Severe hypernatremic dehydration associated with cerebral venous and aortic thrombosis in the neonatal period.

Severe neonatal hypernatremia is an important electrolyte disorder that has serious effects. Cerebral venous thrombosis and aortic thrombosis are relatively rare in severe neonatal hypernatremic dehydration. The authors report a case of cerebral venous thrombosis, associated with aortic thrombosis revealed by dehydration in a 9-day-old boy. Diagnostic was performed using Doppler ultrasound and imaging techniques. Thrombosis was resolved after anticoagulation treatment with low-molecular weight heparin for 1 month, and then was substituted by oral anticoagulant. The case report is followed by a review of the literature dealing with clinical, aetiological and therapeutic aspects of neonatal thrombosis.