Correct Answer: B

Rationale: Encouraging the patient to express their thoughts is the best response in this situation. It allows the patient to voice their concerns or reasons for canceling the surgery, which can help the healthcare team address any misunderstandings or fears the patient may have. Choices A and D are too directive and do not consider the patient's autonomy and right to make informed decisions about their care. Choice C is inappropriate as it disregards the patient's expressed decision and fails to address the underlying issue.

Correct Answer: A

Rationale: The correct answer is A: Gastrointestinal upset. Metformin can cause gastrointestinal upset, especially when first starting therapy. It is important to take it with food to reduce these effects. Increased appetite (choice B) and weight loss (choice C) are not common side effects of metformin but may occur due to improved blood sugar control. Frequent urination (choice D) is a symptom of uncontrolled diabetes and not a side effect of metformin.

Correct Answer: A

Rationale: In this scenario, the nurse should respond by indicating that the patient needs to provide permission to share their medical records with the family member. Patient confidentiality is a fundamental principle in healthcare, and sharing medical records without the patient's consent is a violation of privacy. Choice B is incorrect because the provider's approval alone is not sufficient to share medical records, as patient consent is crucial. Choice C is incorrect because viewing the patient's chart without the patient's consent is not appropriate. Choice D is incorrect as filling out a request form does not address the issue of patient consent, which is essential for sharing medical information.

Correct Answer: A

Rationale: Corrected Rationale: Nitroglycerin is known to cause hypotension due to its vasodilating effect, which can lead to low blood pressure. Therefore, the nurse should closely monitor the client for signs of hypotension such as dizziness, light-headedness, or weakness. Tachycardia (increased heart rate), bradycardia (decreased heart rate), and hyperglycemia (high blood sugar) are not typically associated with nitroglycerin use and are less likely to be side effects that the nurse needs to monitor for in this scenario.

Correct Answer: B

Rationale: Correct Answer: Dilute the medication. Potassium chloride should always be diluted before administration to avoid irritation and complications. Choice A is incorrect because administering it as a bolus can lead to adverse effects. Choice C is incorrect as giving it rapidly can be dangerous. Choice D is incorrect as monitoring the respiratory rate is not directly related to administering potassium chloride.