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  • Title: Frequency of growth hormone deficiency in short statured children.
    Author: Awan TM, Sattar A, Khattak EG.
    Journal: J Coll Physicians Surg Pak; 2005 May; 15(5):295-8. PubMed ID: 15907242.
    Abstract:
    OBJECTIVE: To determine the frequency of growth hormone deficiency among short stature children referred for growth hormone evaluation. DESIGN: A cross-sectional survey. PLACE AND DURATION OF STUDY: The study was conducted in the Department of Chemical Pathology and Endocrinology, Armed Forces Institute of Pathology, Rawalpindi, from June 1999 to July 2000. PATIENTS AND METHODS: A total of 293 children were referred for growth hormone evaluation. All the patients underwent thorough clinical evaluation including recording of height, weight, presence of chronic diseases and malnutrition. Twenty children were excluded for various reasons. Screening for GH deficiency was carried out by exercise stimulation test and/or L-dopa stimulation test. The children with GH level < 10 mIU/L on screening tests were provisionally considered to have GH deficiency. These children underwent insulin tolerance test (ITT). RESULTS: Out of 273 children, 189 were subjected to both exercise and L-dopa stimulation test, while 60 patients underwent only exercise stimulation test. The remaining 24 patients were subjected to L-dopa administration alone because of their physical weakness or inability to perform exercise. Sixty-six patients exhibited GH levels < 10 mIU/L on screening tests. The frequency of GH deficiency was found to be 24.17% on screening. Out of these 66 patients, 54 underwent an ITT, while 12 patients did not report back for the test. Thirty-eight children showed lack of response on ITT, therefore, after ITT, the frequency of GH deficiency was revealed to be 13.9%. CONCLUSION: GH deficiency is responsible for about 14% cases of short stature in a hospital setting. Screening tests showed a positive predictive value of 70.4% and a false positivity of 6.8%.
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