What is the critical infusion guideline for potassium chloride?

• A. Do not give more than 10 mEq/hr
• B. Can be given rapidly at high rates
• C. May be given IV push
• D. Requires no monitoring

Answer: (A)

Potassium chloride carries a high risk of causing dangerous heart rhythms if given too quickly, so the key safety rule is to infusion it slowly with careful monitoring. The maximum rate for a peripheral IV is typically 10 mEq per hour, and it should never be given as an IV push. Because potassium directly affects cardiac conduction, you must use an IV pump, dilute appropriately, and monitor the patient with telemetry and frequent checks of serum potassium and overall fluid status. Rapid administration or pushing it into a vein can precipitate life-threatening arrhythmias or cardiac arrest, which is why that faster, push, or nonmonitoring approach is not acceptable.