Evaluation of the Hepatic Vessels among Sudanese Liver Transplants using Doppler Ultrasonography

Abstract

This study conducted tocharacterize and evaluate the hepatic vessels among Sudanese liver transplants using Doppler ultrasonography. The data was collected from three hundred expected normal student of faculty of medicine in Al Rabat University during the period from 1st April 2016 to 30th July 2017, and it is analyzed using the Statistical Package for Social Science – SPSS version 20.0. Population & Sample size: the data collected from 300 normal objects population. Students of faculty of medicine in Al Rabat University (ages between 16-22 yrs, 48 % M; 52% F),and only 45 out of only 65 patients in Sudan with transplanted liver, 9 of them was children (ages between 1.5 - 65 yrs.), 76 % M; 24 % F, has been tested and enter the study. Themethods of data collection includes the data sheet to collect the data, and performing an ultrasound scan. This is done using both transverse and longitudinal ultrasound techniques plus coronal oblique; putting the transducer in four main points the so called 1- the mid-line, 2- the mid clavicular line, 3- the anterior and 4- the mid axillary lines all are intercostally line that made a perpendicular imaginary line from the xiphisternum. In addition, sub costal scan done in the same points. The main result includes the portal vein [PV] in the normal native livers found to be [hepatopetal; diameter less than 13 mm; velocity less than 20 cm/s. In transplanted livers [hepatopetal; diameter less than 20 mm; velocity range 20 - 55 cm/s], see chapter four, representation and tabulation. The Splenic length in recent liver transplantation was found to be enlarged and start to decrease with time. The hepatic artery [HA] resistive index in both (native & grafts) ranges between 0.55-0.75 with transplants near the upper limit [0.60 - 0.77]. Hepatic veins [HVs} in both are triphasic in character. The common bile duct diameter found less than 6 mm in native livers, less than 4 mm in transplants. Statistics & analysis used the package [SPSS] version 20.0. , the tow tests (student t-test and chi square test).In conclusion the PV flow direction & velocity is the most important indicator of healthy liver transplants and the HA resistive index diagnose early rejection. The important relation done between the normal portal vein and the transplanted one [for both an equation is built, see in the discussion chapter 5], that there is a significant relation between the diameter and the velocity. At the end, the study reveals that they are three important indicators of transplanted liver progressing to health. These are the portal vein, the Splenic volume, and the HA resistive index, all of it start high and decrease with time.