Diffuse microvascular disease: Target vessel diameter is less than 1mm, or a long segment is diffusely narrowed, making it difficult to find a suitable anastomosis site. Even using a microscope with 25x magnification, with sutures thinner than a hair, there might still be an issue with anastomosis failure or long-term failure.
When these two factors combine, it is practically a devil's combination for coronary bypass surgery. Doctors need to use no-touch techniques to avoid the aorta and must work with extremely limited graft vessel materials. The graft vessel may only be a single vein, requiring multiple anastomoses to connect a bunch of fragile tiny blood vessels. It's like sewing the thinnest gauze on a rocking boat with the finest thread and only having one chance to get it right.
"How is the overall condition?" Yang Ping asked.
