What is the maximum IV potassium infusion rate per hour?

What is the maximum IV potassium infusion rate per hour?

• A. 5 mEq/hr
• B. 10 mEq/hr
• C. 15 mEq/hr
• D. 20 mEq/hr

Answer: (B)

Potassium directly affects cardiac conduction, so infusing it too quickly can trigger dangerous arrhythmias and tissue irritation. To keep the heart and vessels safe, IV potassium is given slowly with a practical ceiling. In most adults, the maximum IV potassium infusion rate is 10 mEq per hour when given through a peripheral line and without continuous cardiac monitoring. Higher rates (like 15 or 20 mEq/hr) carry a much greater risk and are not standard practice unless there’s very close monitoring and a central line in a ICU setting. A slower rate (such as 5 mEq/hr) may be appropriate for milder deficits or specific clinical situations, but it’s not the standard maximum for rapid correction. Therefore, 10 mEq per hour is the best answer.

Potassium directly affects cardiac conduction, so infusing it too quickly can trigger dangerous arrhythmias and tissue irritation. To keep the heart and vessels safe, IV potassium is given slowly with a practical ceiling. In most adults, the maximum IV potassium infusion rate is 10 mEq per hour when given through a peripheral line and without continuous cardiac monitoring. Higher rates (like 15 or 20 mEq/hr) carry a much greater risk and are not standard practice unless there’s very close monitoring and a central line in a ICU setting. A slower rate (such as 5 mEq/hr) may be appropriate for milder deficits or specific clinical situations, but it’s not the standard maximum for rapid correction. Therefore, 10 mEq per hour is the best answer.