This is a two part video series. This part of the video covers the topics of intestinal obstruction, its classification, dynamic and adynamic obstruction, pathophysiology behind the occurrence of obstruction, what closed-loop obstruction is, associated clinical features, differences between proximal and distal bowel obstruction, features of large bowel obstruction, what happens when strangulation occurs, diagnostic investigations and treatment approaches. Timeline: 0:00 – Introduction 0:18 – Classification 0:59 – Dynamic obstruction 1:36 – Adynamic obstruction 2:39 – Pathophysiology of obstruction 3:41 – Closed loop obstruction 5:14 – Clinical features 5:41 – Proximal vs distal small bowel obstruction 6:11 – Large bowel obstruction 6:38 – Strangulation 7:00 – Diagnosis 10:27 – Treatment