What is a primary reason divers need to be cautious about repetitive diving with enriched air?

Get ready for the SSI Specialty Course Enriched Air Nitrox (SC-EAN) 40% Level 2 Test. Review key concepts with flashcards and multiple choice questions, complete with hints and detailed explanations. Prepare for success!

Divers need to be cautious about repetitive diving with enriched air primarily due to the risk of cumulative oxygen exposure. When diving with enriched air, which has a higher percentage of oxygen than normal air, divers must be aware that each dive adds to their overall exposure to oxygen. High partial pressures of oxygen can lead to oxygen toxicity, particularly when divers exceed certain depth limits or extend their time underwater beyond safe limits. This condition poses serious health risks, including potential central nervous system issues.

While some of the other choices are related to common diving considerations, they do not specifically address the unique concerns associated with using enriched air. For example, buoyancy is primarily influenced by the interplay of the diver's overall gear and body composition with the surrounding water, and while nitrogen narcosis is a valid concern with other gas mixtures or depths, it is less relevant when discussing the implications of using enriched air for repetitive dives.

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