Hypothesis
Participants' overall satisfaction is better using Air-Mini CPAP compared to
Airsense CPAP machine.
There is no difference in terms of AHI reduction and average 95th centile pressure
required between AirMini CPAP compared to Airsense CPAP machine.
There will be positive correlation between overall satisfaction and AHI reduction
for Air-Mini CPAP compared to Airsense CPAP machine.
There is improvement in air leak, comfort, compactness and maintenance in AirMini
CPAP machine compared to AirSense CPAP.
This is a prospective cross over trial study of group of patients with moderate to severe
OSA based on the severity of the AHI.
This study will be conducted for all moderate to severe OSA participants in Hospital
Canselor Tuanku Muhriz (medical and non-medical department) between September 2024 to
December 2026.
This is a cross over trial that includes patients with medium to high risk of OSA
according to STOPBANG score. Once these group of participants are selected, consent will
be taken from them to go through a scheduled sleep study. Diagnosis is established after
AHI score is concluded from the polysomnographic study. Those who are diagnosed with
moderate to high AHI score will be recruited in this study. All subjects will be given a
CPAP trial using both AirSense and AirMini model for 7 days each device. Upon
recruitment, the subject will be randomised using 1:1 block randomisation either to
receive AIrsense 10 CPAP machine or Air-mini CPAP machine.
Those participants that use AirSense CPAP machine first for 7 days will be given a set of
Questionnaire at the end of 7th day of the trial. Subsequently, they will be switch to
use Air-Mini CPAP machine for another 7 days and the same set Questionnaire will be given
on the 7th day of the trial. The type of the interface used will be based on subject's
preferences, i.e., full face mask / nasal masak / nasal pillow, during the initial 1 - 2
days of CPAP trial. The same interface as per subject's preferences will be used
throughout the CPAP trials for both AirSense as well as Airmini CPAP machine.
The Questionnaire given comprises of a 100mm Visual Analogue Score (VAS) for: 1) Overall
satisfaction, 2) Air Leak, 3) Comfort, 4) Compactness & Portability, 5) Maintenance &
Configuration.
The data collected will be analyzed using SPSS Version 27.
This is a cross-sectional prospective study; hence the sample size calculation will be
based on Machin et al. (2018) The sample size decided for this study was 40 subjects.
Considering and taking into account of about 10% dropout / missing data, hence the total
sample size that will be recruited for this study are 50 subjects.