The Skeptics Guide to Emergency Medicine The Skeptics Guide to Emergency Medicine

SGEM#523: Everything Grows and Grows…Until it Doesn’t. Clinical Practice Guidelines for Faltering Weight

Oct 17, 2026 · 34m

Summary

Host Dennis Wren and guest Dr. Selena Kuchel discuss the new AAP/NASPGAN guideline renaming "failure to thrive" to "faltering weight." They review the shift from percentiles to Z-scores and the recommendation against routine diagnostic testing in stable, well-appearing infants. The episode highlights the need for accurate anthropometrics and targeted evaluation based on specific red flags rather than broad workups. Kuchel provides practical guidance on emergency department disposition, emphasizing that admission should be driven by acute medical instability or unsafe follow-up rather than i…

Topics discussed

Introduction and guest bio Case presentation: 7-month-old with poor weight gain Terminology shift: Failure to thrive vs. faltering weight New diagnostic criteria using Z-scores Moving beyond organic vs. non-organic causes Guideline scope, target audience, and clinical questions PICO framework: Population, interventions, and outcomes Author conclusions and implementation challenges Quality checklist: Evidence, balance, and conflicts Five key ED recommendations from the guideline Nerdy point: GRADE methodology and strong recommendations Nerdy point: Surrogate outcomes and missing harms Nerdy point: Practicality and validation of Z-scores Nerdy point: ED testing and GI red flags Nerdy point: Multidisciplinary panel and ED gaps Admission criteria vs. outpatient management SGM conclusion and bottom line for ED clinicians Case resolution and clinical application Family communication and closing remarks
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