What should divers monitor closely to prevent complications while deep diving?

Monitoring the breathing gas supply is crucial for divers, especially during deep dives. As divers go deeper, the demands on their gas supply increase due to higher pressure, which can affect their consumption rate. Ensuring that there is an adequate amount of gas is essential for safe ascent and reducing the risk of hypoxia, where the body does not receive enough oxygen. Additionally, divers need to be mindful of the type of gas they are using, including the potential for nitrogen narcosis and oxygen toxicity, depending on the depth and gas mixtures. This makes close monitoring of the breathing gas supply an essential practice for avoiding potentially life-threatening complications during deep dives.