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.

Correct Answer: B

Rationale: The correct answer is B: To provide a means for further comparison and evaluation. By recording the color of drainage from each tube and catheter, the nurse can monitor changes over time, assess for any abnormalities, and evaluate the effectiveness of treatment. This helps in detecting complications early and making informed decisions. Rationale for other choices: A: To restore and maintain intravascular volume - Monitoring drainage color does not directly relate to intravascular volume status. C: To avoid interference with wound drainage - Monitoring drainage color does not prevent interference with wound drainage. D: To prevent pain related to obstruction - Monitoring drainage color does not directly prevent pain related to obstruction.

Correct Answer: D

Rationale: The correct answer is D because an MRI is a noninvasive imaging test that uses magnetic energy to produce detailed images of internal body parts. This explanation is accurate and informative, reassuring the patient. A is incorrect because it describes electromyography (EMG), not MRI. B is incorrect as it describes electroencephalography (EEG), not MRI. C is incorrect because it describes a nuclear medicine test, not MRI. In summary, only option D provides a correct and relevant description of what to expect during an MRI.

Correct Answer: D

Rationale: Correct Answer: D Rationale: 1. Applying antibiotic ointment and placing the mother in reverse isolation are not appropriate for managing vesicles suspected to be herpes simplex virus (HSV) during labor. 2. HSV can be transmitted to the baby during vaginal delivery, leading to serious consequences. 3. Standard precautions should always be maintained to prevent the spread of infections. 4. Preparing for the possibility of a cesarean section and notifying the obstetrician about the vesicles are important steps to protect the baby and staff from potential harm.

Correct Answer: C

Rationale: Rationale: C: Monitoring body temperature is essential for early detection of infection or fever, which can indicate disease exacerbation in SLE clients. A: Exposure to sunlight can worsen SLE symptoms due to photosensitivity. B: Activity limitations are crucial to prevent flare-ups and reduce disease progression in SLE. D: Corticosteroids should not be stopped abruptly without healthcare provider guidance to prevent symptom recurrence and adrenal insufficiency.