Although uterus transplantation is still in the experimental stage, it has promising potential as a treatment for women with absolute uterine factor infertility based on the childbirths from living donor trials conducted in Sweden and the United States. We report the main characteristics and perioperative and postoperative courses of both recipients and donors following 4 deceased donor and 5 living donor uterus transplantations. Three main priorities differentiate this study from the previously reported uterus transplantations. First, clinical experience with the largest worldwide group of deceased donor uterine transplants is described. Second, in the majority of living donor uterine recipients, only 2 ovarian veins were used for venous blood outflow. All of these recipient procedures were surgically successful, and follow-up posttransplant ultrasound examinations revealed normal uterine blood supply and outflow. Third, in only one living and one deceased donor recipient, the transplanted uterus relied on only 2 uterine veins for venous outflow with a 50% surgical success rate. In all other recipients, 2 uterine and 2 ovarian veins were utilized. Although a successful pregnancy has not yet been achieved, the presented surgical and functional results of our trial are promising.
The geometric shape of the distal anastomosis in an infrainguinal bypass has an influence on its durability. In this article, we compared three different angles of the anastomosis with regard to the hemodynamics. Three experimental models of the distal infrainguinal anastomosis with angles of 25°, 45°, and 60° respectively were constructed according to the similarity theory to assess flow in the anastomoses using particle image velocimetry and computational fluid dynamics. In the toe, heel, and floor of the anastomosis that correspond to the locations worst affected by intimal hyperplasia, adverse blood flow and wall shear stress were observed in the 45° and 60° models. In the 25° model, laminar blood flow was apparent more peripherally from the anastomosis. In conclusions, decreasing the distal anastomosis angle in a femoropopliteal bypass results in more favorable hemodynamics including the flow pattern and wall shear stress in locations susceptible to intimal hyperplasia.
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