Cardiopulmonary resuscitation in adults with cardiac arrest should be:
The core concept here is the proper technique for adult CPR. The main points include chest compression depth, rate, and the sequence of actions. The AHA guidelines emphasize high-quality CPR with specific parameters. The correct answer might involve the rate of compressions, which is typically 100-120 per minute, or the depth of 2-2.4 inches. Also, the sequence has changed from A-B-C to C-A-B: compressions first, then airway, then breathing.
Why the correct answer is right: The 2020 AHA guidelines recommend chest compressions at a rate of 100-120/min with a depth of 2-2.4 inches. This is because effective compressions help maintain circulation, delivering oxygen to vital organs. The C-A-B sequence is crucial as it prioritizes restoring circulation before addressing airway and breathing, which is more critical in adult cardiac arrests compared to pediatric cases.
Now, the incorrect options. If an option suggests a different compression rate, like 80-100, that's outdated. Another might mention a different depth, say 1 inch, which is too shallow. Also, if an option suggests the old A-B-C sequence, that's incorrect. Another wrong option could be about ventilation rate, like 12 breaths per minute without compressions, which isn't standard.
Clinical pearl: Remember the C-A-B sequence and the specific rates and depths. The "30 compressions to 2 breaths" ratio is for single rescuers. Also, minimizing interruptions in compressions is vital for effective CPR.
So, putting it all together, the correct answer is likely the one that states the correct rate, depth, and sequence. The other options would have outdated or incorrect parameters.
**Core Concept**
Cardiopulmonary resuscitation (CPR) in adults with cardiac arrest follows evidence-based guidelines emphasizing **high-quality chest compressions**, **correct rhythm recognition**, and **team coordination**. Key parameters include compression depth (2–2.5 inches), rate (100–120/min), and the **C-A-B sequence** (Compressions first, then Airway, then Breathing).
**Why the Correct Answer is Right**
The correct answer aligns with the **2020 AHA Guidelines**, which prioritize **immediate high-quality compressions** to maintain coronary and cerebral perfusion. For adults, compressions should be **100–120/min** with **full chest recoil** and **minimal interruptions**. Advanced airway management (e.g., endotracheal intubation) is recommended after initial compressions, not before. This approach optimizes survival by addressing the most common adult arrest etiology: **ventricular fibrillation**.
**Why Each Wrong Option is Incorrect**
**Option A:** Suggests 80–100 compressions/min, an outdated rate. The 2020 guidelines standardized 100–120/min for better perfusion.