A patient with a history of chronic obstructive pulmonary di…

A patient with a history of chronic obstructive pulmonary disease (COPD) comes to the emergency department experiencing lethargy, restlessness, blurred vision, decreased respirations, and tremors. Given the arterial blood gas shows pH 7.30, PaCO2 50 mmHg (normal 35-45 mmHg), what would you expect the bicarbonate levels to be?