Correct Answer: D

Rationale: Claudication is a symptom of peripheral vascular disease where there is an inadequate supply of oxygen to the muscles due to reduced blood flow. This mismatch between oxygen demand and supply leads to tissue hypoxia, resulting in cramping, weakness, and discomfort. Option D correctly states that claudication is characterized by cramping and weakness, making it the correct answer. Options A, B, and C are incorrect. Claudication occurs when oxygen demand exceeds supply, not the other way around as stated in Option A. Pain in claudication typically occurs with activity, not at rest as mentioned in Option B. While tissue hypoxia is a consequence of claudication, it is not the primary cause, making Option C incorrect.

Correct Answer: A

Rationale: The correct answer is 'Oxygen saturation is 88%.' Following a thoracentesis, oxygen saturation should improve. A saturation of 88% suggests a potential complication like pneumothorax. While the other assessment findings are important, the priority is to address the low oxygen saturation to prevent further complications. High blood pressure and respiratory rate may also need attention, but the immediate concern is the oxygen saturation level. Pain level, though significant for the patient's comfort, takes lower priority compared to the potential life-threatening issue of hypoxia.

Correct Answer: A

Rationale: The correct answer is 'Respirations are 36 breaths/minute.' An increased respiratory rate is a crucial sign of respiratory distress in patients with COPD, necessitating immediate interventions like oxygen therapy or medications. The other options are common chronic changes seen in COPD patients. Option B, the 'Anterior-posterior chest ratio is 1:1,' is related to the barrel chest commonly seen in COPD due to hyperinflation. Option C, 'Lung expansion is decreased bilaterally,' is expected in COPD due to air trapping. Option D, 'Hyperresonance to percussion is present,' is typical in COPD patients with increased lung volume and air trapping.

Correct Answer: B

Rationale: Kussmaul respirations (deep and rapid) are a compensatory mechanism for metabolic acidosis. The low pH and low bicarbonate levels indicate metabolic acidosis. Intercostal retractions, low oxygen saturation, and decreased venous O2 pressure are not associated with acidosis. Intercostal retractions typically occur in respiratory distress, while low oxygen saturation and decreased venous O2 pressure are more related to respiratory or circulatory issues, not metabolic acidosis.

Correct Answer: D

Rationale: Claudication is a symptom of peripheral vascular disease where there is an inadequate supply of oxygen to the muscles due to reduced blood flow. This mismatch between oxygen demand and supply leads to tissue hypoxia, resulting in cramping, weakness, and discomfort. Option D correctly states that claudication is characterized by cramping and weakness, making it the correct answer. Options A, B, and C are incorrect. Claudication occurs when oxygen demand exceeds supply, not the other way around as stated in Option A. Pain in claudication typically occurs with activity, not at rest as mentioned in Option B. While tissue hypoxia is a consequence of claudication, it is not the primary cause, making Option C incorrect.