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. 2025 Jun 10;68(3):E221–E234. doi: 10.1503/cjs.003423

Table 5.

Adverse events for colonoscopies

Colonoscopy adverse event Procedures with adverse events, %
Rural Referral Rural (comorbidity level 0) Referral (comorbidity level 0)
Any colonoscopy complication 0.5 1.2 0.4 0.6
 Sepsis 0.0 0.1 0.0 0.0
 Myocardial infarction 0.0 0.1 0.0 0.0
 Pulmonary embolism 0.1 0.1 0.0 0.0
 Cerebrovascular accident (stroke) 0.0 0.1 0.0 0.0
 Deep vein thrombosis 0.0 0.03 0.0 0.0
 Aspiration pneumonia 0.0 0.1 0.0 0.0
 Bowel injury 0.1 0.1 0.1 0.0
 Acute renal failure 0.1 0.4 0.1 0.1
 Heavy bleeding postprocedure 0.2 0.2 0.2 0.2
 Cut, puncture, perforation, or hemorrhage 0.1 0.1 0.1 0.1
 Wound disruption 0.0 0.0 0.0 0.0
 Surgical site infection 0.0 0.1 0.0 0.0
 Foreign body 0.0 0.0 0.0 0.0
 Problems with airways in postanesthesia recovery, excluding aspiration pneumonia 0.0 0.0 0.0 0.0
 Bladder injury 0.0 0.0 0.0 0.0
 Blood transfusion 0.0 0.0 0.0 0.0
 Cardiac pulmonary resuscitation 0.0 0.0 0.0 0.0