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Electrolyte Disturbance in an Infant with Failure to Thrive

Hannah Kim, Amanda Hesselton, Alicia M. Neu and Jeffrey Fadrowski
Pediatrics in Review October 2020, 41 (Supplement 1) S82-S84; DOI: https://doi.org/10.1542/pir.2018-0268
Hannah Kim
*Division of Pediatric Nephrology, Johns Hopkins University School of Medicine, Baltimore, MD
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Amanda Hesselton
†Department of Pediatrics, Johns Hopkins Hospital, Baltimore, MD
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Alicia M. Neu
*Division of Pediatric Nephrology, Johns Hopkins University School of Medicine, Baltimore, MD
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Jeffrey Fadrowski
*Division of Pediatric Nephrology, Johns Hopkins University School of Medicine, Baltimore, MD
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  1. Hannah Kim, MD*
  2. Amanda Hesselton, MD†
  3. Alicia M. Neu, MD*
  4. Jeffrey Fadrowski, MD, MHS*
  1. *Division of Pediatric Nephrology, Johns Hopkins University School of Medicine, Baltimore, MD
  2. †Department of Pediatrics, Johns Hopkins Hospital, Baltimore, MD
  • AUTHOR DISCLOSURE

    Dr Neu has participated in multicenter research funded by Amgen, Roche, Relypsa, and Luitpold. Drs Kim, Hesselton, and Fadrowski have disclosed no financial relationships relevant to this article. This commentary does not contain a discussion of an unapproved/investigative use of a commercial product/device.

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A 6-week-old girl was born to a healthy mother via uncomplicated vaginal delivery at full term and subsequently had a normal newborn screen. She had a birthweight of 4.48 kg (large for gestational age, 97% percentile). At her 1-month health supervision visit, she weighed 3.7 kg. Although offered 2 to 3 oz of pumped human milk each feed, she was taking approximately 1 oz every 2 hours without cyanosis, tachypnea, or sweating. She had no trouble latching onto the bottle, a normal suck and swallow, and no choking with feeds. After feeding, she had frequent nonbloody/nonbilious vomiting episodes that most often occurred soon after a feed, but occasionally a few hours later. Her primary care provider recommended fortifying the human milk with formula to 22 kcal/ounce, but it was not well-tolerated due to vomiting. On a repeat weight check 2 weeks before admission, she demonstrated continued poor weight gain and was started on a histamine 2-blocker for possible gastrointestinal reflux. Two days before admission, this was switched to a proton-pump inhibitor with no improvement in symptoms. The primary care provider obtains bloodwork, urine studies, and an abdominal ultrasound as part of an evaluation for failure to thrive. The bloodwork shows the following: sodium 115 mmol/L, potassium 8.7 mmol/L, chloride 71 mmol/L, carbon dioxide 15 mmol/L, urea nitrogen 53 mg/dL, creatinine 0.8 mg/dL, and glucose 50 mg/dL. The mother is asked to …

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Pediatrics in Review: 41 (Supplement 1)
Pediatrics in Review
Vol. 41, Issue Supplement 1
1 Oct 2020
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Electrolyte Disturbance in an Infant with Failure to Thrive
Hannah Kim, Amanda Hesselton, Alicia M. Neu, Jeffrey Fadrowski
Pediatrics in Review Oct 2020, 41 (Supplement 1) S82-S84; DOI: 10.1542/pir.2018-0268

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Electrolyte Disturbance in an Infant with Failure to Thrive
Hannah Kim, Amanda Hesselton, Alicia M. Neu, Jeffrey Fadrowski
Pediatrics in Review Oct 2020, 41 (Supplement 1) S82-S84; DOI: 10.1542/pir.2018-0268
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