Severe Hyperkalemia Immediately After Birth.

Area of Science:

• Neonatology
• Pediatric Cardiology
• Critical Care Medicine

Background:

• Hyperkalemia is a critical condition causing arrhythmias, often multifactorial, stemming from impaired potassium secretion, transcellular shifts, or increased potassium load.
• Neonatal hyperkalemia presents unique challenges due to immature organ systems and rapid physiological changes.
• Early-onset sepsis and hemolytic anemia are potential contributing factors to severe hyperkalemia in newborns.

Observation:

• A male neonate developed monomorphic ventricular tachycardia two hours post-birth following a Cesarean section due to placental abruption.
• The neonate exhibited severe hyperkalemia (9.8 mmol/L), hemolytic anemia, thrombocytopenia, hypoglycemia, hypoxemia, and acidosis.
• Diagnosis of early-onset Candida albicans sepsis was confirmed 24 hours after birth, necessitating respiratory support and empirical therapies.

Findings:

• The neonate's severe hyperkalemia was associated with significant cardiac arrhythmias (ventricular tachycardia) and hemodynamic instability.
• Treatment involved calcium gluconate, insulin, sorbisterit enema, and ultimately, exchange transfusion.
• Laboratory findings revealed concurrent issues including hemolytic anemia, thrombocytopenia, hypoglycemia, and acidosis, complicating the clinical picture.

Implications:

• This case underscores the critical importance of early recognition and aggressive management of severe neonatal hyperkalemia, particularly when accompanied by cardiac compromise.
• Timely decision-making regarding exchange transfusion is essential for improving outcomes in neonates with hyperkalemia, electrocardiogram changes, and hemodynamic instability.
• The multifactorial etiology in this case highlights the need for a comprehensive diagnostic approach in neonates presenting with hyperkalemia and associated critical conditions.