Emergency care

Immediate high-quality CPR and early defibrillation are the highest priorities for a pulseless patient to maintain systemic perfusion and restore a perfusing cardiac rhythm. Delaying these actions for secondary interventions like establishing IV access or auscultating the chest significantly reduces the patient's chance of survival.

Emergency treatment of a tension pneumothorax requires immediate needle decompression to evacuate trapped pleural air and restore hemodynamic stability. Medical therapies like bronchodilators or steroids are ineffective because they do not address the mechanical collapse of the lung and mediastinal shift.

Immediate high-quality CPR and early defibrillation are the highest priorities for a pulseless patient to maintain systemic perfusion and restore a perfusing cardiac rhythm. A diagram for this topic isn't available yet — the worked example below walks the same reasoning step by step.

• !Targeting a higher saturation like 100% is incorrect because excessive oxygen can suppress the hypoxic respiratory drive and worsen ventilation-perfusion mismatch.
• !Medical therapies like bronchodilators or steroids are ineffective because they do not address the mechanical collapse of the lung and mediastinal shift.

Answer each from memory — you'll see instantly whether you're right and why.

Run a focused 10-question mini-mock on Emergency care and see it stick.