In utero arterial embolism from renal vein thrombosis with successful postnatal thrombolytic therapy.
Thromboembolic events in the pediatric age group occur most commonly in neonates, and newborns of diabetic mothers are particularly at risk. We report a newborn with right renal vein and inferior vena cava thrombosis who apparently embolized across the foramen ovale antenatally with resultant right brachial artery occlusion. The baby was delivered by cesarean section from an insulin-dependent diabetic mother. At the time of birth, there was severe right arm ischemia with absent brachial and radial pulses. There was clinical evidence of distal embolization with a "trash" lesion of the distal right middle finger as well as a midforearm area of full-thickness skin loss. Ultrasound demonstrated a right renal vein thrombosis and a 95% occlusion of the inferior vena cava. Regional urokinase therapy was instituted through a lower extremity vein with a 5,000 U/kg bolus and then 5,000 U/kg/h continuous infusion. Twelve hours of infusion of urokinase led to clinical resolution of the right arm ischemia, with return of pulses. Follow-up ultrasound showed the right renal vein thrombosis and inferior vena cava clot to be completely resolved. The right middle finger and forearm lesions subsequently have healed primarily. We report this as a case of in utero arterial embolization with successful postnatal therapy using regional urokinase infusion.
Department of Surgery, University of California, San Francisco 94143-0510.
B W
BW
Duncan
N S
NS
Adzick
M T
MT
Longaker
J R
JR
Edwards
R M
RM
Nelson
M A
MA
Koerper
D001132:Arm / Q000098:blood supply*; D001916:Brachial Artery; D004617:Embolism / Q000188:drug therapy / Q000209:etiology*; D005315:Fetal Diseases; D006801:Humans; D007231:Infant, Newborn; D007511:Ischemia / Q000188:drug therapy / Q000209:etiology*; D008297:Male; D012082:Renal Veins; D015912:Thrombolytic Therapy; D013927:Thrombosis / Q000150:complications* / Q000188:drug therapy; D014568:Urokinase-Type Plasminogen Activator / Q000627:therapeutic use*; D014682:Vena Cava, Inferior
D014568:Urokinase-Type Plasminogen Activator