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 norm al

objects population. Students of faculty of medicine in Al Rabat University

(ages between 16 22 yrs , 48 % M; 52% F) F),a nd 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. The m ethods 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 th e 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

sca n 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 ran ge 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]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 packa ge

[SPSS] version , 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 rela tion 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 thre

e 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.