What occurs during respiratory acidosis?

During respiratory acidosis, the primary issue is the accumulation of carbon dioxide (CO2) in the bloodstream. This condition arises when the lungs are unable to effectively excrete CO2, which can happen due to various respiratory disorders, including chronic obstructive pulmonary disease (COPD), severe asthma, or situations where ventilation is compromised.

As CO2 levels rise, it combines with water in the body to form carbonic acid, leading to a decrease in blood pH, making it more acidic. This is a hallmark of acidosis.

Understanding the relationship between CO2 levels and pH is crucial, as elevated CO2 results in increased acidity. Conversely, when there is an appropriate functioning of the respiratory system, the CO2 levels remain balanced, preventing acidosis.

Therefore, the primary indicator of respiratory acidosis is indeed elevated levels of CO2, making the choice stating that CO2 levels are too high the correct answer.