Of 60 neonates who survived extracorporeal membrane oxygenation (ECMO)
in our institution between June 1992 and March 1994, seven had either
complete or partial superior vena cava (SVC) obstruction, When the pa
tients with SVC obstruction were compared with those who had an echoca
rdiogram after ECMO, no predisposing factors for the development of SV
C thrombus could be found, Our data show that SVC thrombus may be a si
gnificant complication after ECMO.