In this episode of "PICU Doc on Call," Dr. Pradip Kamat and Dr. Rahul Damania dive into a fascinating case of a 9-month-old infant who comes in with hypoglycemia and seizures. Together, they break down the basics of glucose metabolism, walk through the causes of hypoglycemia, and discuss the best diagnostic strategies and acute management steps. They put a special spotlight on using diazoxide for hyperinsulinemic hypoglycemia, discussing not only how it works but also its potential side effects. The conversation also discusses dietary interventions for metabolic disorders and highlights the importance of rapid diagnosis and personalized treatment.

Show Highlights:

Pediatric hypoglycemia and its implications in infants
Case study of a 9-month-old infant with hypoglycemia and seizures
Physiology of glucose metabolism and its regulation
Causes of hypoglycemia, categorized into primary and secondary etiologies
Diagnostic approaches for identifying the cause of hypoglycemia
Initial management strategies for acute hypoglycemia
Long-term treatment options based on underlying causes
Importance of timely diagnosis and intervention in the PICU setting
Pharmacologic management of hyperinsulinemic hypoglycemia, including the use of diazoxide
Multidisciplinary care and follow-up for pediatric patients with hypoglycemia

References:

Fuhrman & Zimmerman - Textbook of Pediatric Critical Care Chapter 84 Alder M et al. Pediatric Sepsis. Pages 1293-1309
Honarmand K, Sirimaturos M, Hirshberg EL, Bircher NG, Agus MSD, Carpenter DL, Downs CR, Farrington EA, Freire AX, Grow A, Irving SY, Krinsley JS, Lanspa MJ, Long MT, Nagpal D, Preiser JC, Srinivasan V, Umpierrez GE, Jacobi J. Society of Critical Care Medicine Guidelines on Glycemic Control for Critically Ill Children and Adults 2024. Crit Care Med. 2024 Apr 1;52(4):e161-e181. doi: 10.1097/CCM.0000000000006174. Epub 2024 Jan 19. PMID: 38240484.
Rosenfeld E, Thornton PS. Hypoglycemia in Neonates, Infants, and Children. 2023 Aug 22. In: Feingold KR, Ahmed SF, Anawalt B, Blackman MR, Boyce A, Chrousos G, Corpas E, de Herder WW, Dhatariya K, Dungan K, Hofland J, Kalra S, Kaltsas G, Kapoor N, Koch C, Kopp P, Korbonits M, Kovacs CS, Kuohung W, Laferrère B, Levy M, McGee EA, McLachlan R, Muzumdar R, Purnell J, Rey R, Sahay R, Shah AS, Singer F, Sperling MA, Stratakis CA, Trence DL, Wilson DP, editors. Endotext [Internet]. South Dartmouth (MA): MDText.com, Inc.; 2000–. PMID: 37665756.
Rayas MS, Salehi M. Non-Diabetic Hypoglycemia. 2024 Jan 27. In: Feingold KR, Ahmed SF, Anawalt B, Blackman MR, Boyce A, Chrousos G, Corpas E, de Herder WW, Dhatariya K, Dungan K, Hofland J, Kalra S, Kaltsas G, Kapoor N, Koch C, Kopp P, Korbonits M, Kovacs CS, Kuohung W, Laferrère B, Levy M, McGee EA, McLachlan R, Muzumdar R, Purnell J, Rey R, Sahay R, Shah AS, Singer F, Sperling MA, Stratakis CA, Trence DL, Wilson DP, editors. Endotext [Internet]. South Dartmouth (MA): MDText.com, Inc.; 2000–. PMID: 27099902.
Nakrani MN, Wineland RH, Anjum F. Physiology, Glucose Metabolism. [Updated 2023 Jul 17]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK560599/
Chen X, Feng L, Yao H, Yang L, Qin Y. Efficacy and safety of diazoxide for treating hyperinsulinemic hypoglycemia: A systematic review and meta-analysis. PLoS One. 2021 Feb 11;16(2):e0246463. doi: 10.1371/journal.pone.0246463. PMID: 33571197; PMCID: PMC7877589.
Kucharczyk P, Albano G, Deisl C, Ho TM, Bargagli M, Anderegg M, Wuest S, Konrad D, Fuster DG. Thiazides Attenuate Insulin Secretion Through Inhibition of Mitochondrial Carbonic Anhydrase 5b in β -Islet Cells in Mice. J Am Soc Nephrol. 2023 Jul 1;34(7):1179-1190. Doi: 10.1681/ASN.0000000000000122. Epub 2023 Apr 17. PMID: 36927842; PMCID: PMC10356162.

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