Sunday, 3 May 2026

Adult BLS

 Here’s a clear, UK-focused walkthrough of adult Basic Life Support (BLS) based on guidance used by the NHS and the Resuscitation Council UK.


Adult BLS (UK NHS approach)

1.

Ensure safety

  • Check for danger to yourself, the casualty, and others
  • Only proceed if it’s safe


2.

Check responsiveness

  • Gently shake shoulders and shout:
    “Are you okay?”

If responsive:

  • Leave in position found (if safe)
  • Get help if needed
  • Reassess regularly

If unresponsive:

→ Move to next step immediately


3.

Shout for help

  • Call out for assistance nearby


4.

Open airway

  • Head tilt + chin lift:
    • One hand on forehead (tilt head back)
    • Two fingers under chin (lift)


5.

Check breathing (max 10 seconds)

Look, listen, feel:

  • Chest movement?
  • Breathing sounds?
  • Air on your cheek?

Important:

  • Agonal gasps = NOT normal breathing


6.

Call emergency services

If not breathing normally:

  • Call 999 or 112
  • Ask for ambulance
  • Put phone on speaker if alone


7.

Start CPR

Chest compressions:

  • Centre of chest (lower half of sternum)
  • Depth: 5–6 cm
  • Rate: 100–120/min
  • Allow full recoil

Ratio:

  • 30 compressions : 2 breaths


8.

Rescue breaths

  • Re-open airway (head tilt/chin lift)
  • Pinch nose, seal mouth
  • Blow steadily for ~1 second
  • Chest should rise

If unable/unwilling:

  • Do compression-only CPR


9.

Continue CPR

  • 30:2 cycle
  • Minimise interruptions
  • Switch rescuers every ~2 minutes if possible


10.

Use an AED (defibrillator) ASAP

  • Turn it on and follow instructions
  • Attach pads as shown
  • Ensure no one touches during shock

AEDs are commonly found in:

  • Public buildings
  • Train stations
  • Shopping centres


11.

Recovery position (if breathing returns)

If casualty starts breathing normally:

  • Place in recovery position
  • Monitor airway and breathing


When to stop CPR

  • Emergency services take over
  • Casualty shows clear signs of life
  • You become exhausted


Key NHS principles to remember

  • Early CPR + early defibrillation = best survival chance
  • Don’t delay compressions
  • Compression quality matters more than perfection


If you want, I can:

  •  Run you through a real exam-style OSCE scenario
  •  Give a quick memory checklist
  • Or  tailor this for healthcare vs layperson expectations

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