After examining and treating a client who has been raped, discharge instructions from the emergency department (ED) would include which of the following?

Choice A reason:
Magnesium sulfate is used in the management of severe preeclampsia primarily for seizure prophylaxis. One of the key side effects of magnesium sulfate is its impact on neuromuscular transmission, leading to diminished deep-tendon reflexes as serum magnesium levels rise. The therapeutic range for anticonvulsant prophylaxis is typically between 5-8 mg/dL. Reflexes may begin to diminish when serum levels reach 8-12 mg/dL, indicating potential magnesium toxicity. Therefore, diminished reflexes are a warning sign to reassess the infusion rate and possibly reduce or discontinue the medication.

Choice B reason:
A respiratory rate of 16 breaths per minute falls within the normal adult range and suggests that the client's respiratory system is not being adversely affected by the magnesium sulfate infusion. Respiratory rate is a critical parameter to monitor during magnesium sulfate therapy, as respiratory depression is a serious side effect of magnesium toxicity. Maintaining a normal respiratory rate indicates that it is safe to continue the infusion at the current rate.

Choice C reason:
While a urine output of 50 mL/hr is on the lower end of the normal range, it is still considered adequate for most adults. In the setting of magnesium sulfate therapy for severe preeclampsia, maintaining adequate urine output is essential for ensuring that the kidneys can excrete the magnesium to prevent accumulation and toxicity. If urine output decreases significantly, it may necessitate reevaluation of the infusion rate or additional interventions to support renal function.

Choice D reason:
A heart rate of 56 beats per minute is slightly bradycardic but may not be clinically significant if the client is asymptomatic. However, magnesium has a direct effect on cardiac function, and high levels can lead to bradycardia and other cardiac conduction abnormalities. It is important to monitor the client's heart rate and rhythm during magnesium sulfate therapy to detect any early signs of cardiac involvement due to magnesium toxicity.

Choice A Reason
While maintaining a stable blood pressure is important for a client with hypertension, furosemide is primarily a diuretic, and its therapeutic effect is to reduce fluid overload, not directly to stabilize blood pressure. Therefore, this finding alone does not best indicate the therapeutic effect of furosemide.

Choice B Reason
Clear lungs upon auscultation suggest an improvement in pulmonary edema, which can be associated with fluid overload in conditions such as heart failure. However, for a client with peripheral edema, the primary therapeutic goal of furosemide is to reduce the excess fluid in the extremities, not just the lungs.

Choice C Reason
A decrease in serum potassium is a known side effect of furosemide due to its action on the kidneys, leading to increased excretion of potassium. While it's important to monitor for hypokalemia, a decrease in potassium does not directly indicate the therapeutic effect of reducing edema.

Choice D Reason
An increase in urine output from 30 mL per hour to 100 mL per hour is a direct indication that furosemide is achieving its therapeutic effect. Furosemide is a loop diuretic that increases urine production to help the body eliminate excess fluid, thereby reducing edema associated with conditions like hypertension.