What should be assessed before administering IV potassium?

Before administering intravenous potassium, it is crucial to assess renal function and urine output. Potassium is primarily excreted through the kidneys, so any impairment in renal function can lead to potassium retention and possible hyperkalemia, which can have serious cardiovascular consequences. Monitoring urine output is also critical because it provides insight into kidney performance. If a patient is not producing urine, administering potassium could dangerously increase serum potassium levels.

While monitoring blood pressure and heart rate is important in patient care, it is not specifically tied to potassium administration. Liver function tests are not directly related to potassium management and electrolyte levels, while important, do not provide the same critical insight into the patient's ability to tolerate additional potassium as renal function does. Therefore, assessing renal function and urine output is the most pertinent factor before giving IV potassium.