title: Early graft hemodynamics in living related liver transplantation evaluated by Doppler ultrasonography.
abstract: The aim of this study was to clarify the perioperative hemodynamics of liver grafts without vascular complications during and early after liver transplantation from living donors. This study was carried out in 4 child recipients (lateral segment left lobe grafts) and 6 adult recipients (right lobe grafts) of liver transplantation from living donors. The hemodynamics of the hepatic artery, portal vein, and hepatic vein of the grafts during and until 7 days after surgery were studied by Doppler ultrasonography. The maximum flow velocity of the hepatic artery, mean portal blood flow velocity, and pulsatility index (PI) of the hepatic artery increased in all 10 grafts with no vascular complication after vascular anastomosis. After surgery, the mean portal blood flow velocity showed a peak 3 days after surgery and reached a nadir 7 days after surgery in both the lateral segment left lobe grafts in children and the right lobe grafts in adults, but it was significantly higher in the right lobe grafts in adults (mean +/- SD 31.0 +/- 6.3 vs. 22.4 +/- 0.9 cm/sec). Also, as the hepatic artery blood flow velocity increased the portal blood flow velocity decreased, the hepatic blood flow during liver regeneration was suggested to be controlled by both the artery and portal vein. The range of PI of the hepatic artery was 0.60-1.86. The mean hepatic venous blood flow was stable throughout the observation period (30.4 +/- 8.8 cm/sec). Although the hepatic venous flow waves changed widely from pulsed waves to a flat flow, its changes did not suggest a vascular complication. Evaluation of changes by Doppler ultrasonography in the hemodynamics of the liver grafts without vascular complications during and early after liver transplantation from living donors is considered to be useful for accurate monitoring of the hemodynamics during liver regeneration and early detection of abnormalities.
authors.affiliation: First Department of Internal Medicine, Mie University School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Nakanishi
authors.forename: Katsuya
authors.initials: K
authors.lastname: Shiraki
authors.forename: Kouji
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Saitou
authors.forename: Shigeru
authors.initials: S
authors.lastname: Ohmori
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nakano
authors.forename: Shugo
authors.initials: S
authors.lastname: Mizuno
authors.forename: Masami
authors.initials: M
authors.lastname: Tabata
authors.forename: Kentarou
authors.initials: K
authors.lastname: Yamagiwa
authors.forename: Hajime
authors.initials: H
authors.lastname: Yokoi
authors.forename: Shuji
authors.initials: S
authors.lastname: Isaji
authors.forename: Shinji
authors.initials: S
authors.lastname: Uemoto
mesh_terms: D000328:Adult; D002675:Child, Preschool; D005260:Female; D006085:Graft Survival; D006439:Hemodynamics; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D008099:Liver / Q000000981:diagnostic imaging* / Q000473:pathology; D017093:Liver Failure / Q000628:therapy; D008115:Liver Regeneration; D016031:Liver Transplantation / Q000379:methods*; D019520:Living Donors; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000473:pathology; D013997:Time Factors; D018608:Ultrasonography, Doppler