Correct Answer: A

Rationale: Allergy is the correct answer as it is a non-infectious cause of diarrheal diseases. While bacterial, parasitic, and viral infections can lead to diarrhea by affecting the gastrointestinal tract, allergies are immune system reactions triggered by specific substances and are not caused by infectious agents. Bacterial, parasitic, and viral infections are known to cause infectious diarrhea, making choices B, C, and D incorrect.

Correct Answer: A

Rationale: The correct intervention for perineal pain in a postpartum client is the use of ice packs for the first 24 hours. Ice packs help reduce swelling and discomfort in the perineal area, especially during the initial post-delivery period. Applying heat packs can exacerbate swelling and discomfort. Avoiding peri-bottles may lead to poor perineal hygiene. Using tampons is contraindicated postpartum as it increases the risk of infection.

Correct Answer: A

Rationale: The correct answer is A: Water. Water is the ideal fluid to reconstitute oral rehydration salts because it helps in proper hydration without adding unnecessary sugars or acidity that may be present in fruit juice or soda. Using water ensures the salts are properly dissolved and can effectively rehydrate the individual. Choices B and C are incorrect because fruit juice and soda may contain sugars or acidity that can interfere with the rehydration process and are not recommended for reconstituting oral rehydration salts.

Correct Answer: C

Rationale: Warfarin is a medication commonly used as a blood thinner to prevent blood clot formation. It works by inhibiting the clotting factors in the blood, thereby reducing the risk of clot formation and helping in the management of conditions like congestive heart failure and arrhythmias. Choices A, B, and D are antibiotics and do not have blood-thinning properties like Warfarin.

Correct Answer: C

Rationale: Inability to lie supine is a characteristic sign of lower respiratory infection. This positioning preference is often seen in patients with lower respiratory infections due to discomfort or difficulty breathing when lying flat on their back. While cough and fever are common symptoms associated with respiratory infections, they are not specific to lower respiratory infections. Inability to eat may indicate general illness or discomfort but is not a specific indicator of lower respiratory infection.