The nurse is caring for a client with a new diagnosis of epilepsy who is prescribed phenytoin. Which teaching point should the nurse emphasize?

Choice A reason: Frequent small meals reduce gastroesophageal reflux by minimizing gastric distension, which decreases pressure on the lower esophageal sphincter. This prevents acid reflux into the esophagus, alleviating heartburn and irritation, making it an effective dietary strategy for managing GERD symptoms.

Choice B reason: Switching to decaffeinated coffee and tea may reduce reflux triggers, as caffeine relaxes the lower esophageal sphincter. However, small meals are more effective, as they directly reduce gastric volume and sphincter pressure, providing broader symptom relief than caffeine avoidance alone.

Choice C reason: Avoiding milk and cream is relevant for some GERD patients, as high-fat foods delay gastric emptying, increasing reflux. However, frequent small meals address the root cause of reflux by reducing gastric pressure, making this a more universally effective strategy than specific food avoidance.

Choice D reason: Listing high-dairy snack foods reinforces avoidance but is less direct than recommending small meals. Dairy may trigger reflux in some, but frequent small meals broadly reduce gastric distension and sphincter pressure, offering a more immediate and effective GERD management strategy.

Choice A reason: Hemoccult tests detect blood in sputum, indicating hemoptysis, a TB symptom, but do not confirm Mycobacterium tuberculosis infection. Sputum culture is required for definitive diagnosis, as hemoccult only identifies bleeding, which is nonspecific and can occur in other respiratory conditions.

Choice B reason: Chest x-ray or CT scans show pulmonary abnormalities like cavitary lesions in TB but are not confirmatory. Radiographic findings suggest TB but require microbiological confirmation via sputum culture, as similar patterns occur in other lung diseases, making imaging supportive but not diagnostic.

Choice C reason: Sputum culture positive for Mycobacterium tuberculosis is the gold standard for TB diagnosis. It directly identifies the pathogen, confirming active infection. Other tests like skin tests or imaging are suggestive but not definitive, as they cannot distinguish active TB from latent or other conditions.

Choice D reason: A positive PPD skin test indicates TB exposure or latent infection but does not confirm active disease. False positives occur with prior BCG vaccination or nontuberculous mycobacteria. Sputum culture is needed to verify active TB, making the skin test less definitive.