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Using a resuscitation mask correctly is crucial for effective ventilation during a rescue. The proper method involves sealing the mask to ensure no air escapes, which maximizes the effectiveness of the breaths administered. By sealing the mask, the lifeguard ensures that the air delivered through the one-way valve goes directly into the victim's lungs.
Next, opening the airway is essential. This is typically done by tilting the head back and lifting the chin, which helps clear the airway and prevents any obstructions from blocking airflow. Once the airway is opened, the lifeguard can blow into the one-way valve of the mask, which allows air to flow into the victim while preventing exhaled air from escaping back out.
This method ensures the highest possible efficiency of breaths delivered, which is critical for providing adequate oxygenation to a victim who is not breathing. Other methods mentioned, such as placing the mask loosely or not sealing it may fail to provide the necessary pressure and volume of air needed for effective ventilation, potentially compromising the effectiveness of the rescue effort.