After opening the sternum, quickly stopping the bleeding, and exposing the surgical field, Zheng Ren found that it was as expected that the mediastinum was very sticky.

This is the case with the second operation. After a surgical blow, the human body will have fibrous connective tissue hyperplasia, which will change the normal physiological and anatomical structure.

Looking at the sticky tissue inside, Zhao Yunlong had a headache.

Elephant trunk surgery itself is the largest surgery in cardiothoracic surgery, and the second phase elephant trunk surgery...

Difficulty x10!

Zheng Ren stretched out his hand, slapped the bleeding-stop pliers and blunt scissors on his hand.

Lao He glanced at it and thought it would take at least a few minutes to open the aorta. This was Boss Zheng's main surgery. If someone else had changed, it would take at least 30-60 minutes to escape the aortic arch smoothly.

He took out the U disk, quickly found the audio file, and clicked on the song of good luck.

The familiar and melodious music sounded, but Su Yun did not complain this time. He seemed to have not heard the background music switched at all, and was concentrating on cooperating with Zheng Ren's freedom.

Two pairs of hemorrhagic pincers fly up and down, which looks very beautiful.

The blunt scissors wandered away, and the sound of the ultrasonic knife snapped.

"Preparinized for heparinization." Zheng Ren said in a deep voice as he wandered away.

Lao He was a little surprised and surprised by Boss Zheng's confidence. Heparinization does not take long, and heparinization is usually done after the surgery area is prepared.

Boss Zheng is confident in his freedom, and estimated that heparinization was needed early in the morning.

While starting preparations calmly, Lao He paid attention to the operation.

After 3′12″, the aortic arch appeared in the surgery field intact.

The aortic arch and its branches are separated by straps.

"Heparinization is complete."

The moment Zheng Ren just happened to wear a suit, Lao He said.

The time was just right, and Lao He knew that it was not because he cooperated well, but because Boss Zheng had an extremely accurate assessment of his level.

If the medical team was a machine, it would be just a component. The level of the doctor had long been understood by Boss Zheng and calculated it into the operation process.

Seeing the perfect cooperation, it was actually a reflection of Boss Zheng's calculation ability. Lao He just sighed, but did not continue to think about it.

The operation was still underway at high speed, so he was not allowed to be distracted.

After heparinization, Zheng Ren inserted the 24f artery cannula into the right subclavian artery 2 to 3 cm. He dared not insert this side too deep, because the cannula can enter the nameless artery and seriously affect cerebral perfusion.

Then insert the secondary cannula of the right atrial cavity or the upper and inferior vena cava cannula.

“Full flow turn-over cooling.”

There was only one person talking in the operating room, and the quiet atmosphere in the operating room indirectly proved the difficulty of the operation.

Oxygenated blood supplies the whole body from the right subclavian artery through the nameless artery to the aorta, and blindly inserts the retrograde perfusion tube of the coronary sinus through the right atrium.

"Report the nasopharyngeal temperature."

“35c.”

“33c.”

“30c.”

“27c.”

When the nasopharyngeal temperature drops to 26~28c, the ascending aorta is blocked and cold-blooded cardiac fluid is injected retrogradely through the coronary sinus.

While continuing to cool down, the lesion is investigated, artificial valve replacement, pronounced end artificial vascular anastomosis, and coronary artery anastomosis when the coronary artery is bypassed.

Zheng Ren moved very quickly, but the more he investigated, Su Yun felt a little panicked.

Mafang syndrome is a congenital disease. After two years of ascending aortic duct replacement + coronary artery transplantation, the patient's local changes exceeded the original expectations.

The adhesion is very heavy, so I won’t talk about this for now. Bubble signs appear faintly in the middle of the anastomosis section, which means the possibility of interlayer afterwards.

Do the surgery require a period of bridge?

Even Su Yun was caught off guard by this situation and had a headache.

When he saw the situation in the operation area, he raised his eyes and glanced at Zheng Ren.

Zheng Ren seemed to have no emotional changes at all and was undergoing surgery calmly.

Su Yun felt a little relieved. With the boss there, he was afraid of something.

"22c." Lao He continued to report the temperature.

"20°." Zheng Ren said.

The values ​​the two mentioned were completely different concepts. Lao He reported the nasopharyngeal temperature and the key points that must be paid attention to when performing deep and low temperature circulating cessation surgery.

Zheng Ren said 20° is the angle of the patient's head lower. After Zheng Ren finished speaking, the three of them stopped the operation at the same time, and Lao He began to adjust the angle of the operating table.

The head is side downward, at an angle of 20°.

Zheng Ren then blocked the nameless artery, left common carotid artery and left subclavian artery in turn, reducing the artery flow to 8ml  /  kg·  min  , underwent continuous selective cerebral perfusion, and opened the ascending aortic blocking forceps to begin the aortic arch and arch descending surgery.

"20c." Lao He was still concentrating on reporting the temperature.

This temperature is the horn to start the general attack.

After Lao He reported the temperature, Zheng Ren immediately blocked the ascending aorta, and the heart stopped beating at the root of the aorta.

"Ice mud."

The prepared ice mud was delivered to Zheng Ren's hand.

Zheng Ren tried it first, there was ice and water, 4 degrees Celsius. There were no large pieces of ice, all of which were small pieces of ice chips, which could cool the heart as quickly as possible.

Generally, a heart surgery can produce such perfect ice mud, which can at least increase the completion of the surgery by several percentage points.

This is a detail, but an indispensable detail.

Zheng Ren was very satisfied, and the surface of his heart was placed in ice mud to cool down.

The nasopharyngeal temperature dropped to 18  c, Zheng Ren began to block the aortic arch 3  branchal vessels, and the extracorporeal circulating arterial perfusion flow was changed to 6  ml/(kg·min), and selective anterior cerebral perfusion was performed.

The aortic arch is incited along the long axis of the aortic arch, proximally to the original artificial vascular anastomosis, distally to the proximal end of the left inferior clavicle vein opening.

Because the heart stopped beating and the deep and low temperature extracorporeal circulation had been established, no blood flowed out when the aortic arch was opened.

Clean aortic arch with clear artery field.

The purpose of deep-low-temperature circulation suspension surgery is to be at this moment, and at this moment, it seems almost perfect.

"Pay attention to the amount of thrombosis in the brain." Zheng Ren said in a deep voice while cutting through the aortic arch: "If Lao He is not familiar with it, turn the screen sideways 22° and I'll look at it."

Lao He was a little ashamed. This should have been the job of an anesthesiologist.

But I was in surgery and I was just coming into contact with the new machine, so I didn’t have time to get familiar with, understand, and run-in.

He did it without hesitation as Boss Zheng said, and placed the ultrasound probe on both sides of the patient's neck, which did not affect the position of the surgery and the head. The screen was facing Boss Zheng, and countless data were floating on it.

The amount of data is so large that Lao He is helpless.

This should be a laboratory product or an early stage, and there must be computer precision calculations to output the results.

But now there is no final result, and I can only see countless data signals on the screen appearing like snowflakes.
Chapter completed!