This topic covers basic life support (BLS) and the use of an external defibrillator (AED). It includes understanding BLS principles, performing CPR, using
Topic Synopsis
This topic covers basic life support (BLS) and the use of an external defibrillator (AED). It includes understanding BLS principles, performing CPR, using a defibrillator, and managing special circumstances.
Key Concepts & Core Principles
- Clinical decision-making: Using systematic approaches like the ABCDE (Airway, Breathing, Circulation, Disability, Exposure) assessment to prioritise care and determine the urgency of transport.
- Patient assessment: Conducting a thorough history and physical examination, including vital signs (e.g., blood pressure, pulse oximetry), to identify red flags and formulate a management plan.
- Urgent care pathways: Knowing when to treat and discharge at scene, refer to primary care, or transport to an appropriate facility (e.g., minor injury unit or emergency department).
- Safe manual handling and equipment use: Applying moving and handling techniques to prevent injury, and using stretchers, spinal boards, and defibrillators correctly.
- Communication and teamwork: Using the SBAR (Situation, Background, Assessment, Recommendation) tool to handover patients to hospital staff and collaborating with other emergency services.
Exam Tips & Revision Strategies
- Practise the sequence: DRSABCD.
- Emphasise early defibrillation.
- Know the compression-to-ventilation ratio.
- When demonstrating BLS, verbalise each step clearly, especially the initial safety check and calling for help, as these are often assessed within the sequence.
- Practice using an AED trainer regularly to become familiar with the voice prompts; rehearse the 'stand clear' command emphatically.
- For the written or oral component, revise the Resuscitation Council's algorithms for adult, child, and infant BLS, noting key differences.
- In scenario-based assessments, keep calm and methodical; if you make a mistake, state the correct action immediately – assessors look for corrective behaviour.
- Understand the legal and ethical aspects, such as consent and DNACPR, which may be explored in questioning.
Common Misconceptions & Mistakes to Avoid
- Incorrect hand placement during chest compressions.
- Delaying defibrillation.
- Not checking for safety before approaching.
- Failing to open the airway adequately before checking for breathing, leading to failure to recognise cardiac arrest.
- Placing the AED pads over a pacemaker or medication patches.
- Performing chest compressions on a soft surface, reducing effectiveness.
Examiner Marking Points
- Describe the chain of survival.
- Demonstrate correct CPR technique.
- Explain how to use an AED safely.
- Identify special circumstances (e.g., drowning, pregnancy).
- Award credit for demonstrating the correct sequence of actions when approaching an unresponsive casualty: checking for danger, response, shouting for help, opening the airway, and checking for breathing for no more than 10 seconds.
- Credit should be given for performing chest compressions at a rate of 100–120 per minute, with a depth of 5–6 cm, allowing full chest recoil, and minimising interruptions.
- When using an AED, the learner must correctly place the pads on the casualty's bare chest, follow the voice prompts, and ensure everyone stands clear during analysis and shock delivery.
- For resuscitation adjuncts, award credit for demonstrating effective ventilation using a pocket mask or bag-valve mask with correct head-tilt and chin-lift, achieving visible chest rise.