A nurse is caring for a client who has been admitted with chronic obstructive pulmonary disease. Exhibits Select the 4 priority findings that require immediate follow-up.

A. Barrel chest Common chronic COPD finding, not acute or emergent. B. Shortness of breath Indicates respiratory compromise that is worsening-urgent. C. Arterial blood gas results Indicates respiratory acidosis; pCO₂ is severely elevated. D. Electrocardiogram results Needed to assess for cardiac complications due to hypoxia and acidosis. E. Oxygen saturation O₂ sat of 83% on room air is critically low and requires intervention. F. Lung sounds Wheezing is expected with COPD; less urgent than ABGs or O₂ sat.