Before the operation, Ran Yan checked Liu Qingsong's large box, which usually does not leave his body.

"Ran Yan, this is sheep intestines, I made my own ones." Liu Qingsong carefully took out a long metal box from a wooden ice bucket, and took out another thing wrapped in a silk handkerchief from inside. There are only two sheep intestines, this thing is as thin as a hair, but it is very dry and hard, like a dead branch, but Ran Yan knows that this is an excellent thing, this is a kind of thread that can be absorbed by the human body, suitable for suturing blood vessels and other places that are not easy to remove stitches, and must be stored at low temperature for a long time, otherwise it is very easy to deteriorate.

There are also all kinds of Liu Qingsong's self-prepared wound 'medicine', disinfection 'medicine' water, and almost a full set of scalpels. There's even a magnifying glass!

Ran Yan's eyes were slightly wet, and she felt that Liu Qingsong's existence was very necessary at this moment. With Liu Qingsong, a boring person, making these "boring" things, Ran Yan has a little more confidence.

Even with these things, Liu Qingsong also feels that the success rate of the operation is limited, and an injury like Sang Chen, even in a well-equipped operating room, is not a simple operation, in such an environment, it is a unique challenge for the surgeon, four points rely on strength, and six points depend on luck.

Although he thought so, Liu Qingsong actively cooperated without carelessness. He soaked the sheep intestines in salt water to soften, and then returned to Ran Yan as his deputy.

Because of the limited lighting conditions in the wilderness, all the torches could only be lit and carried by officers and soldiers standing around the huts.

In the middle of the cleaned grass hut, two officers and soldiers supported Sang Chen, and Ran Yan had already cut the robe on his body, 'exposed' his 'naked' upper body, and was taking off the arrow little by little.

At first, every time he moved, Sang Chen snorted in pain, but after a while, he couldn't hear his voice anymore.

Ran Yan looked at the large amount of bleeding, and his voice tightened, "Liu Qingsong, can you test your blood type?" ”

"Yes." Liu Qingsong immediately said that in the more than ten years since he came to Datang, he has not done a single major thing, but has made a bunch of very unreliable inventions, and extracting serum is a rare and successful thing. Because usually, the serum can also be obtained by natural precipitation.

However, one of the most important functions of serum extraction is to identify blood type, and in the absence of Western medicine, people need to know what their blood type is for. Therefore, this technology can only be used as a trick for Liu Qingsong to occasionally deceive the little lady.

"Serum?" Ran Yan had been focusing on the wound, but there was a little joy in his questioning voice.

The serum is only a week under good storage conditions, and it stinks in five or six hours under normal circumstances, if there is a serum temporarily, it must be providential to let Sangchen live.

"No, but I used to read an academic report, and I was able to quickly extract serum, and I have done it many times before, and the chances of success are 'quite high'." Liu Qingsong said, then got up and took out a bottle from the box, hesitated for a moment, and then said· I've cultivated some antivenom myself, but I've never experimented with it......"

One of the most important functions of antivenom is that it can prevent and treat tetanus, which is very needed in Sangchen's situation.

Liu Qingsong had a syringe and needle scavenged from Ran Yan here, and Ran Yan didn't pause, saying, "Let Wanlu disinfect the syringe needle with boiling water." ”

Liu Qingsong didn't have any confidence in the antivenom he made, but he felt that this syringe was made by Sang Chen himself, and maybe it was destined to save his life today, so he didn't say anything anymore and went out to prepare.

The atmosphere in the room was solemn, everyone didn't even consciously breathe slowly, and more than ten pairs of eyes stared at Ran Yan's movements for a moment.

She was wearing a mask, and the sweat on her forehead gathered into drops under the beating firelight, and Ge Lan was constantly wiping it for her.

Ran Yan has not performed live surgery for many years, and only did an internship in the brain department of the hospital during the period when he was about to graduate, and he did not even do the chief surgeon, and he did the chief surgery three years later, but it was only for corpses. But today, Sang Chen's life is in front of her, and there is still room for redemption, even if there is only a 1 in 100,000 chance, she will definitely not give up.

Sang Chen, hold on a little longer...... Ran Yan said secretly.

Without any instruments, Ran Yan could only rely on visual inspection to observe the changes in the wound and Sang Chen's vital signs.

The arrow Chu took it out, Ran Yan turned behind Sang Chen, took a deep breath, held the feather arrow with both hands, and 'pumped' violently.

In an instant, blood splattered, spraying all over Ran Yan's face, but her expression did not change in the slightest, and her voice was flat, "Put him flat." ”

Ran Yan quickly changed into a pair of clean gloves, "No. 4 knife." ”

Liu Qingsong has a relatively complete set of surgical knives in his box, although he usually doesn't have the opportunity to use them, but he carefully disinfects them every day. Each handle and blade is marked with a model number, and it is easy to find Golan.

After Ran Yan pulled out the arrow, he did not stitch it up immediately, but first cut the wound with a scalpel with a holding technique, and cleaned it slightly with a cotton cloth soaked in disinfectant 'medicine'.

"Seven." Ran Yan put down the scalpel in his hand and reached out to take the longer scalpel handed over by Ge Lan.

No. 7 scalpel is a scalpel for deep cutting, Ran Yan knows more about the human body than ordinary doctors, she has dissected almost every part of the human body, and the 'chest' and abdomen are the most common places for forensic medicine, Ran Yan with many years of forensic experience, according to the location of the injury and the amount of bleeding and other factors, judged the location of Sang Chen's injured artery, and slightly cut the skin and muscle 'flesh' tissue along the wound, and soon found the artery in a bloody 'flesh' blur.

"Tweezers." She took the tweezers, held the knife in her right hand and the tweezers in her left hand, quickly and accurately peeled off the blood vessels, and then used silk to temporarily tie the arteries first, so as not to cause shock due to excessive blood.

During this period, she used a measuring cotton cloth to absorb blood, so that the blood vessels could be more clearly exposed.

The artery wasn't completely broken, but the arrow had opened a little as it passed. Fortunately, Ran Yan's judgment was correct, and he first thought of removing the arrow before pulling it out, otherwise this pull, as long as the hand is not checkable, it may cause blood vessels to rupture.

He Si Zhengyi knelt not far away, watching this scene, the sweat on his forehead was more than Ran Yan's, his hands were tightly clenched into fists by the 'legs', his heart was both nervous and surprised, but he didn't dare to approach, because Ran Yan had said before that everyone in the room was not allowed to move casually, because the change of light and shadow would affect her vision.

Only a blur of flesh and blood could be seen in his position, as well as Ran Yan's calm expression.

After doing all this, Ran Yan probed Sang Chen's pulse, and his breathing was gradually declining When Ran Yan clamped the blood vessels, the pulse and bleeding of the heart that he obviously felt was already very weak Ran Yan took a deep breath, took off his gloves, put on a new pair, and took out the soaked soft sheep intestines from the salt water, and Ling Gelan used a magnifying glass to pass through it very easily.

It is best to suture the blood vessels under a microscope, but the conditions are limited, and only a magnifying glass can be used.

Ran Yan's finishing work of dissecting the corpse, generally the sutures only need to look neat in appearance, and there is no need to consider what kind of impact the sutures have on the human body, in this regard, she is not as good as a doctor with many years of surgical experience, but the usual practice of embroidery 'flowers' helps her a lot in this matter, and she can complete the fine stitches of suturing blood vessels relatively easily.

"Keep the lantern close." Ran Yan's voice did not have the slightest emotion, which made the listeners solemn. The soldier didn't need He Sizheng to speak again, and immediately leaned over.

In addition to the torches, there are also four lanterns, which are indispensable for official business at night.

After adjusting the best lighting position, Ran Yan asked Ge Lan to put the magnifying glass above the wound, she used tweezers with one hand to fix the blood vessels, and the other hand with a needle hanging her head to start suturing.

He Si was looking at Ran Yan in the corner, she was embarrassed at the moment, covered in blood, kneeling on the ground, lying down, looking so solemn and reverent, a pair of beautiful eyebrows have been tightly wrinkled and never let go for a moment, but there is only calmness and concentration in her dark eyes.

Ge Lan was also very hard, she couldn't shake the hand holding the magnifying glass on one side, but the other hand had to keep wiping Ran Yan's sweat, so that the sweat could not affect her vision or drip onto the wound.

In the absence of equipment such as oxygen masks, Ran Yan must end the suturing as soon as possible in such a harsh environment.

Fortunately, the wound was not large, and the whole stitch did not last long, but everyone felt that it had been decades and was out of strength. The soldiers with the lanterns stiffened their legs, holding on to prevent their hands from trembling, and their eyes were full of admiration when they looked at Ran Yan at this moment, because she didn't even move the slightest movement when she knelt on the ground from beginning to end.

After suturing the blood vessels, Ran Yan quickly cleaned up the wound, untied the silk that tied the blood vessels, and then began to suture the external wounds. Compared with suturing blood vessels, Ran Yan is really familiar with it.

However, Sang Chen could not have changed in the slightest like a corpse, and as time passed, his signs of life gradually stagnated.

Ran Yan had to stitch up the wound more quickly, and then perform cardiopulmonary resuscitation on him.

These tasks, if they are routine, should be done by assistants, but Liu Qingsong has to deal with the follow-up rescue preparations, he has to take blood tests, 'draw' blood, and find a catheter suitable for blood transfusion, which no one can replace. So right now, Ran Yan can only come by herself.

The blood vessels near Sang Chen's heart had just been sutured, and Ran Yan didn't dare to press hard, so he could only use the form of massage.

There is also a very important artificial respiration. When Ran Yan straightened Sang Chen's head and lowered his head to mouth, the people around him who were already blank didn't know how to react in shock, but stared at this scene with big eyes.

But Ran Yan didn't kiss 'kiss', and after a few clicks, everyone basically saw that she was inhaling air and then passing it to Sang Chen. Even though this is really shocking, no one has ever done this, but isn't Ran Yan's anatomy also a magic technique that only the legendary Zhonghua Tuo can use!

Ran Yan did not stop, doing cardiopulmonary resuscitation massage and artificial respiration over and over again.

This rich Liu Qingsong came in, saw this situation, and hurriedly stepped forward to cooperate with her, with Liu Qingsong doing artificial respiration and Ran Yan doing heart massage.

About two moments later, Ran Yan probed the pulse of Sang Chen's snort, and finally had a faint anti-two The two lasted for another cup of tea, until Sang Chen could regain his own breathing, even though it was very weak, but it was the hope of survival.

"Has the syringe been sterilized?" Ran Yan asked.

Liu Qingsong called Wanlu to send the syringe and needle in.

Ran Yan took off her gloves, took the syringe, absorbed a little from the antivenom made by Liu Qingsong, and rolled up her sleeve, her hand holding the syringe continued to tremble because of the continuous operation.

Liu Qingsong grabbed her hand, "Ran Yan, what are you going to do!" Can this thing be tried casually? ”

"What then? His vital signs are faint now, and he can't hold the test! Ran Yan shook off his hand and said in a flat voice.

...