Document Detail


Detection of surreptitious administration of analog insulin to an 8-week-old infant.
MedLine Citation:
PMID:  20385635     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
An 8-week-old infant presented to the emergency department with lethargy, tachycardia, and a blood glucose concentration of 1.8 mmol/L. After admission, hypoglycemia recurred on 3 additional occasions. Initial urinalysis results were negative for ketones, and the results of additional laboratory tests did not support the diagnosis of cortisol or growth hormone deficiency, oral hypoglycemic ingestion, or an inborn error of metabolism. Difficulty restoring and maintaining glucose concentrations along with a transient response to glucagon during 1 hypoglycemic episode suggested hyperinsulinism. In 1 hypoglycemic episode, elevated insulin and low C-peptide concentrations suggested exogenous insulin administration, but 2 subsequent blood samples obtained during hypoglycemia contained appropriately decreased concentrations of insulin. The insulin immunoassay initially used in this case (Roche ElecSys/cobas [Roche Diagnostics, Indianapolis, IN]) was insensitive to insulin analogs. Two additional immunoassays, 1 with intermediate (Immulite [Siemens, Deerfield, IL]) and 1 with broad (radioimmunoassay [Millipore, Inc, Billerica, MA]) reactivity to insulin analogs were used to characterize insulin in each of the critical blood samples. Samples obtained during hypoglycemia displayed a graded reactivity similar to that observed in type 1 diabetic patients prescribed insulin analogs, whereas a sample obtained from the patient and a control subject during euglycemia showed equal reactivity among the 3 assays. These data suggested administration of insulin analog to the child, and further characterization of insulin by using tandem mass spectrometry confirmed the presence of Humalog. The child was subsequently placed in foster care with no further recurrence of hypoglycemia.
Authors:
Rebecca P Green; Abby S Hollander; Mario Thevis; Andreas Thomas; Dennis J Dietzen
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Publication Detail:
Type:  Case Reports; Journal Article     Date:  2010-04-12
Journal Detail:
Title:  Pediatrics     Volume:  125     ISSN:  1098-4275     ISO Abbreviation:  Pediatrics     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-03     Completed Date:  2010-05-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376422     Medline TA:  Pediatrics     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e1236-40     Citation Subset:  AIM; IM    
Affiliation:
Department of Pediatrics, Washington University, St Louis, MO 63110, USA.
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MeSH Terms
Descriptor/Qualifier:
C-Peptide / blood
Diabetes Mellitus, Type 1 / drug therapy
Diagnosis, Differential
Emergency Service, Hospital
Female
Glucagon / blood
Humans
Hyperinsulinism / blood,  chemically induced*,  diagnosis
Hypoglycemia / blood,  chemically induced*,  diagnosis
Hypoglycemic Agents / administration & dosage,  toxicity*
Infant
Insulin / administration & dosage,  analogs & derivatives*,  blood,  toxicity
Male
Munchausen Syndrome by Proxy / diagnosis*,  psychology
Pregnancy
Pregnancy in Diabetics / drug therapy
Recurrence
Chemical
Reg. No./Substance:
0/C-Peptide; 0/Hypoglycemic Agents; 0/insulin aspart; 11061-68-0/Insulin; 9007-92-5/Glucagon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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