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Glucagon Stimulation Test for Childhood Growth Hormone Deficiency: Timing of the Peak is Important by David Strich; Nachum Terespolsky; David Gillis is a Medicine article available to read on EtoBox.

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Objectives In the glucagon stimulation test (GST) growth hormone (GH) secretion is considered sufficient when at least 1 value is >10 ng/mL. Because GH typically peaks at 90 or 120 minutes, we evaluated whether peak occurrence at other times ("atypical") signifies abnormal GH secretion. Study design A retrospective review of 222 GSTs was conducted to determine these outcomes: 1) frequency of GH deficiency per confirmatory clonidine or arginine stimulation test in typical versus atypical GSTs, and 2) growth velocity standard deviation score (GVSDS) in patients with typical versus atypical GSTs.Results Of 222 tests, 57 GST results (25.7%) were atypical, and 54 GST results (24.3%) were deficient. Atypical deficient tests had a higher chance than typical deficient tests of predicting GH deficiency per confirmatory test (15/21, 71.4% versus 14/33, 42.4%; P < .05). Patients with deficient atypical GST results and sufficient confirmatory tests (n ‫؍‬ 6) had a lower GVSDS than patients with deficient typical GST results (n ‫؍‬ 18;

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Author

David Strich; Nachum Terespolsky; David Gillis

Publisher

Elsevier BV

Published

2009

Language

EN

Field

Medicine (Health Sciences)