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Rapid cardiovascular effects of growth hormone treatment in short prepubertal children: impact of treatment duration
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
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2012 (English)In: Clinical Endocrinology, ISSN 0300-0664, E-ISSN 1365-2265, Vol. 77, no 6, 877-884 p.Article in journal (Refereed) Published
Abstract [en]

Objective Previous studies show that growth hormone (GH) treatment increases cardiac dimensions in short children with GH deficiency (GHD) and has diverse cardiac effects in children with idiopathic short stature (ISS). This study was performed to assess the effect of GH on the cardiovascular system in short children with a broad range of GH secretion and GH sensitivity/responsiveness.

Design and patients In this prospective, multicentre study, short prepubertal children diagnosed with isolated GHD (89) or ISS (38) were followed during 2 years of GH treatment. They were randomized to receive either a standard (43 mu g/kg/day) or an individualized GH dose (range 17100 mu g/kg/day) based on GH responsiveness estimated by a prediction model and distance to target height. Echocardiography, blood pressure and electrocardiography were performed at baseline, 3, 12 and 24 months.

Results Left ventricular mass (LVM) indexed to body surface area increased significantly during 2 years of GH treatment in both GHD and ISS irrespective of randomized dose. This change was already apparent at 3 months, when standard deviation scores (SDS) of wall thickness and diameter were increased. At 24 months, left ventricular diameter SDS remained increased, whereas myocardial thickness SDS returned to baseline values. There was no impairment of systolic or diastolic function. There was no correlation with treatment dose and LVM SDS at 24 months.

Conclusions Irrespective of GH status, there was a rapid increase in LVM during GH treatment in short children. At 3 months, wall thickness and diameter were increased, whereas only diameter remained increased at 24 months.

Place, publisher, year, edition, pages
2012. Vol. 77, no 6, 877-884 p.
National Category
URN: urn:nbn:se:umu:diva-65927DOI: 10.1111/j.1365-2265.2012.04456.xISI: 000310962800014OAI: diva2:612042
Available from: 2013-03-19 Created: 2013-02-13 Last updated: 2013-03-19Bibliographically approved

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Teien, DagKriström, Berit
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