Correct Answer: B

Rationale: A low platelet count, as seen in choice B, is concerning as it could indicate heparin-induced thrombocytopenia, a serious side effect of heparin therapy. Heparin-induced thrombocytopenia can lead to an increased risk of blood clotting, potentially causing severe complications. Monitoring platelet counts is crucial during heparin therapy to promptly identify and manage this adverse effect.

Correct Answer: A

Rationale: The correct answer is A. Effective oxygen therapy should improve the client's ability to perform activities without dyspnea. This indicates that the oxygen therapy is adequately supporting the client's respiratory needs. An oxygen saturation of 92% may suggest the need for a higher flow rate to improve oxygenation. A respiratory rate of 24 breaths per minute is elevated, indicating potential respiratory distress. A productive cough does not necessarily indicate effective oxygen therapy, as it is a symptom of respiratory irritation or infection, not oxygenation status.

Correct Answer: A

Rationale: In chronic obstructive pulmonary disease (COPD), clients often develop a barrel chest, characterized by an increased anterior-posterior diameter of the chest due to hyperinflation of the lungs. This change in chest shape is a common finding in COPD. Decreased respiratory rate, weight gain, and productive cough with yellow sputum are not typical findings associated with COPD.

Correct Answer: C

Rationale: The correct answer is C. While exercise is important for clients with COPD, daily exercise may be too strenuous. Clients should be encouraged to exercise regularly but should be advised to avoid overexertion. Statements A, B, and D demonstrate appropriate understanding and management of COPD symptoms.

Correct Answer: C

Rationale: In clients with severe COPD, shortness of breath can significantly impact their ability to perform basic activities like bathing and eating. Therefore, the nurse's priority should be to assess if shortness of breath is interfering with the client's basic activities, which can provide crucial information for planning and managing care.