The healthcare provider prescribes magnesium sulfate 300 mg/hour IV. The IV bag is contains magnesium sulfate 4 grams in dextrose 5% in water (DW) 500 mL. How many mL/hour should the nurse set the infusion pump? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

A. When signs of severe hypoglycemia occur:
Glucagon is used to rapidly increase blood glucose levels in cases of severe hypoglycemia when the person is unable to eat or drink. It is administered in emergency situations where the individual is unconscious or unable to consume oral glucose.

B. Before meals to prevent hyperglycemia:
Glucagon is not used to prevent hyperglycemia or as a routine preventive measure. It is specifically for emergency treatment of severe hypoglycemia.

C. When unable to eat during sick days:
While glucagon can be used if the person is unable to eat due to severe hypoglycemia, it is not typically used as a preventative measure for situations where the client is simply unable to eat. Regular monitoring and management of blood glucose levels are necessary during illness.

D. At the onset of signs of diabetic ketoacidosis:
Glucagon is not used to treat diabetic ketoacidosis (DKA). DKA is managed with insulin, fluids, and electrolytes, not glucagon.

A) Avoid prolonged exposure to direct sunlight: While erythromycin can increase sensitivity to sunlight, this is not directly related to the interaction between oral contraceptives and erythromycin. The primary concern with erythromycin and oral contraceptives is their interaction rather than sun exposure.

B) Stop the oral contraceptive immediately: There is no need to stop oral contraceptives when taking erythromycin. However, erythromycin can potentially reduce the effectiveness of oral contraceptives, so additional precautions should be taken rather than discontinuing the contraceptive.

C) Take the medications at least 12 hours apart: Timing of administration is not a primary concern for this interaction. The main issue is the potential reduction in contraceptive efficacy rather than timing the doses of the medications.

D) Use an additional form of contraception: Erythromycin can potentially decrease the effectiveness of oral contraceptives due to its effect on liver enzymes and drug metabolism. It is advisable to use an additional form of contraception to prevent unintended pregnancy while taking erythromycin.