What is a primary concern regarding oxygen toxicity for scuba divers?

The primary concern regarding oxygen toxicity for scuba divers is the risk of pulmonary symptoms. When divers breathe gas mixtures that have a higher concentration of oxygen than what is present in normal air, they can be exposed to pressures that elevate the potential for oxygen toxicity. This condition primarily affects the lungs, leading to symptoms such as coughing, chest pain, and even difficulty breathing.

Increased partial pressure of oxygen can cause oxidative stress in lung tissues, which is why monitoring exposure to oxygen and understanding the limits for safe diving are crucial for divers using mixtures like enriched air nitrox. Symptoms arise because high concentrations of oxygen can damage lung tissue, leading to potential pulmonary complications, making it a significant concern compared to other issues related to oxygen toxicity.

Other concerns such as neurological complications and muscle fatigue exist but are considered less immediate when discussing the direct consequences of highoxygen levels. Understanding the impact on the lungs is essential for safe diving practices and managing the risks associated with enriched air nitrox.