The most common acid-base disturbance occurs because of impaired elimination of co₂ by the system. respiratory acidosis is defined as occurring when the partial pressure of in the arterial blood becomes elevated above mm hg.

The most common acid-base disturbance occurs because of impaired elimination of CO₂ by the respiratory system. Respiratory acidosis is defined as occurring when the partial pressure of carbon dioxide in the arterial blood becomes elevated above 45 mm Hg.

Explanation:

It can be caused by injury to the respiratory center, disorders of the nerves or muscles involved with breathing, airway obstruction, or decreased gas exchange at the respiratory membrane.

Continued impairment can eventually cause an increase in blood carbonic acid and a subsequent increase in H⁺ concentration.