Resuscitation Council UK (RCUK) Advanced Life Support (ALS) 2025 – 400 Free Practice Questions to Pass the Exam

In managing anaphylactic episodes, high flow oxygen is preferred primarily due to the urgent need to rapidly improve oxygenation. Anaphylaxis can lead to severe bronchospasm, airway obstruction, and significant cardiovascular compromise, all of which can impair the patient’s ability to oxygenate adequately. High flow oxygen provides a large volume of oxygen and can quickly alleviate hypoxia by ensuring that sufficient oxygen reaches the bloodstream to support vital organ function.

In this acute emergency, the goal is to address potential hypoxemia quickly and effectively. High flow oxygen can also help mitigate the effects of the patient's inability to breathe normally due to airway swelling or constriction. Moreover, high flow devices are often used in conjunction with other critical interventions, such as the administration of epinephrine and fluid resuscitation, making it essential to optimize oxygen delivery in this context. This comprehensive approach helps stabilize the patient's condition while other life-saving treatments are implemented.

While other methods of oxygen delivery have their uses, they do not provide the rapid and significant increase in oxygenation required during anaphylactic episodes, where every second counts in preserving vital functions.