Correct Answer: C

Rationale: The correct formula to calculate the appropriate morphine dose for the client is 5 mg/kg of body weight. This is the most suitable formula because morphine dosing is typically based on weight to ensure appropriate pain management and to prevent adverse effects. By using this formula, the nurse can calculate the exact dose based on the client's weight, providing personalized care. Choice A (1 mg/kg of body weight) is too low of a dose and may not effectively manage severe pain. Choice B (5 mg/70kg of body weight) is not ideal as it does not account for variations in weight among individuals. Choice D (10mg/70kg of body weight) would result in an overdose for most patients, potentially causing serious harm. Therefore, by using the formula of 5 mg/kg of body weight, the nurse can ensure that the morphine dose is appropriate and safe for the client.

Correct Answer: D

Rationale: The correct answer is D: Involve the son in the plan of care as much as possible. This is important for several reasons. Firstly, involving the son promotes family-centered care, which can improve patient outcomes. Secondly, the son may provide valuable insights into the patient's preferences and needs. Thirdly, it can help reduce the patient's confusion by providing familiar support. Option A is incorrect as it disregards the potential benefits of involving family members. Option B is incorrect as it focuses on the patient's rest without considering the emotional support the son may provide. Option C is incorrect as it assumes the gender of the family member matters more than their relationship to the patient.

Correct Answer: B

Rationale: The correct answer is B because it encourages the patient to reflect on the potential causes of their fatigue, leading to a more detailed and insightful response. This open-ended question allows the patient to explore various factors contributing to their fatigue, such as lifestyle habits, medical conditions, or emotional stressors. Choice A focuses on stress, which may not be the primary cause of fatigue for the patient. Choice C is too specific and may not uncover other relevant information. Choice D assumes that sleep duration is the sole factor contributing to fatigue, neglecting other possible causes. Overall, choice B facilitates a more comprehensive discussion and helps the nurse gather valuable information to address the patient's concerns effectively.

Correct Answer: B

Rationale: The correct answer is B because it encourages the patient to reflect on their own thoughts and identify potential causes of their fatigue. It allows the patient to express their own insights and helps the nurse understand the underlying reasons for the fatigue. Choice A focuses on stress, which may not be the main cause of fatigue. Choice C is irrelevant to exploring the fatigue further. Choice D assumes that lack of sleep is the main issue, which may not be the case for the patient.

Correct Answer: D

Rationale: The correct answer is D: Heart. A potassium level of 6.3 mEq/L indicates hyperkalemia, which can lead to cardiac arrhythmias and even cardiac arrest. The heart is highly sensitive to potassium levels, as it plays a crucial role in regulating the heart's electrical activity. Elevated potassium levels can disrupt this balance, leading to serious cardiac complications. Summary: A: Lungs - Not directly affected by potassium levels. B: Liver - Not directly affected by potassium levels. C: Kidneys - Kidneys regulate potassium levels but are not the most at risk for dysfunction in this scenario.