Length of Stay in Ambulatory Surgical Oncology Patients at High Risk for Sleep Apnea as Predicted by STOP-BANG Questionnaire

Table 1

Patient characteristics.

		Percentage
BMI (kg/m^2)
Mean ± SD	28.5 ± 5.7
Median (min to max)	27.3 (16.5 to 51)
Neck circumference (cm)
Mean ± SD	39.8 ± 4.6
Median (min to max)	40 (28 to 54)
PACU LOS (minutes)
Mean ± SD	372.4 ± 433.0
Median (min to max)	137.5 (39 to 1667)
Procedure time (minutes)
Mean ± SD	61.7 ± 24.2
Median (min to max)	55 (26 to 256)
Oxygen saturation below 93% (count)
Mean ± SD	3.7 ± 3.8
Median (min to max)	2 (1 to 18)
STOP-BANG items
Snoring
No	305	75.5
Yes	99	24.5
Tiredness
No	227	56.2
Yes	177	43.8
Observed apneas
No	361	89.4
Yes	43	10.6
High blood pressure
No	169	41.8
Yes	235	58.2
BMI > 35 kg/m^2
No	357	88.4
Yes	47	11.6
Age > 50 years
No	40	9.9
Yes	364	90.1
Neck > 40 cm
No	234	57.9
Yes	170	42.1
Gender
Female	90	22.3
Male	314	77.7
STOP-BANG criteria
Low risk (<3)	100	24.8
High risk (≥3)	304	75.2
Bicarbonate ≥ 28 mmol/L
No	194	48
Yes	210	52

BMI, body mass index; SD, standard deviation; PACU, postanesthesia care unit. 404 patients provided complete STOP-BANG information to derive a total score.