Polysomnographic assessment of respiratory disturbance during deep propofol sedation for endoscopic submucosal dissection of gastric tumors

Table 1 Patient characteristics and endoscopic submucosal dissection indications

Characteristic/indication	Value (mean ± SD)
Age (yr)	71.4 ± 6.6
Sex (male/female)	6/4
Height (cm)	159.9 ± 8.9
Body weight (kg)	59.2 ± 8.2
Body mass index (kg/m2)	23.6 ± 3.5
Histological type
Well differentiated tubular adenocarcinoma	n = 7
Moderately differentiated tubular adenocarcinoma	n = 1
Signet-ring cell carcinoma	n = 2
Invasion depth: mucosa	n = 10
Ulceration: none	n = 10
Longer axis of resected specimen size (mm)	35.1 ± 10.2

Table 2 Details of propofol sedation and results of polysomnography analysis

	Value (mean ± SD)
Initial dose of propofol (mg/kg)	1.2 ± 0.4
Total dose of propofol (mg/kg)	9.8 ± 3.8
Sedation period (min)	113.8 ± 35.8
Total apnea hypopnea index (AHI) (/h)	10.4 ± 5.7
Mean duration of apnea hypopnea (s)	38.1 ± 48.9
Longest apnea and hypopnea (s)	159.1 ± 147.9
Patients with SaO2 < 70% event (s)	20%
Patients with SaO2 < 90% event (s)	50%
Cumulative time spent SaO2 less than 90%	3.7% ± 9.1%
Detection earlier than SaO2 less (s)	107.4 ± 67.0