the high percentage of healthy children with vitamin D deficiency is evident, and current recommendations for prophylaxis are not carried out by the population as recommended by current guidelines.
Introduction: vitamin D maintains the concentration of calcium and phosphorus within the physiological range, allowing normal metabolism and bone mineralization. Recently, vitamin D deficiency has been related not only with rickets but also with an increased risk of other pathologies. The aim of this descriptive, observational, crosssectional study was to assess vitamin D concentration levels in a
Renal artery stenosis represents a rare cause of neonatal arterial hypertension of renovascular origin, having been described few cases in the literature at this stage of life. Most patients with this disease remain asymptomatic; hypertension can be detected in routine pediatric revisions. Diagnosis can be performed by combining biochemical and radiological findings. The initial management consists of pharmacological therapy in order to achieve adequate growth. Subsequently, it is necessary to assess definitive repair of the vascular lesion or nephrectomy in the case of functional abolition of the affected kidney. We present a term newborn female, with arterial hypertension and an important congestive heart failure, caused by a unilateral renal artery stenosis, with functional abolition and atrophy of the affected kidney, which required an important inotropic and antihypertensive support during her first days of life, with significant clinical improvement subsequently.
Presentación de casos clínicos RESUMENLa enfermedad hepática gestacional aloinmune, previamente conocida como hemocromatosis neonatal, se caracteriza por enfermedad hepática grave que se inicia en el período neonatal, asociada al acúmulo intra-y extrahepático de hierro. Se postula un potencial origen aloinmune, lo que ha abierto posibilidades en el tratamiento y en la prevención durante los embarazos de riesgo y ha cambiado el pronóstico de esta patología. Exponemos el caso de una recién nacida que presentó falla hepática precoz, con características clínicas y analíticas compatibles con enfermedad hepática gestacional aloinmune. Se realizó una exanguinotransfusión y se administró tratamiento con gammaglobulinas, con buena evolución posterior de la paciente.
Palabras clave: hemocromatosis, enfermedad hepática neonatal, hepatitis congénita aloinmune, fallo hepático.
ABSTRACTGestational alloimmune liver disease, previously known as neonatal hemochromatosis, is characterized by severe liver disease in neonatal period, associated with intra and extrahepatic iron accumulation. It is postulated an alloimmune origin, which has opened new opportunities in the treatment and prevention during risk pregnancies, changing the prognosis of this pathology. We report the case of a newborn that presents early liver failure, with clinical and analytical features compatible with gestational alloimmune liver disease. Exchange transfusion was made and gamma globulins were given, with good clinical evolution.
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