Correct Answer: C

Rationale: The correct answer is C: 5th cranial nerve. Tic douloureux, also known as trigeminal neuralgia, is characterized by severe facial pain. The trigeminal nerve, the 5th cranial nerve, is responsible for sensory input from the face. This nerve is commonly affected in cases of tic douloureux, leading to sharp, shooting pain in the face. Choices A, B, and D are incorrect because the 1st cranial nerve (olfactory nerve), 7th cranial nerve (facial nerve), and 8th cranial nerve (vestibulocochlear nerve) are not typically associated with the symptoms of tic douloureux.

Correct Answer: C

Rationale: The correct answer is C: Performing a physical examination. This method allows the nurse to gather comprehensive data about the patient's health status, including vital signs, physical appearance, and potential health issues. It provides valuable information for developing an individualized care plan. Reviewing literature (A) is important but not for establishing a patient's database. Checking orders (B) and ordering medications (D) are part of the treatment process and do not directly contribute to establishing the initial patient database.

Correct Answer: B

Rationale: The correct answer is B because rifampin can cause discoloration of bodily fluids, including tears. If clients wear contact lenses, they need to be informed that the lenses may become colored due to this medication. This is important for the client's awareness and to prevent any potential harm to their eyes. A: Taking medication with meals is not necessary for rifampin administration. C: Avoiding wearing glasses is not relevant to rifampin treatment. D: Avoiding tuna, aged cheese, and red wine is not specifically related to rifampin use.

Correct Answer: C

Rationale: The correct answer is C: Urine output increases. This indicates digoxin's effectiveness as it improves cardiac output by enhancing contraction strength. Increased urine output signifies improved kidney perfusion due to enhanced cardiac function. Option A is incorrect as decreased urine output indicates poor kidney perfusion. Option B is incorrect as digoxin aims to regulate heart rate, not necessarily make it higher than 95. Option D is incorrect as a heart rate lower than 50 could indicate digoxin toxicity.

Correct Answer: B

Rationale: The correct answer is B: Potato. Potatoes are high in potassium, which is essential for various bodily functions. Potatoes can help increase potassium intake in patients who require it. Bread, eggs, and cereal are not as rich in potassium as potatoes. Increasing intake of these foods won't provide the necessary boost in potassium levels needed for the patient.