receive either in-person or video hookup instructions for the Nox T3 device (Nox Medical, Reykjavik, Iceland). The overall quality of the resulting sleep studies was analyzed by determining the number of technically invalid studies. The recording quality of four sensors (pulse oximeter, nasal cannula, thorax and abdominal respiratory inductance plethysmography belts) was assessed by checking for signal artifacts.

Results:

No significant difference was found between the two groups in any quality index. Only 1 (2%) and 2 (3.9%) sleep studies were technically invalid in the in-person and video instructions group, respectively. The average ± standard deviation recording quality of the four sensors combined was 94.8% ± 13.6% for the in-person and 96.0% ± 11.0% for the video instructions group.

Conclusions:

This study found no difference in HSAT recording quality between the two groups. Video hookup instructions are therefore viable, and an important step towards a telemedicine-based way of diagnosing OSA.

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