Final answer:
The increased HCO3- concentration in blood from the stomach during HCl production indicates metabolic alkalosis, where blood pH is too high due to excess bicarbonate.
Step-by-step explanation:
The increased concentration of HCO3- in blood draining from the stomach during the production of HCl is called metabolic alkalosis. This condition occurs when the blood becomes too alkaline (pH above 7.45) due to a primary excess of bicarbonate. It can be caused by various factors such as loss of hydrochloric acid from the stomach through vomiting, the use of diuretics, or excessive ingestion of substances like bicarbonate or antacids.
Metabolic compensation for respiratory diseases involves the conservation of bicarbonate ions. However, the respiratory system is less adept at compensating for metabolic alkalosis compared to metabolic acidosis, as the body can only tolerate a limited decrease in respiration.