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Maternal hypoxaemia in early pregnancy causes similar fetal circulatory responses to those in late pregnancy: bradycardia, reduced venous flow velocities, augmented pulsatility in veins and a redistributional flow velocity pattern of the umbilical and common carotid arteries.

Pyoderma gangrenosum (PG) is a painful, ulcerating neutrophilic dermatosis commonly associated with a variety of underlying systemic conditions. We report a child with neurofibromatosis-1 (NF-1) and an aseptic splenic abscess who developed multifocal PG in areas of iatrogenic skin trauma. There is no clinical evidence or theoretical basis to suggest a causal relationship between NF-1 and PG. Systemic corticosteroid and cyclosporine therapy led to complete resolution of the lesions.

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