What are common signs of hyperventilation in divers?

The signs of hyperventilation in divers commonly include rapid, shallow breathing and lightheadedness. When a diver hyperventilates, they tend to breathe at an increased rate, which can lead to a reduced level of carbon dioxide in the blood. This reduction can cause symptoms such as lightheadedness, dizziness, and even euphoria in some cases. The rapid breathing pattern contributes to a state of respiratory alkalosis, which can trigger further physiological responses that are not beneficial for divers. Recognizing these signs is crucial for ensuring safety and making timely decisions to address the issue, such as encouraging the diver to slow their breathing and regain control of their respiratory rate. This understanding helps instructors and divers to manage the situation effectively, emphasizing the importance of proper breathing techniques during dives.