Basic Life Support (BLS) encompasses crucial emergency interventions for respiratory arrest, cardiac arrest, and airway obstruction, emphasizing the importance of early CPR to enhance survival without neurological injury. The document outlines the steps and components of BLS, including the Chain of Survival, the use of defibrillators, and techniques for performing high-quality CPR. Key procedures involve assessing the victim, initiating CPR, using an AED, and ensuring consistent monitoring during the emergency response.