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Table 2 Baseline oximetry and OSA screening

From: The prevention of delirium in elderly surgical patients with obstructive sleep apnea (PODESA): a randomized controlled trial

 

Overall

APAP

Routine

n

220

106

114

CT90 (median, [IQR])

4.8 [1.4, 15.1]

4.4 [1.5, 12.8]

5.2 [1.1, 15.3]

Min. SpO2 (mean, SD)

75.9 (10.8)

75.2 (12.6)

76.6 (8.7)

Average SpO2 (mean, SD))

92.5 (2.1)

92.5 (2.4)

92.5 (1.8)

ODI (events/hr) (median [IQR])

19.3 [11.4, 28.0]

19.6 [12.2, 28.0]

18.7 [11.1, 28.2]

Pre-op. diagnosis and treatment of OSA (n, %)

 No

209 (95.0)

99 (93.4)

110 (96.5)

 Yes—untreated

11 ( 5.0)

7 ( 6.6)

4 ( 3.5)

 Yes—treated

0 ( 0.0)

0 ( 0.0)

0 ( 0.0)

Screening AHI (n, %)

 5–14.9 (mild)

73 (33.2)

33 (31.1)

40 (35.1)

 15–29.9 (moderate)

92 (41.8)

46 (43.4)

46 (40.4)

 ≥ 30 (severe)

55 (25.0)

27 (25.5)

28 (24.6)

  1. APAP auto-titrating positive airway pressure, CT90 cumulative time oxygen saturation less than 90%, IQR interquartile range, SpO2 oxygen saturation, SD standard deviation, OSA obstructive sleep apnea, AHI apnea hypopnea index