Scuba Diving International (SDI) Computer Nitrox Practice Exam

Monitoring Nitrox exposure continuously throughout the dive is essential for several reasons. First, keeping track of the partial pressure of oxygen (PPO2) is crucial to ensure it remains within safe limits. Excessive exposure to elevated PPO2 can lead to oxygen toxicity, which poses serious risks to divers, particularly at greater depths where PPO2 levels can increase significantly.

Continuous monitoring allows divers to make informed decisions about their depth, time underwater, and the overall safety of the dive. It helps in assessing the need for any adjustments based on factors like dive conditions, energy expenditure, and potential for unexpected events.

In addition, real-time data management ensures divers remain in optimal safety zones for both oxygen exposure and nitrogen absorption, enhancing both the enjoyment and safety of each dive experience. This practice supports prudent dive planning and execution, underscoring the importance of situational awareness throughout the dive.

Adhering to this practice promotes safer diving and mitigates risks associated with Nitrox usage.