What is the formula for calculating the renal clearance?

This is because hyperkalemia is a condition where the blood potassium level is too high.

This can cause cardiac arrhythmias, muscle weakness, and paralysis. Therefore, the nurse should administer intravenous insulin and glucose to lower the blood potassium level by shifting it into the cells.

Choice A is wrong because encouraging the patient to consume a high- potassium diet would increase the blood potassium level and worsen the condition.

Choice C is wrong because administering a potassium-sparing diuretic would prevent the excretion of excess potassium and aggravate the hyperkalemia.

Choice D is wrong because encouraging the patient to limit fluid intake is not relevant to the management of hyperkalemia and may cause dehydration.

Clearance = urine flow rate x urine concentration / plasma concentration. This is the formula for calculating the renal clearance of a substance that is neither reabsorbed nor secreted by the tubules. Renal clearance is the volume of plasma that would have to be filtered by the glomeruli each minute to account for the amount of that substance appearing in the urine each minute.

Choice B is wrong because it has the urine concentration and plasma concentration inverted.

This would give an incorrect value for renal clearance.

Choice C is wrong because it has the plasma flow rate instead of the urine flow rate.

Plasma flow rate is not directly related to renal clearance.

Choice D is wrong because it has both the plasma flow rate and the urine concentration and plasma concentration inverted.

This would give an incorrect value for renal clearance.

Normal ranges for renal clearance vary depending on the substance, age, sex, and body size.

For example, the normal range for creatinine clearance is 85-125 mL/min for males and 75-115 mL/min for females.