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  • Title: The response to treatment with pituitary growth hormone: the New Zealand experience.
    Author: Livesey JH, Cuneo RC, Donald RA, Harris RG, Ibberston HK, Costello JM, Holdaway IM, Gluckman PD, Fraser TR, Chapman GE.
    Journal: N Z Med J; 1989 Aug 09; 102(873):399-402. PubMed ID: 2761875.
    Abstract:
    Ninety-four growth hormone deficient New Zealand children were treated with thrice weekly intramuscular injections of human pituitary growth hormone (GH) from 1979 to 1985 and the results from 43 children were analysed in detail. Their height velocity was mean (SD) 4.0 (1.9) cm/yr immediately prior to treatment and 8.5 (3.1) cm/yr in the first year of treatment. In each of the first three years of treatment the height velocity was significantly increased (p less than 0.001), but there was a significant decline in height velocity between the first and second, and second and third years. Nevertheless each year of treatment gave a highly significant gain in relative height. Bone age did not advance more rapidly than chronological age during the first two years of treatment, but did so subsequently. The response to GH, as assessed by the increase in relative height, was negatively correlated with the relative height at the start of treatment and with the maximum pretreatment plasma GH response to insulin hypoglycaemia. There was no correlation with pretreatment relative height velocity or aetiology of GH deficiency. Height velocity improved in five of 14 children treated with thyroxine after starting GH. Discontinuation of GH for one year in 34 children resulted in a highly significant reduction in growth rate from 7.5 (2.4) cm/yr to 2.5 (2.0) cm/yr, however four prepubertal children continued to grow at a rate exceeding 4 cm/yr.
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