That is wonderfully finished the story, I like the way your described the operation, and medical terminology, the investigations that usually used during operation and you incorporated them very well as it would be done with the help of professionals. It gives me an impression that you have medical background or anyhow was involved in medicine that helped you so nicely describe everything and made it really impressive and exciting story :)
He's been brilliant. How many times we read something new around the vampire's theme? :-)