What refers to carbon dioxide toxicity?

Hypercapnia is the correct term that refers to carbon dioxide toxicity. It occurs when there is an excess of carbon dioxide (CO2) in the bloodstream, which can lead to an increase in acidity (acidosis) in the body. This condition can impair respiratory function and lead to symptoms such as headaches, dizziness, confusion, and in severe cases, loss of consciousness or even death.

In diving contexts, hypercapnia can result from inadequate ventilation or excessive CO2 production, often exacerbated by breathing compressed gas at depth. Understanding hypercapnia is crucial for divers because it highlights the importance of proper gas management and ventilation to avoid toxic effects while submerged. Recognizing its potential signs and symptoms is essential for ensuring diver safety, as any missed indicators could lead to serious health complications.

Barotrauma relates to injuries caused by pressure changes, nitrogen narcosis refers to the narcotic-like effects of nitrogen at high pressures, and hypothermia is a condition resulting from excessive exposure to cold, which does not pertain to carbon dioxide toxicity.