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Abstract
Vitamin D deficiency is a common problem in both
developed and developing countries due to inadequate diet
containing vitamin D or inadequate exposure to ultraviolet
light.Breast milk also is low in vitamin D and its metabolites. It is
clear that the most important biochemical findings in this illness is
hypocalcaemia. The calcium ion plays an important role in
excitation contraction coupling in the cardiac muscle. Cardiac
dysfunction occurs during acute reduction in serum calcium
levels.Chronic hypocalcemia has also been associated with
myocardiac dysfunction. Many studies suggested that the heart may
be affected in vitamin D deficiency rickets especially in the third
biochemical stage. Several clinical works have prop sed that vitamin
D may also be beneficial to the cardiovascular system . In the current
study, we aimed to evaluate cardiac functions in children with
vitamin D deficiency rickets with or without hypocalcemia before
and after treatment