The group of people saw that it was unusual for her to remain silent on such a common question, and the outgoing people all felt that something was fishy and looked at the outgoing people.
Cao Yong pretended to be nonchalant and said to his junior brother: "Okay, stop teasing others."
Huang Zhilei cried out in his heart that he was wronged: Whoever teased the junior sister was definitely not him but Senior Brother Cao yourself.
Went to the operating room and the anesthesia was done.
This time the chief surgeon was Dr. Song, and classmate Pan was the assistant.
I have talked about scalp issues before. The scalp structure is divided into four layers.
The first layer of skin has richer blood supply than the skin in other parts of the human body, so once blood is lost, it is easy to suffer from hemorrhagic shock.
The second layer of subcutaneous tissue is also called the superficial fascial layer. There are relatively large blood vessels and nerves here. At that time, Xie used acupressure to stop the bleeding and pressed on the blood vessel network in this area.
The three-layer galea aponeurosis layer is a special structure of the scalp. It is strong, elastic and full of tension. It connects muscles in the front and connects the temporalis muscle in the front and the occipital muscle in the back.
The location of the hydrocephalus drainage tube we talked about before is hidden below this layer, that is, the sub-aponeurotic layer of the fourth layer. This layer of structure is loose, so it is easy to separate the skin bag and place the shunt tube, and the upper layer of the structure is thick enough to cover it.
Prevent the shunt tube from being exposed.
There is a subaponeurotic space under the subaponeurotic layer. The range of this layer can reach from behind the supraorbital rim to the upper nuchal line. The structure is very thin and easy to tear. Therefore, most patients with scalp avulsion injuries are torn along this layer.
And we can see that many injured people have tears above their eyes and ears because of this reason.
Needless to say, the final periosteum layer is the thin membrane covering the skull.
As can be seen from the above structure, the detached scalp of patients with scalp avulsion injuries contains the superficial fascia layer. This layer covers the important arteriovenous and vascular networks and nerves that nourish the scalp. These arteriovenous and vascular networks and nerves are necessary to communicate with the scalp.
The large arteries, veins and nerve trunks of the human body are connected together, otherwise the scalp will die.
It can be said that if the scalp of patients with scalp avulsion injuries needs to be transplanted back, anastomosis of these important nerves and blood vessels is the focus of the entire scalp transplant surgery for patients with scalp avulsion injuries.
The medical students at the scene immediately racked their brains to recall in detail the scalp anatomy taught in the anatomy class.
Speaking of which, the scalp is not the top priority in anatomy classes. Without seeing real clinical surgical cases, it would be difficult to recall the content of the anatomy class. This is a big reason.
Secondly, the dissection of dead specimens in the anatomy class has a relatively clean image. Unlike today's patients, when the gauze protecting the wound is removed, the wound surface must be full of blood because it is alive and fresh, filling the doctor's field of vision.
It was a mess of blood and flesh, and looked almost a complete mess.
Don't say that medical students will be confused when they look at and try to find the location of each blood vessel and nerve. When the teacher wants to find the anastomosis point, he also painstakingly aligns it there and marks it one by one. He is afraid of making a mistake. Once
Getting it wrong can have disastrous consequences.
Once again, it has been verified that surgical anatomy is the foundation of foundations. A doctor who is good at dissection will not sweat profusely at least in this early stage of alignment work. A doctor who is not good at anatomy may need more time just to find the correct position.
It takes more than hours.
It is normal for a scalp transplant surgery to last all night for scalp avulsion injuries. Unexpectedly, it is just a scalp surgery, but it is not as relaxing as intracranial surgery.