1.0 Introduction: What Does It Mean to “Choke” or “Suffocate”?

Asphyxiation is a dangerous condition where the respiratory tract is blocked, preventing the body from getting the oxygen it needs and endangering vital functions. While we often think of this as choking on food, the term is a broad one that covers a variety of life-threatening situations, from incidents in water to exposure to invisible gases, all of which can lead to irreversible damage within minutes if not addressed immediately.

This guide is designed to clarify the essential vocabulary and concepts for a student new to health and safety, breaking down the different causes and effects of oxygen deprivation. Before we explore the different types of choking, it’s crucial to understand what happens inside the body when oxygen is cut off and how to spot the most critical warning sign.