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Year : 2012  |  Volume : 16  |  Issue : 5  |  Page : 791-795

Linear growth in relation to the circulating concentration of insulin-like growth factor-I in young children with acyanotic congenital heart disease with left to right shunts before versus after surgical intervention

1 Department of Pediatric Endocrinology, Hamad General Hospital, Doha, Qatar
2 Department of Cardiology, Hamad General Hospital, Doha, Qatar

Correspondence Address:
Ashraf T Soliman
Department of Pediatrics, Hamad General Hospital, Doha
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2230-8210.100678

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Objectives: The aim was to determine the degree of linear growth retardation of patients with congenital acyanotic heart disease at presentation and the magnitude of catch-up growth, if any, in relation to their echocardiographic changes and insulin-like growth factor- I (IGF-I) concentration before versus after surgical intervention. Materials and Methods: This prospective study recorded the anthropometric data and measured the circulating IGF-I, free thyroxin (FT4), and thyrotropin (TSH) of 27 infants and children with congenital acyanotic heart disease with left to right shunt (10 with VSD, 8 with ASD, 9 PDA) without heart failure, or severe pulmonary hypertension, before and 12 months or more after surgical or catheter intervention. Eighty normal age and sex- matched normal siblings of these patients were included as controls for the auxologic data. Results: At presentation, patients' mean age = 35.6 ± 26 months, height SDS (HtSDS) = -1.6 ± 1.1, and body mass index (BMI) = 15.1 ± 2.5. They were significantly shorter and with lower BMI compared to normal controls (HtSDS = 0.25 ± 0.3, BMI = 16.4 ± 1.5). One year or more after catheter or surgical treatment, the HtSDS and BMI increased significantly in patients to -0.55 ± 0.9 and 15.9 ± 1.5, respectively). IGF-I levels increased from 46.8 ± 29 mcg/L before to 77.3 ± 47.6 mcg/L after intervention. No significant change has been detected in circulating FT4 or TSH concentrations. The HtSDS after treatment was correlated with the IGF-I concentration (r = 0.804, P < 0.001). The change in the HtSDS after intervention was correlated significantly with BMI (r = 0.594, P 0.001) and negatively with age (r = -0.52, P< 0.01). The shunt size was correlated negatively with BMI and HtSDS before intervention (r = -0.35, P < 0.01 and 0.01 and r = -0.461, P < 0.05, respectively). GVSDS after intervention surgery was correlated with BMI after intervention (r = 0.495, P < 0.001) and negatively with the age at operation (r = -0.683, P < 0.001). Conclusions: In congenital acyanotic heart diseases, early surgical interference and weight gain have beneficial effect on postoperative growth spurt. This catch-up growth appears to be mediated through activation of the GH/IGF-I system and suggests an important role of increasing BMI (an indicator of nutrition) as an imperative factor.

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