Correct Answer: C

Rationale: The correct answer is C, hypercapnia. In COPD, impaired lung function leads to inadequate oxygen exchange, causing increased carbon dioxide levels in the blood (hypercapnia). This can result in respiratory acidosis and further exacerbate respiratory distress. Monitoring for hypercapnia is crucial in COPD management to prevent respiratory failure. Incorrect choices: A: Pulmonary embolism - While patients with COPD are at increased risk for blood clots, pulmonary embolism is not a direct complication of COPD. B: Pneumothorax - Although individuals with COPD may develop pneumothorax due to weakened lung tissue, it is not a common complication. D: Asthma attack - Asthma and COPD are distinct conditions with different pathophysiology. Asthma attacks are not a typical complication of COPD.

Correct Answer: B

Rationale: The correct answer is B: Serum albumin levels. Serum albumin is a protein produced by the liver and is a key indicator of a patient's nutritional status. Low levels of serum albumin indicate malnutrition or protein deficiency. Monitoring serum albumin levels provides an objective measure of the patient's overall nutritional status. Choice A (Patient's weight) can be influenced by factors other than nutrition, such as fluid retention or muscle mass. Choice C (Patient's food preferences) does not provide direct information on the patient's actual nutritional intake. Choice D (Number of meals consumed per day) does not account for the quality or quantity of nutrients consumed in those meals.

Correct Answer: C

Rationale: The correct answer is C, hypercapnia. In COPD, impaired lung function leads to inadequate oxygen exchange, causing increased carbon dioxide levels in the blood (hypercapnia). This can result in respiratory acidosis and further exacerbate respiratory distress. Monitoring for hypercapnia is crucial in COPD management to prevent respiratory failure. Incorrect choices: A: Pulmonary embolism - While patients with COPD are at increased risk for blood clots, pulmonary embolism is not a direct complication of COPD. B: Pneumothorax - Although individuals with COPD may develop pneumothorax due to weakened lung tissue, it is not a common complication. D: Asthma attack - Asthma and COPD are distinct conditions with different pathophysiology. Asthma attacks are not a typical complication of COPD.

Correct Answer: D

Rationale: The correct answer is D: Worsening heart failure. Shortness of breath, fatigue, and leg swelling are common symptoms of heart failure. Monitoring for signs of worsening heart failure, such as increased dyspnea, weight gain, and decreased exercise tolerance, is crucial. Pulmonary embolism (A) presents with sudden chest pain and shortness of breath, not typically associated with chronic heart failure. Renal failure (B) may present with decreased urine output and electrolyte imbalances. Liver failure (C) may present with jaundice and changes in mental status. However, given the symptoms presented by the patient, monitoring for worsening heart failure is the most appropriate choice.

Correct Answer: D

Rationale: Rationale: 1. Current health promotion activities are important to assess the patient's preventive measures. 2. At 87 years old, focusing on current habits can help identify areas for improvement. 3. Obstetrical history is irrelevant as the patient is postmenopausal. 4. Childhood illnesses are less relevant compared to current health status. 5. General health for the past 20 years may not reflect current health behaviors.