The use of the sleep apnea-specific hypoxic burden to predict obstructive sleep apnea hypopnea syndrome: Evidence from a large cross-sectional study

Independent relationship between sleep apnea-specific hypoxic burden and glucolipid metabolism disorder: a cross-sectional study

“…The SASHB was determined by assessing the respiratory event-associated area under the desaturation curve commencing from a pre-event baseline. Our SASHB calculations are based on those of Dr. Azarbarzin’s research team, but the methods are not identical, differing principally in the definition of the pre-event SpO 2 baseline level [ 15 ]. For each apnea or hypopnea event, the Azarbarzin team defined the pre-event baseline saturation as the maximum SpO 2 during the 100 s prior to the end of the event; in our study, the maximum value at the start point of the SpO 2 trend evident in the search window at the time of an apnea or hypopnea event served as the SpO 2 baseline level.…”

“…In our previous study [ 15 ], we found Sleep Apnea-Specific Hypoxic Burden (SASHB), a new pulse oximetry (SpO 2 )-related index and defined as the sum of the areas under the baseline SpO 2 curves corresponding to respiratory events, has shown promise in identifying people at risk of OSA in Chinese Han population. In addition to quantifying the frequency of respiratory events, SASHB captures the depth and duration of hypoxemia associated with OSA.…”