OBJECTIVE
Fetal urine is the main source of amniotic fluid, and alterations in urine production have an impact on amniotic fluid dynamics. Intraamniotic arginine vasopressin is absorbed into fetal plasma, but fetal antidiuretic responses may be obscured by vasoconstrictor (V1 receptor) actions of
OBJECTIVE
In nephrogenic diabetes insipidus (NDI), the kidney is unable to concentrate urine despite elevated concentrations of the antidiuretic hormone arginine-vasopressin. In congenital NDI, polyuria and polydipsia are present from birth and should be immediately recognized to avoid severe
BACKGROUND
Thanatophoric dwarfism is a lethal bone dysplasia causing severe disturbance in body proportions, shortening and deformation of the long bones and maldevelopment of the chest leading to severe respiratory failure and early death. The disease is caused usually by de novo mutation in the
For an endocrinologist, nephrogenic diabetes insipidus (NDI) is an end-organ disease, that is the antidiuretic hormone, arginine-vasopressin (AVP) is normally produced but not recognized by the kidney with an inability to concentrate urine despite elevated plasma concentrations of AVP. Polyuria with
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