Acid-base imbalances - compensation of respiratory acidosis and alkalosis

• When one pH balancing system is affected then the other balancing system attempts to correct, or compensate for, the pH imbalance. - Respiratory acidosis: • Excessive CO2 is present so blood pH becomes acidic. • Compensation is increased secretion of H+ into urine and reabsorption of bicarbonate ions into the blood. • Blood pH returns to normal, - Respiratory alkalosis: • Little CO2 is present so blood pH becomes alkaline. • Compensation is increased reabsorption of H+ into the blood and secretion of bicarbonate ions into urine. • Blood pH returns to normal.

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