Splenic Artery Group Research Articles

Splenic artery transposition for hepatic arterial supply in living donor liver transplantation.

To determine the safety and outcome of splenic artery(SA) transposition in extra-anatomic hepatic arterial reconstruction (HAR) in living donor liver transplantation(LDLT). We retrospectively compared the outcome of the ten liver recipients who underwent HAR with the transposed splenic artery (SA group) with a matched cohort of 40 recipients who underwent HAR with the standard hepatic artery (HA group) between March, 2019 and December, 2020 at liver transplantation department, Pir Abdul Qadir Shah Jeelani Institute of Medical Sciences, Pakistan. The comparison of recipients' and donor demographics, operative and graft characteristics, post-operative labs, Doppler ultrasound(USG) findings, and complications, along with 30-day mortality, and 1-year survival were reported for both groups. The mean age of patients in the SA group was 42.80±7.510 and in the HA group was 43.73±8.171 years. The common indication of LDLT was viral hepatitis in both groups. The operative duration was longer in the SA group (597.50±41.3156 min) than in the HA group (530.75±66.502 min) with a significant p-value= 0.004. Similarly, blood loss was also more in the SA group (1635±226.139 ml) than in the HA group (1477.50±270.316 ml) (p-value= 0.096). The incidence of biliary and vascular complications, early allograft dysfunction, acute cellular rejection, 30-day mortality, and 1-year survival were comparable in both groups. Post-operatively splenectomy was not needed in any SA group recipients. The SA is easily approachable, suitable, and safe for HAR in the difficult situation of hepatic arterial flow inadequacy during LDLT due to its appropriate length, and good blood flow.

Analysis of respiration-related movement of upper abdominal arteries: preliminary measurement for the development of a respiratory motion compensation technique of roadmap navigation

In this study, we analyzed the respiratory motion of the upper abdominal arteries preliminary to developing a method of respiratory motion correction for the roadmap technique used in vascular interventions. We retrospectively obtained six digital angiography sequences taken during respiration. The levels of the right and left hemidiaphragms and the positions of artery bifurcation points were measured manually through each sequence. Artery bifurcation points were classified as the hepatic artery group (HAG), splenic artery group (SAG), and celiac group (CG). Correlations between the motions of each hemidiaphragm and of the artery bifurcation points in each group were determined. We found that the vertical motion of the HAG and CG matched that of the right hemidiaphragm (r = 0.924 and r = 0.888, respectively). The vertical motion of the SAG matched that of the left hemidiaphragm (r = 0.949). The mean horizontal movements for all groups were up to 1.90 mm. The vertical motion for each group matched that of the right or the left hemidiaphragm. These findings will facilitate the development of a method of respiratory motion correction for the roadmap technique.

CT during arterial portography: comparison of injection into the splenic versus superior mesenteric artery.

To determine whether the diagnostic quality of computed tomography (CT) during arterial portography (CTAP) performed via the splenic artery (SA) is better than that performed via the superior mesenteric artery (SMA). The authors evaluated CTAP images obtained in 98 patients from 1991 to 1994; 47 examinations were performed via the SA and 51 were performed via the SMA. Images were reviewed, by consensus, by three radiologists blinded to catheter location. Hepatic enhancement was quantitatively assessed in 53 patients (31 in the SA group, 22 in the SMA group). The numbers of low-attenuation non-tumor-related perfusion defects (19 in the SA group, 17 in the SMA group), high-attenuation non-tumor-related perfusion defects (six in the SA group, six in the SMA group), diffuse mottled perfusion abnormalities (six in the SA group, five in the SMA group), and portal venous flow defects (20 in the SA group, 20 in the SMA group) were similar in both groups (P > .05). Peak hepatic enhancement was similar in both groups (SMA group = 111 HU; SA group = 112 HU) (P > .05). There is no difference in quality between CTAP performed via the SA versus CTAP performed via the SMA.