A descriptive cross-sectional hospital-based study was conducted with the objectives to study clinical presentations, complications and outcomes of breastfeeding-associated hypernatraemia (BFAHN) in full-term neonates admitted to Ibrahim Malik Teaching Hospital, Khartoum, Sudan, during the period September 2017–2019. Eighty-four neonates with BFAHN were enrolled in the study. Collected demographic data of the neonates and their mothers included age at presentation, gender, birth weight, current weight, mode and place of delivery, maternal age, parity, education level, time of starting breastfeeding, presenting symptoms and signs, complications and outcome. The prevalence of the BFAHN was 15.5%. The mean age at presentation was 9.38 ± 5.95 days, range of 2–27 days and 59.5% were males. Most of them delivered vaginally (85.7%) and in hospital (63.1%). The mothers were multigravida in 58% and with a mean age of 28.14 ± 6.68 years and 3/4th of them started breastfeeding within the first hour. The most common symptoms and signs were fever, poor feeding, decreased urine output, jaundice, dehydration and loss of weight more than 10% of birth weight. The mortality rate was 21.4%. Complications included acute kidney injury in 82.1%, two patients needed peritoneal dialysis, one-third developed convulsions and two patients had intracranial bleeding. Factors associated with the development of the BFAHN were excessive loss of weight, multigravida, low maternal education level and vaginal delivery. Associated factors for death included thrombocytopenia, convulsions and severe hypernatraemia. Breast-milk sodium levels in mothers of 10 of the patients were high compared to 10 controls.
Key words: Breastfeeding; Hypernatraemia; Neonates; Sudanese; Associations; Complications.
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