Analysis of risk factors between subgroups
Two studies did not identify the severity of OSA as a risk factor for
complications (10, 11), however one study did report that patients with
an AHI ≥ 22 and a BMI ≥ 30 were more likely to require oxygen in PACU
(14). A few studies have reported severe OSA among patients who had
desaturations but due to the small numbers, no statistical analyses were
performed (7, 8, 12). Patients who had post-PACU complications also had
a higher incidence of co-morbid illness (p=0.03) and multiple
comorbidities (p=0.02) (14). One study identified that patients who had
concurrent nasal and palatopharyngeal surgery were more likely to be
admitted (p=0.02) (12).