<prompt> Aerial blood gas analysis of a patient reveals - pH 7.2, HCO3 36 mmolL pCO2 70 mmHg. The abnormality isRespiratory acidosis with metabolic alkalosisRespiratory acidosisRespiratory alkalosis with metabolic acidosisRespiratory acidosis with metabolic acidosis  <response>: Answer- A. Respiratory acidosis with metabolic alkalosisIn this patientpH - DecreasedHCO3 - IncreasedPCO2 - IncreasedPCO2 is increased which indicates respiratory acidosisHCO3- is increased which indicates metabolic alkalosisThus this is a case of mixed disorder, where respiratory acidosis and metabolic alkalosis exist together. 