Correct Answer: C

Rationale: Checking the client's gag reflex before eating or drinking is the highest priority for a client at risk for aspiration pneumonia. Aspiration pneumonia can occur when food, liquids, or saliva are inhaled into the lungs, leading to inflammation or infection. Checking the gag reflex helps prevent the aspiration of substances into the lungs. Assessing the client's level of consciousness (Choice A) is important but not as immediately critical as checking the gag reflex. Monitoring oxygen saturation (Choice B) is essential for respiratory assessment but does not directly prevent aspiration. Monitoring intake and output (Choice D) is important for overall client management but does not specifically address the risk of aspiration pneumonia.

Correct Answer: C

Rationale: Dyspnea indicates a potential complication such as pneumothorax or incorrect catheter placement, requiring immediate attention. Pallor may indicate anemia but is not as urgent as dyspnea in this context. Increased temperature could be a sign of infection but is not as critical as respiratory distress. Involuntary muscle spasms are not directly related to central venous catheter placement and are of lower priority compared to respiratory issues.

Correct Answer: D

Rationale: Skim milk is a reliable source of Vitamin B12, which is essential for the health of both the mother and the developing fetus. While figs, broccoli, and stewed tomatoes are nutritious foods, they are not significant sources of Vitamin B12. Figs are a good source of fiber and other vitamins, broccoli is rich in Vitamin C and K, and stewed tomatoes are high in Vitamin C and antioxidants, but they do not contain Vitamin B12 as much as skim milk does.

Correct Answer: D

Rationale: The correct answer is to instruct the client to increase protein intake. This is appropriate because increasing protein intake can help maintain muscle mass and strength in clients with COPD. Option A, 'Drink carbonated beverages,' is incorrect as carbonated beverages can exacerbate COPD symptoms. Option B, 'Decrease fiber intake,' is also incorrect as fiber is important for digestion and should not be decreased unless specifically advised by a healthcare provider. Option C, 'Use bronchodilators after meals,' is incorrect because bronchodilators are typically used before meals to help open the airways for better breathing, not after meals.

Correct Answer: A

Rationale: The correct answer is A because wearing a mask in public can help prevent the spread of TB to others. Choice B is incorrect as taking medication as prescribed helps in treating the infection within the individual but does not directly prevent spreading it to others. Choice C is important for respiratory hygiene but may not be sufficient to prevent transmission. Choice D, isolation until treatment is complete, is crucial for preventing the spread but is not specifically about understanding transmission.