What is necessary when giving rescue breaths to an adult?

When administering rescue breaths to an adult, it is essential to have an open airway. This is because the effectiveness of rescue breaths is contingent on air being able to flow unobstructedly into the lungs. An open airway allows the rescuer to deliver breaths directly into the lungs, ensuring that the oxygen reaches the bloodstream and is available for the body’s vital organs.

To achieve an open airway, the rescuer typically utilizes a head-tilt, chin-lift maneuver or the jaw-thrust maneuver, especially in situations where spinal injuries may be a concern. Without an open airway, even if breaths are given, they may not reach the lungs effectively, compromising the potential for resuscitation.

The other options do not directly address the critical requirement of having an open airway. While factors like airway closure, various types of ventilation, and CPR assistance may be relevant in broader contexts of emergency response and resuscitation, the specific action of giving rescue breaths necessitates that the airway is clear and accessible.