Open AccessA Newborn Admitted with Hyponatremia and Hyperkalemia Clinic and Diagnosed with Primary Hypoaldosteronism
Author(s) -
Merve Şakar,
Semra Çeti̇nkaya,
İlter Arifoğlu Barış,
Akmet Öktem,
Ayşegül Zencıroğlu,
Rüveyde Bundak,
Şenay Savşa Erdeve
Publication year - 2021
Publication title -
trends in pediatrics
Language(s) - English
Resource type - Journals
ISSN - 2718-0085
DOI - 10.5222/tp.2021.19483
Subject(s) - hypoaldosteronism , hyperkalemia , hyponatremia , medicine , aldosterone , fludrocortisone , primary adrenal insufficiency , endocrinology , plasma renin activity , mineralocorticoid , pediatrics , renin–angiotensin system , hydrocortisone , blood pressure
Primary hypoaldosteronism is a rare autosomal recessive disorder that causes defects in aldosterone synthase enzyme activity due to an inactivating mutation in the CYP11B2 gene. Patients with primary hypoaldosteronism exhibit symptoms such as vomiting, dehydration, feeding problems, and failure to thrive. This disease is characterized by hyponatremia, hyperkalemia, metabolic acidosis, high renin, and low aldosterone levels. It also causes salt loss syndrome in the newborn period. In this article, we described a newborn with primary hypoaldosteronism who showed feeding problems and weight loss. Laboratory findings revealed hyponatremia, hyperkalemia, high plasma renin, and low aldosterone levels, while genetic analysis showed homozygous c.788T>A (p.Ile263Asn) variant in the CYP11B2 gene (NM_000498.3). Our patient responded well to oral salt and fludrocortisone treatments. Early diagnosis and treatment are particularly important because primary hypoaldosteronism causes life-threatening electrolyte disorders and salt loss syndrome.