Li Dongshan raised his head and glanced at Lu Cheng, then put down the electric knife in his hand.

The knives of surgical instruments can be roughly divided into four categories: round knives for skin incision, sharp knives for subcutaneous incision, blunt muscle layer separation, electrosurgery for hemostasis, and plasma knives for fine details and internal organs.

He said in his heart: Xiao Lu, I know what you mean. The principle of debridement surgery is to use a sharp knife instead of an electric knife, because the electric knife has a hemostatic effect and cannot see the blood supply, but for a large area of ​​necrotic tissue like this

, it’s actually the same thing when you scratch it with a sharp knife.

On the contrary, because the sharp knife is not as dry as the electric knife, the cutting edge will become sticky.

But Lu Chengdu brought it up, and he was his proud student. Especially when he said this, "Master", Li Dongshan felt very happy. Listening to Lu Cheng would not hinder anything. At most, it would only increase the operation time.

The traveling nurse and Wang Linfeng quickly handed the sharp knife to the stage.

Then Li Dongshan prepared to draw large pieces.

Lu Chengxin said that this was not possible. Lu Cheng had just used the dexterous touch he had just obtained before and felt that although the patient's quadriceps muscles appeared to have large areas of necrosis, in fact there were still parts of them with blood supply.

However, the pulsation of blood vessels is very weak. Although the outer muscles have become necrotic, the muscle fibers inside are still beating. It is best to keep these muscle fibers.

Lu Cheng silently used tweezers to twist up the necrotic muscle layer, thus blocking Li Dongshan's path.

Li Dongshan still didn't say anything more, he just cut open the necrotic muscle that Lu Cheng had twisted up, and cut a lot of it into one long strip. The inside was a piece of fish-white flesh, and he was so dead that even gods would be hard-pressed to save him.

Then Lu Cheng suggested: "Master, why don't you put an injection needle on it and try to find a blood supply? The patient already has a lot of necrotic tissue, so it would be better if you can keep a little more."

Whether there is a blood supply, the most direct way is to use a needle to prick it. However, it is probably a bit difficult to prick the patient to bleed.

The reason why necrosis occurs is because bacterial infiltration eats up blood vessels or bacteria blocks them, causing necrosis of distant muscles, or the bacterial microenvironment causes blood supply disorders.

"Then take the next one." Li Dongshan shouted, after all, a dead horse is a living horse doctor.

Wang Linfeng breathed a sigh of relief. He was also afraid that Li Dongshan would take immediate action when he was angry, but it seemed that this young man brought by Li Dongshan could persuade him.

Then he gave the syringe needle to Lu Cheng.

Lu Cheng thought for a moment, adjusted the angle of the syringe slightly, and inserted it into it.

After the needle was inserted for a full two centimeters, blood came out from the needle hole.

At that time, Li Dongshan's pupils shrank, so I pinched myself and said, "Oh my god, he really has blood. Fortunately, I didn't cut a third of it directly. Otherwise, I might have cut all the good tissue."

When Wang Linfeng and She Min saw this scene, they were immediately overjoyed. There were still living tissues, which was a good thing. The more muscles left behind, the more muscles could be restored through exercise later. In this way, this time the cleansing was successful.

The damage is more limited.

Lu Cheng also laughed and said, "Master, you're lucky. There is a blood supply when the needle is inserted so close."

"Then I'll shave about another centimeter." Li Dongshan also nodded.

I just think that when it comes to surgery, it’s better to follow the principles as much as possible. Based on complete experience, sometimes there will be some small mistakes. In fact, if he cuts a third, he will also find the blood supply, at least that’s what Li Dongshan thinks.

Lu Cheng called for the syringe needle for a reason. First, he had a dexterous touch and knew that the slight trembling of the blood vessels and muscles there meant that he was not dead.

Secondly, he has glasses that can directly observe blood vessels. In this way, if others poke the place that cannot bleed, he can directly stick it into the blood vessel. There is no way it will not bleed, right?

Li Dongshan quickly cut open one-third of the muscle, which was still fish-colored. Only the spot where Lu Cheng punctured had a small amount of blood leaking out. Seeing this, Li Dongshan frowned again.

Could it be that there is only such a small blood vessel?

Then Li Dongshan took the syringe needle into his hand and pricked it again.

He also had to make sure once again that he could not lose the big for the small. If it was just a localized blood supply, then it should still be cut.

One centimeter!

No blood.

Two centimeters.

Still no blood.

At this moment, Li Dongshan's face darkened again and he said: "Oh, it seems that he still has no luck."

Lu Cheng then said again: "That's not right. I just tried it just now. It should be there. Master, can I try again?"

Lu Cheng had an attitude of asking for advice humbly, and a little bit of an attitude of "I'll correct my mistakes if I make them."

So Lu Cheng changed the angle from Li Dongshan's position on the same plane.

After a slight swipe, a small amount of blood came out before it went very far.

Prick it again and it comes out again.

Lu Chengcheng raised his head and looked at Li Dongshan, meaning, there is blood.

His face was blank.

Li Dongshan's expression changed immediately.

Although Lu Cheng didn't say anything, Li Dongshan really understood. Lu Cheng's thing didn't know what was going on. It penetrated into the capillaries every time. That's why it caused blood, and he might still be able to feel it.

to the pulsation of blood vessels.

Li Dongshan is a trauma surgeon, so he knows a little bit about it. Some people are specially trained for trauma surgery. They have extremely sensitive touch and can feel the subtle pulsation of blood vessels.

Lu Chengcheng is such a person, I have made a lot of money!!

Li Dongshan was stirred up in his heart, but he remained expressionless: "Well, then it can be preserved. As long as there is a little blood supply, the muscles can be preserved. Antibiotics can also enter the muscle tissue through the arteries and kill the remaining germs.

.”

"Xiao Lu, you feel good today. You can continue to look for blood, and I will be responsible for the debridement."

Lu Cheng said hello.

Wang Linfeng and She Min breathed a sigh of relief and secretly thought it was okay, okay.

People in the audience who watched Li Dongshan teach surgery also thought, well, okay, okay, good luck.

But Fang Nixin was stupid at that time.

This is not a matter of luck or luck. Haven't you ever thought about why Li Dongshan didn't pierce blood, but Lu Cheng did?

Is this okay?

Then Fang Nixin saw that every time Lu Cheng looked for blood luck, he would hit the right mark every time, and still act there and say: "Master, the blood traffic of this muscle is still there."

"This one is the same."

Fang Nixin let go of the retractor midway, feeling completely unable to rest.

Lu Cheng, you have a problem, and your problem is widespread. You hide it too deeply.

Fang Nixin was so shocked that she let go of the retractor, and She Min immediately took it. He only thought that Fang Nixin was a girl. After all, girls have poor physical strength, which is understandable!

If Fang Nixin knew this, she would probably want She Min to know how powerful her anti-wolf skills are: the level and strength of a black belt in Taekwondo!

There were not many people attending this surgery, but there were many people watching.

Li Dongshan is the chief surgeon, Lu Cheng is now the first assistant, and Fang Nixin is the second assistant. Then there are Wang Linfeng and She Min who are the third and fourth assistants, but at this moment, Fang Nixin’s second assistant position has been given to She Min.

Taken over.

After Fang Nixin saw Lu Cheng pricking out the bleeding points of the quadriceps muscles from different angles, she slowly recovered, then vacated the position a little, and gave up the position to

She Min.

Changing the position of the assistant during the operation would have affected the progress of the operation. Fang Nixin's previous letting go was originally caused by her being a little distracted, so changing it again was not suitable.

She went to the fourth assistant's position where She Min was standing before, and then looked at the operations of Lu Cheng and Li Dongshan, and her thoughts became even more detailed.

Fang Nixin was also hit hard this time.

Before, when Li Dongshan took her with Cao Xiaohe, Cao Xiaohe was the soy sauce type, but today it was her. Now Fang Nixin seems to understand a little bit how Cao Xiaohe usually feels, then

It's really not good to feel ignored and beaten down.

However, the gap between her usual height and Cao Xiaohe seems to be no bigger than the gap between the height where Lu Cheng is standing now and the height where she, Lu Nixin, is now.

Fang Nixin wondered if Lu Cheng had to dissect hundreds or thousands of people before he could find the nutritional blood vessels inside the muscles and figure out their shape. Otherwise, it would be impossible to be so accurate.

Fang Nixin's suspicions were of course a bit exaggerated, but the overall results were even more incomparable. Lu Cheng had top-level anatomy experience and a spiritual touch. He only needed to know the general shape of the nutritional blood vessels and cooperate with visualization.

blood flow.

More accurate than more anatomical experience.

You must know that the anatomical structure of the human body can only be used as a reference in any operation, and everyone has certain variability. However, the cooperation of Lu Cheng's three major skills is real-time and more effective than any anatomical experience.

"Master, cut a little more here. I think the outer layer may still be necrotic, so there is no need to keep it." Lu Cheng suggested again.

Li Dongshan's whole body was numb, but he still followed Lu Cheng's suggestion and scraped off the necrotic muscle tissue bit by bit. His technique was extremely exquisite and steady, and there was absolutely no more or less.

The reason why Li Dongshan was numb was because he couldn't see any trace of blood during the operation to remove the necrotic muscles.

What does this mean? It means that Lu Cheng has really touched the pulsation of blood vessels, so he can judge where there are nutritional blood vessels and where there are not, so that he can make accurate 'suggestions'.

In fact, it is a command.

Li Dongshan immediately swung his sword and cut off the place where Lu Cheng said.

Looking at Li Dongshan's sword skills, Lu Cheng was also particularly envious.

I'm kidding, this is surgery, not buying melons at the market. I'll tell you how many millimeters or centimeters to cut, and you just cut it for me. It doesn't matter if it's more or less?
To be continued...