Hepatic artery reconstruction in living donor liver transplantation using surgical loupes: Achieving low rate of hepatic arterial thrombosis in 741 consecutive recipients-tips and tricks to overcome the poor hepatic arterial flow

Technique of Hepatic Artery Anastomosis in Living Donor Liver Transplantation: Review of Its Results in Over 1200 Adult and Pediatric Transplants

BACKGROUND

Failure to achieve a good arterial inflow to the graft in living donor liver transplantation (LDLT) has disastrous consequences to the graft and patient survival. Standard microvascular techniques of hepatic artery (HA) anastomosis used in deceased donor liver transplantation are not applicable in LDLT. We present the results of our unique Backwall-first technique of HA anastomosis in both adult and pediatric LDLT.

PATIENTS AND METHODS

Retrospective review of all consecutive patients who underwent LDLT from January 2010 to December 2020 was performed from our prospective database. Data with regard to early postoperative (90-day) hepatic arterial complications were analyzed.

RESULTS

A total of 1276 LDLTs (876 adults, 400 children) were performed during the study period. In the 90-day postoperative period, HA anastomotic complications [thrombosis in 11 (0.9%); pseudoaneurysm in 3 (0.2%)] were observed in 14 recipients (1.1%) including 8 adults (0.9%) and 6 children (1.5%). Eight of these 14 recipients (0.6%) including 4 adults (0.5%) and 4 children (1%) had standard HA reconstruction. The remaining six (0.5%) including 4 adults and 2 children had complex arterial reconstruction with interposition graft and/or alternative arterial inflow.

CONCLUSION

The Backwall-first technique of HA reconstruction described in this study achieved a very low HA complication rate in LDLT.

Analysis of Hepatic Arterial Reconstruction Technique Using Surgical Loupes for Living-Donor Liver Transplantation: Results From a Single Center

BACKGROUND

The reconstruction of the hepatic artery (HA) is the most complex step in living-donor liver transplantation (LDLT) owing to the artery's smaller diameter and the increased risk for HA-related complications. In this study, we presented our HA anastomosis technique for LDLT, which employed interrupted sutures using magnifying loupes.

MATERIALS AND METHODS

Since January 2019, we retrospectively analyzed 179 LDLTs that were performed at our center. HA anastomosis was performed under a loupes magnifier (2.5 or 4.5 × ) by the same surgeon.

RESULTS

There were 65 female and 114 male recipients with a mean age of 41.6 ± 21.6 years. Of the recipients, 34 were children. HA thrombosis (HAT) was seen in 3 recipients (1.67%; 1 child and 2 adults) in this series. HAT occurred on the third, sixth, and seventh days after LDLT. HAT was successfully treated with interventional radiologic technique. All recipients are still alive with a patent HA.

CONCLUSION

The use of magnifying surgical loupes and interrupted sutures to perform HA reconstruction is safe, feasible, and yields a low rate of HAT. Also, endovascular treatment can be used safely for treatment of HAT within the first week after LDLT with a high success rate and is not associated with major complications.

Revascularization of iatrogenic intraoperative injury to a major artery during hepatobiliary-pancreatic surgery: a single-center experience in China

BACKGROUND

Although uncommon during hepatobiliary-pancreatic (HBP) surgery, iatrogenic intraoperative injury to a major artery requires prompt and appropriate repair. Here, we outline our surgical experience with the repair of this injury and compare our experience to findings garnered from a selective review of the literature.

METHODS

We retrospectively analyzed the clinical diagnoses, surgical methods, sites of arterial injury, operative repair, intra-operative blood loss, blood transfusion requirements, postoperative management and outcome of 17 consecutive patients who sustained iatrogenic intra-operative injuries to major arteries during HBP surgery between January 2008 and December 2013.

RESULTS

Depending on the location and extent of injury, suture repair, primary end-to-end anastomosis, artery transposition, interposition grafting, or arterio-portal shunting were used. Postoperative morbidity occurred in three cases and there was only one case of in-hospital mortality (5.9%). No arterial thrombosis or other repair-related complications were found after the operation with a follow-up duration of 6 months.

CONCLUSIONS

The use of an optimal repair method for injured arteries based on their location and extent resulted in a satisfactory outcome.

Impact of middle hepatic artery reconstruction after living donor liver transplantation using the left lobe

INTRODUCTION

The aim of this study was to clarify the impact of middle hepatic artery reconstruction on the outcomes of duct-to-duct biliary anastomosis after living donor liver transplantation (LDLT) using the left lobe.

MATERIALS AND METHODS

Among 258 patients who underwent LDLT using the left lobe, 216 patients who underwent hepatic artery reconstruction and one hepatic duct reconstruction with duct-to-duct interrupted anastomosis were divided into three groups: Group A (n = 123), one arterial stump with left hepatic artery reconstruction; Group B (n = 32), two arterial stumps with only left hepatic artery reconstruction; and Group C (n = 61), two arterial stumps with reconstruction of the left and middle hepatic arteries. The outcomes after LDLT were compared among the three groups.

RESULTS

No hepatic artery complications occurred. Group B had a significantly greater incidence of anastomotic biliary stricture than Group C. A multivariate analysis with Cox regression revealed that being in Group B was the only significant independent risk factor for postoperative anastomotic biliary stricture after LDLT.

CONCLUSIONS

Middle and left hepatic artery reconstruction is safe in LDLT and may prevent biliary stricture caused by dual hepatic artery reconstruction when the graft has left and middle hepatic artery stumps.

Risk factors of hepatic artery thrombosis in pediatric deceased donor liver transplantation

PURPOSE

Hepatic artery thrombosis (HAT) remains a life-threatening complication in liver transplantation. We aim to investigate the risk factors of HAT in deceased donor pediatric liver transplantation.

METHODS

104 recipients from 2014 to 2016 were enrolled; donor and recipient characteristics, surgical variables, graft and recipient survival rate were compared between recipients with or without HAT. Univariate and multivariate analysis were applied to identify the risk factors of HAT.

RESULTS

The recipient survival rate was 87.0% and 96.3% at 1 year, and 87.0% and 96.3% at 3 years in HAT and non-HAT groups without significant difference. The graft survival rate was 73.9% and 96.3% at 1 year, and 73.9% and 95.1% at 3 years in HAT and non-HAT groups; significant difference was observed between two groups at both 1 and 3 years. Donor age less than 8.5 months, graft weight less than 190 g and GRWR less than 2.2% were identified as independent risk factors for HAT. Recipients with HAT were associated with higher incidence of post-operative biliary complications.

CONCLUSIONS

Young donor age and small liver graft are risk factors for HAT in deceased donor pediatric liver transplantation.

Adult-to-adult living-donor liver transplantation: The experience of the Université catholique de Louvain

BACKGROUND

Liver transplantation is the treatment for end-stage liver diseases and well-selected malignancies. The allograft shortage may be alleviated with living donation. The initial UCLouvain experience of adult living-donor liver transplantation (LDLT) is presented.

METHODS

A retrospective analysis of 64 adult-to-adult LDLTs performed at our institution between 1998 and 2016 was conducted. The median age of 29 (45.3%) females and 35 (54.7%) males was 50.2 years (interquartile range, IQR 32.9-57.5). Twenty-two (34.4%) recipients had no portal hypertension. Three (4.7%) patients had a benign and 33 (51.6%) a malignant tumor [19 (29.7%) hepatocellular cancer, 11 (17.2%) secondary cancer and one (1.6%) each hemangioendothelioma, hepatoblastoma and embryonal liver sarcoma]. Median donor and recipient follow-ups were 93 months (IQR 41-159) and 39 months (22-91), respectively.

RESULTS

Right and left hemi-livers were implanted in 39 (60.9%) and 25 (39.1%) cases, respectively. Median weights of right- and left-liver were 810 g (IQR 730-940) and 454 g (IQR 394-534), respectively. Graft-to-recipient weight ratios (GRWRs) were 1.17% (right, IQR 0.98%-1.4%) and 0.77% (left, 0.59%-0.95%). One- and five-year patient survivals were 85% and 71% (right) vs. 84% and 58% (left), respectively. One- and five-year graft survivals were 74% and 61% (right) vs. 76% and 53% (left), respectively. The patient and graft survival of right and left grafts and of very small (<0.6%), small (0.6%-0.79%) and large (≥0.8%) GRWR were similar. Survival of very small grafts was 86% and 86% at 3- and 12-month. No donor died while five (7.8%) developed a Clavien-Dindo complication IIIa, IIIb or IV. Recipient morbidity consisted mainly of biliary and vascular complications; three (4.7%) recipients developed a small-for-size syndrome according to the Kyushu criteria.

CONCLUSIONS

Adult-to-adult LDLT is a demanding procedure that widens therapeutic possibilities of many hepatobiliary diseases. The donor procedure can be done safely with low morbidity. The recipient operation carries a major morbidity indicating an important learning curve. Shifting the risk from the donor to the recipient, by moving from the larger right-liver to the smaller left-liver grafts, should be further explored as this policy makes donor hepatectomy safer and may stimulate the development of transplant oncology.