This document provides guidelines from a surgical registrar on when and how to contact them regarding surgical emergencies that present to the emergency department. It outlines some key situations that should prompt a call, such as a hole or blockage in something, something in the wrong place, or significant infection or inflammation. It also provides advice on what information to provide when calling, including who you are, where you're calling from, and what you need from the registrar. The document gives some brief overviews of specific conditions like hernias, pancreatitis, ischemic gut and limb, and massive GI bleeds.