What is the maximum infusion rate for potassium supplements administered IV?

The maximum infusion rate for potassium supplements administered intravenously is generally accepted to be 20 mEq per hour when using peripheral veins. This rate is chosen to minimize the risk of hyperkalemia, which can lead to serious cardiovascular consequences, and to reduce the chance of local irritation or phlebitis at the infusion site.

When potassium is infused rapidly, it can cause significant shifts in serum potassium levels, potentially leading to dangerous complications such as cardiac arrest. Therefore, adhering to this maximum rate ensures patient safety while allowing for adequate potassium replacement, especially in situations of significant deficiency or ongoing losses.

In central venous administration, the rates can be higher, but in general practice, 20 mEq per hour is the standard for peripheral infusions to balance efficacy and safety effectively. Understanding the limitations of intravenous potassium administration is paramount in clinical settings, ensuring that patient care avoids potentially life-threatening situations.