Canadian Association of Gastroenterology Indicators of Safety Compromise following Colonoscopy in Clinical Practice

Table 2

Adverse events following colonoscopy.

Indicator	% ()	95% confidence interval	Rate
Medication-related
Need for cardiopulmonary resuscitation	0 (0)	0–0.1	0
Use of reversal agents	0.1 (4)	0.01–0.21	1 in 809
Hypoxia (saturation 85%)	9.9 (319)	8.9–10.9	1 in 10
Hypotension (<20% of baseline)	15.4 (498)	14.2–16.6	1 in 6.5
Hypertension (>20% of baseline)	0.9 (30)	0.57–1.2	1 in 108
Allergic reaction	0 (0)	0–0.1	0
Laryngospasm/bronchospasm	0 (0)	0–0.1	0
Procedure-related early
Perforation	0.2 (6)	0.05–0.35	1 in 539
Immediate postpolypectomy bleeding	0.3 (9)	0.11–0.49	1 in 359
Need for admission/transfer to emergency department from endoscopy unit	0.1 (4)	0.01–0.21	1 in 809
Instrument impaction	0 (0)	0–0.1	0
Abdominal pain requiring further evaluation	0.4 (12)	0.18–0.62	1 in 270
Procedure-related delayed
Death within 30 days	0.1 (4)	0.01–0.21	1 in 809
Unplanned hospitalization within 14 days	0.6 (19)	0.33–0.87	1 in 170
Unplanned healthcare visit within 14 days	1.8 (59)	1.3–2.3	1 in 55
Bleeding within 14 days	0.2 (6)	0.05–0.35	1 in 539
Infection	0.03 (1)	0.01–0.09	1 in 3235
Symptomatic metabolic complication	0.03 (1)	0.01–0.09	1 in 3235