Usefulness of Acoustic Monitoring of Respiratory Rate in Patients Undergoing Endoscopic Submucosal Dissection

Table 1

A comparison of patients who developed respiratory suppression during endoscopic submucosal dissection [RS(+)] and those who did not [RS(−)].

Parameter	RS(−)	RS(+)	value
Gender (male/female)	86/27	42/27	0.03
Age (y, mean ± SD)	69.9 ± 7.6	71.3 ± 9.1	0.20
Height (cm, mean ± SD)	162.6 ± 7.6	159.2 ± 8.2	<0.01
Weight (kg, mean ± SD)	60.2 ± 9.4	56.4 ± 11.3	0.01
Past history ()
Heart	50/63	38/31	0.16
Lung	101/22	60/9	0.50
Liver	108/5	68/1	0.51
Cr (mg/dL)	1.04 ± 1.0	1.20 ± 1.6	0.60
RR before treatment; (mean ± SD)	17.5 ± 2.6	16.5 ± 2.5	0.01
BP < 90 mmHg ()	86/27	49/20	0.45
Dose of sedative (mg); (mean ± SD)	6.5 ± 4.5	6.2 ± 3.4	0.69
Procedure time (min)	105.5 ± 78.1	106.6 ± 50.0	0.15
ESD (esophagus/stomach)	15/98	9/60	0.86

RS: respiratory suppression, RR: respiratory rate, Cr: serum creatinine, and BP: blood pressure.