Risk factors for portal vein complications in pediatric living donor liver transplantation.
BACKGROUND
Portal vein (PV) complications in pediatric living donor liver transplantation (LDLT) are often asymptomatic in the early stages after transplantation and can be serious enough to lead to graft failure. There have been few reports on risk factors for PV complications in LDLT. The aim of this study is to investigate the influence of hepatic inflow upon PV complications and to predict patients at risk for these complications.


METHODS
From 1997 to 2008, 46 pediatric patients underwent LDLT at our center. Portal venous and hepatic arterial flows and PV diameter were analyzed.


RESULTS
PV complications were identified in seven patients (15.2%) and occurred at a younger age and lower weight. As a result of appropriate treatment, none of the patients suffered graft failure. Analysis of the 46 patients and 27 patients under two yr of age identified smaller PV diameter in recipient and larger discrepancy of PV diameter as risk factors. Portal venous flow tended to be low, in contrast to hepatic arterial flow, which tended to be high.


CONCLUSIONS
PV size strongly influences PV complications. Other factors such as younger age, low portal venous flow, and high hepatic arterial flow may be risk factors for PV complications.
Shibasaki
Susumu
S
Department of General Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
Taniguchi
Masahiko
M
Shimamura
Tsuyoshi
T
Suzuki
Tomomi
T
Yamashita
Kenichiro
K
Wakayama
Kenji
K
Hirokata
Gentaro
G
Ohta
Minoru
M
Kamiyama
Toshiya
T
Matsushita
Michiaki
M
Furukawa
Hiroyuki
H
Todo
Satoru
S
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D005260:Female; D006084:Graft Rejection / Q000175:diagnosis; D006801:Humans; D017093:Liver Failure / Q000628:therapy*; D016031:Liver Transplantation; D019520:Living Donors; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000473:pathology*; D011183:Postoperative Complications; D011446:Prospective Studies; D012307:Risk Factors; D015996:Survival Rate; D016896:Treatment Outcome; D055815:Young Adult