<prompt> A 40 years old male develops excessive hyperven-tilation. A G reveals pH- 7.5 pCO2 24 mm Hg PO2 88 mm of Hg. True statement is -Respiratory alkalosisMetabolic alkalosisRespiratory acidosisMetabolic acidosis  <response>: First stepDetermine whether it is acidosis or alkalosisIncreased pH indicates alkalosisSecond stepInspect HCO3-CO2 to determine the cause of alkalosis or acidosis.pCO2 24 mm Hg decreasedThe alteration in CO2 is in sync. with the alteration in the pH, so the alkalosis can be attributed to a decrease in pCO2.Thus, it is a case of respiratory alkalosis. 