Journal
DIAGNOSTICS
Volume 13, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/diagnostics13213323
Keywords
sleep apnoea; cardiovascular disease; pulse oximetry; hypoxia
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Obstructive sleep apnoea is a sleep disorder that can lead to cardiovascular disease and other complications. The traditional diagnostic parameter is insufficient for predicting cardiovascular disease, so new parameters and computational methods are needed to improve accuracy.
Obstructive sleep apnoea (OSA) is a sleep disorder with repetitive collapse of the upper airway during sleep, which leads to intermittent hypoxic events overnight, adverse neurocognitive, metabolic complications, and ultimately an increased risk of cardiovascular disease (CVD). The standard diagnostic parameter for OSA, apnoea-hypopnoea index (AHI), is inadequate to predict CVD morbidity and mortality, because it focuses only on the frequency of apnoea and hypopnoea events, and fails to reveal other physiological information for the prediction of CVD events. Novel parameters have been introduced to compensate for the deficiencies of AHI. However, the calculation methods and criteria for these parameters are unclear, hindering their use in cross-study analysis and studies. This review aims to discuss novel parameters for predicting CVD events from oximetry signals and to summarise the corresponding computational methods.
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