Abstract
Neonatal aortic thrombosis, though rare, is associated with high mortality and is frequently linked to umbilical vessel catheterization, especially in smaller and critically ill infants due to their low levels of natural anticoagulants and increased prothrombotic activity. We report a case of a term neonate with abdominal aortic thrombosis and severe lower limb ischemia, presenting with respiratory distress requiring intubation and subsequent development of thrombosis by day 7. Initial anticoagulation with heparin proved insufficient, necessitating the use of reteplase and intra-arterial thrombolysis, which resulted in clinical improvement despite limited immediate success in Doppler studies. The patient was discharged on low-molecular-weight heparin against medical advice, highlighting the complexities and need for individualized management strategies in neonatal thromboembolism.
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