Xie Wanying used the scissors in her hand to cut off the excess seams.

The nurse opposite wiped the sweat from the surgeon's forehead again.

In contrast, Xie Wanying's face was not sweaty even after being scolded for most of the day, and she looked like a frozen object. The nurse and the anesthesiologist glanced at her face.

It's impossible to say that she didn't panic. The teacher didn't inform her in advance to let her prepare herself mentally, and suddenly asking her to be an assistant made her a little panicked, Xie Wanying admitted. Even though she had seen the teacher being an assistant many times and knew what an assistant was supposed to do, it still took some time to adapt. Fortunately, her quick-reacting brain helped her hands adapt.

In the second half of the operation, the nurses and anesthesiologists breathed a sigh of relief. The sound of the pointer in the operating room became less frequent, and the scolding decreased to zero.

Towards the end of the operation, the teacher gave her the opportunity to practice another suturing method.

Because the patient was thin and weak, the clinical teacher decided to use full-thickness decompression suture on the patient.

"Do you know how to sew?" asked Teacher Sun.

Xie Wanying quickly realized that it was the bed she was in charge of, and answered, "Teacher Tan sewed bed 3 last time."

...

...

This student often steals his lessons. Tan Kelin's thin single eyelids and cold knife-like eyes drooped under his eyebrows, and only the pointer in his hand turned in his palm, which slightly revealed his funny and indescribable mood.

"I think this is not mentioned much in your medical books." Sun Yubo recalled the textbooks he had studied in the past.

How can textbooks that are compiled every few years keep up with the rapid development of medicine? Often, some of the knowledge in the books is outdated and impractical when applied to clinical practice. Otherwise, why do we repeatedly emphasize that medical students should have enough internship time before graduation?

Medicine is a practical technical profession, and suturing is not just embroidering on a book.

"Since you have seen Teacher Tan sew, you can give it a try." Sun Yubo did not test the student's answer, because he knew that the student in front of him was too good at memorizing and there was no need to test him on this.

Xie Wanying had no choice but to nod, and kept reviewing the key points of the knowledge in her mind.

The skin sutures she practiced a few times before were one layer of layered sutures.

The patient's abdominal cavity is opened during surgery, and several layers of tissue need to be opened to reach the organs, including the skin, subcutaneous fascia, tendons, muscles, peritoneum, etc. These opened tissues need to be sutured again after the surgery. In this way, the skin is sutured one layer, the fascia is sutured one layer, the tendon is sutured one layer, the peritoneum is sutured one layer, and so on. This is called layered suture.

Compared with layered suture, full-thickness suture, as the name suggests, involves sewing several layers of skin, fascia, etc. together.

The patient in front of me is malnourished. If we sew the wound layer by layer, it may not promote wound healing. On the contrary, it will go against the purpose of suturing, causing the exudate in the body to be unable to be effectively discharged or absorbed, increasing the chance of infection. It is better to sew several layers at a time. The sutures are to pull the tissues closer and aligned. The final healing still depends on the patient's own tissue growth and has nothing to do with the sutures.

The same principle applies to decompression suture. Thin patients have less fat, so the sutures will pull the tissues too tight, and the scars will grow like centipedes, which is even more unsightly. Such patients often have high intra-abdominal pressure and high tissue tension, and a violent cough can easily break the sutures. To this end, the pressure on the incision should be reduced, and the distance between the needle entry and exit points and the incision should be increased, which is figuratively called decompression suture.

So, this patient was treated like bed 3, and even the peritoneum was not sutured.