Pediatric Hypokalemia Treatment & Management
- Author: Michael J Verive, MD, FAAP; Chief Editor: Timothy E Corden, MD more...
Note the following:
- The treatment of hypokalemia depends on severity and etiology.
- Unlike hyponatremia, in which the total body sodium deficit can be readily estimated, serum potassium may not accurately reflect total body stores. Indeed, during diabetic ketoacidosis, serum potassium levels are usually initially elevated, even in the face of severe depletion of total body potassium. Correction of acidosis in diabetic ketoacidosis may cause a precipitous drop in serum potassium levels.
- Treatment of hypokalemia should be directed at the etiology of hypokalemia as well as its correction, as treatment of hypokalemia carries with it a significant risk of iatrogenic hyperkalemia.
- Transient, asymptomatic, or mild hypokalemia may spontaneously resolve or may be treated with enteral potassium supplements.
- Symptomatic or severe hypokalemia should be corrected with a solution of intravenous potassium.
- Whenever practical, treatment of hypokalemia should be performed in a monitored setting with medications and personnel available to intervene in the event that treatment results in symptomatic hyperkalemia.
After the initial phase of hypokalemia therapy is completed, focus further inpatient care on matching potassium intake to losses, periodic testing of serum potassium levels, and electrocardiographic monitoring for hypokalemia or hyperkalemia due to therapy.
Alleviation of aggravating conditions, simplification of medication administration, and patient education form the basis of ongoing patient health and safety.
Patients with severe or symptomatic hypokalemia require transfer to an ICU for intravenous potassium supplementation and continuous electrocardiographic monitoring.
Except for excision of tumors leading to hypokalemia, management is nonsurgical.
After resolution, consultation with subspecialists (including, but not limited to, endocrinologist, nephrologist, pulmonologist, gastroenterologist, geneticist, or specialist in metabolic disease) may be necessary to diagnose and manage predisposing conditions.
Consultation with a dietitian may be helpful in cases of hypokalemia due to inadequate dietary intake.
Consultation with mental health professionals may be necessary for ongoing treatment of hypokalemia secondary to anorexia and/or bulimia.
Dietary modification may be necessary for patients with excessive potassium losses (eg, diuretic or laxative use) or patients with hypokalemia who are at increased risk, such as those receiving digoxin.
Avoidance of specific foods (eg, licorice) may also be necessary for high-risk individuals.
Patients with hypokalemic periodic paralysis may need to modify exercise regimens to avoid periods of strenuous exercise.
Patients at risk of hypokalemia from sweat losses should have adequate potassium and fluid available during activities likely to result in significant sweating and should be given anticipatory guidance regarding symptoms of hypokalemia.
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