Interventions for non-oliguric hyperkalaemia in preterm neonates.

Area of Science:

• Neonatalogy
• Pediatric Nephrology
• Clinical Pharmacology

Background:

• Non-oliguric hyperkalaemia is common in very low birth weight (VLBW) and preterm infants within the first 48 hours of life.
• Defined as plasma potassium > 6.5 mmol/L without acute renal failure, it poses significant risks to neonates.

Purpose of the Study:

• To evaluate the efficacy and safety of interventions for non-oliguric hyperkalaemia in preterm/VLBW infants.
• Focus on interventions used within the first 72 hours of life.

Main Methods:

• Systematic review of randomized and quasi-randomized controlled trials.
• Searched Cochrane CENTRAL, MEDLINE, EMBASE, and CINAHL databases.
• Included interventions for potassium redistribution, elimination, or arrhythmia prevention.

Main Results:

• Three small trials (74 infants) evaluated interventions; data quality was uncertain.
• Insulin and glucose showed a borderline significant reduction in mortality versus cation-exchange resin.
• Albuterol inhalation effectively reduced serum potassium levels without significant adverse effects.

Conclusions:

• Insufficient evidence for firm clinical practice recommendations due to small, low-quality studies.
• Insulin and glucose appear preferable to cation-exchange resin; both warrant further investigation.
• Effectiveness of other interventions like diuretics, exchange transfusion, and calcium remains untested in RCTs.