RESULTS OF THERMAL VISION EXAMINATION BEFORE AND AFTER ORTHOTOPIC LIVER TRANSPLANTATION IN INBRED RATS

Abstract

This article describes the using of thermal imaging examination in orthotopic liver transplantation in inbred rats. For the experiment, 40 inbred rats of the Vistar line were selected: 20 females, weighing 400–550 g, 20 males, weighing 600–750 g, about a year old. For comparison, we identified the control group, which underwent only an incision of the skin and muscles of the abdominal wall, and then closed the surgical wound, experimental group No. 1, in which the left lateral lobe of the liver was excluded from the bloodstream to create a model of graft ischemia, and experimental group No. 2 who underwent orthotopic transplantation. All manipulations were performed under anesthesia, in compliance with the rules of asepsis and antisepsis. Thermal imaging examination was carried out with a medical thermal imager model ULIRvision Ti120 before the operation, then on the first, third, fifth, seventh day after. When comparing the thermograms of rats from the experimental group No. 2 and the control group, differences were observed on the 3rd day after the operation, then the temperature in the graft area in the experimental group No. 2 was higher than the temperature of the same skin area in the control group. This may be due to a slight ischemia of the graft during its disconnection from the blood flow, as well as to surgical intervention. After conducting research, we came to the conclusion that on the 3rd day in the transplant area there is a local increase in temperature, which is associated with ischemia of the organ due to temporary blockage of blood vessels, which occurs from the moment of explantation of the liver until its subsequent connection to the bloodstream. Rats in which this process affects 33% of the liver die on the first day from developing fulminant sepsis.