Why the study?
Early postoperative hypoxemia is a frequent anesthetic complication, raising concerns about risks related to the time anesthesia ends, particularly during emergency surgery at nighttime.
Early postoperative hypoxemia is highly prevalent (42.3%) among adult patients undergoing emergency surgery under general anesthesia, with nighttime anesthesia ending being a significant risk factor.
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Nighttime emergency cases may elevate EPH risk; leaves open whether anesthesia timing is causal in larger cohorts.
Berhanu et al. (2022) studied this question.