A nurse is preparing to administer lidocaine via continuous IV infusion at 4 mg/min. Available is lidocaine 2 g dextrose 5% in water 500 mL. The nurse should set the IV pump to deliver how many mL/hr?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Choice A Reason:
Hypokalemia is correct. Hydrochlorothiazide is a thiazide diuretic that promotes the excretion of sodium and water in the kidneys, leading to increased urine production. However, it can also cause the loss of potassium (hypokalemia) as a side effect. Hypokalemia can manifest with symptoms such as muscle weakness, fatigue, irregular heart rhythms, and muscle cramps.
Choice B Reason:
Hypermagnesemia is incorrect. Hydrochlorothiazide typically promotes the loss of magnesium rather than causing elevated magnesium levels.
Choice C Reason:
Hypernatremia is incorrect. Hydrochlorothiazide is more likely to cause a decrease in sodium levels (hyponatremia) rather than an increase (hypernatremia).
Choice D Reason:
Hypocalcemia is incorrect. Hydrochlorothiazide can cause increased excretion of calcium but it's not a common adverse effect compared to the loss of potassium (hypokalemia).

Choice A Reason:
Furosemide is not correct. Furosemide is a diuretic used to treat conditions like heart failure and edema by increasing urine output. It is not a contraindication for sildenafil. However, it's essential to monitor blood pressure when these medications are used together, as both can potentially lower blood pressure.
Choice B Reason:
Albuterol is not correct. Albuterol is a bronchodilator commonly used to treat asthma and other respiratory conditions. It doesn't have direct contraindications with sildenafil for erectile dysfunction. Although both medications can cause some cardiovascular effects, they are not typically considered contraindications for each other.
Choice C Reason:
Indomethacin is not correct. Indomethacin is a nonsteroidal anti-inflammatory drug (NSAID) used to reduce inflammation and pain. While it can have effects on blood pressure and the cardiovascular system, it is not a direct contraindication for sildenafil specifically for erectile dysfunction.
Choice D Reason:
Nitroglycerin is correct. Nitroglycerin is a contraindication for sildenafil. Both medications can cause a significant drop in blood pressure. When taken together, they can potentiate each other's effects, leading to a severe decrease in blood pressure, which can be dangerous and potentially life-threatening. Therefore, individuals using nitroglycerin or any nitrate medications should not take sildenafil or other medications for erectile dysfunction due to the risk of hypotension (dangerously low blood pressure).