Back in 2002 as a doctor

Step by step was methodical. Although Zhou Congwen was not in a hurry, the speed of the operation was much faster than that of Professor Michael in terms of the pre-operation.

Ragged exclamations continued to resound, echoing in the exhibition hall.

The simpler the steps, the better the level of the practitioner can be seen.

Of course, those who can tell the level of the surgeons are all masters of technology. They have been tempered by thousands of interventional surgeries and countless failures before they can do this.

So stable!Zhang You looked at his eyes a little moist.

He thought of sleeping in the operating room every day in order to learn surgery when he was young.

At that time, I was full of vigor, sleeping in the operating room every day, no matter what surgery I had to follow.

At that time, he also touched the threshold of stability, but unfortunately there was no drill or guide at that time.

Unfortunately, it was too late when I met Zhou Congwen. Zhang You knew that since he became the director, he had lost his vigor and spirit of being brave and diligent.

The goal of life has been achieved, why make it difficult for yourself?

It is extremely difficult to maintain stability, just like an athlete maintains the peak state, it requires non-human self-discipline and an ascetic life.

But Zhou Congwen showed a level that Zhang You had never reached in his entire life, even if it was not a surgical operation, Zhang You could understand it.

To be able to achieve such stability, how many crimes and beatings must be suffered!

Soon Zhou Congwen completed the pre-operation and started imaging.

There was a burst of exclamation, and Zhang You suddenly saw the radiography image displayed on the live screen.

As expected, two of the patient's coronary arteries were blocked, among which the anterior descending artery and circumflex artery were blocked by more than 90%!

It is obvious that the difficulty of the operation is much higher than that of Professor Michael.

This is the disadvantage of temporarily selecting patients. It cannot be predicted in advance, so we can only bite the bullet and treat it as an emergency operation.

"Damn Olida, why did they temporarily decide to have an operation!"

A doctor complained that after seeing Zhou Congwen's previous operation, he could not accept the public embarrassment of a top surgeon.

"It's a bit sloppy, and the operation to completely remove the emboli cannot be replicated at all. The emboli are too soft and change too much. The hardness of the emboli in each coronary artery varies with time, and there is no room for error. "

"Poor surgeon, I'm already praying for him. I hope he won't be too sad after the failed operation. He is still so young, and he will definitely have a bright future in the future."

Everyone's heart was raised, but Zhou Congwen didn't seem to feel it.

His hand was still steady, and the [-] guidewire entered the anterior descending artery without any trembling, and went straight into the thrombus blocking the coronary artery.

After seeing this scene, many doctors put their hands together in front of them, but their eyes were not closed, but they were staring at the screen.

Like the countless teaching operations Zhang You had seen, the guide wire penetrated the newly formed thrombus smoothly, and the emboli with variable hardness did not cause the slightest bit of trouble when the guide wire penetrated in Zhou Congwen's hand.

"My God, what did I see!"

"Did it succeed? Did it succeed again?!"

"If the calculation is correct, the thrombus formed in a very short time, less than 2 hours, and it will break with a light touch. Wouldn't it be better to suck it?"

"There are residues in the suction thrombus, it would be great if the surgeon can take it out completely."

"Impossible. What we saw just now was a demonstration operation. I don't know how many sets the operator performed to select such a model. But now he is performing an emergency operation, and it is absolutely impossible to remove it completely!"

Then the thrombus retrieval catheter was inserted, inflated after penetration, the balloon was inflated, and the newly formed thrombus was successfully removed.

The operation is still very stable, as if carved out of an assembly line mold.

Then I saw a 3.2cm thrombus appear on the white gauze, and the exhibition venue was boiling.

The thrombectomy operation can be completely replicated, instead of relying on luck to completely remove a thrombus as just guessed.

However, this sudden emergency operation was performed more smoothly than the previous operation!

Zhang You knew it was because Zhou Congwen didn't pause during the operation, not because he deliberately paused at key points for a teaching operation.

Chapter 0725 Let the whole academic world tremble!

The black and red blood clots on the white gauze are so dazzling, so familiar yet unfamiliar.

The intact thrombus was very fresh, and the surgeon held it in his hand. As his hand shook slightly, the thrombus seemed to be trembling too.

Looking at the thrombus, Zhang You felt inexplicable.

Surrounded by doctors from all over the world speaking bird language, Zhang You could not understand what they said, but could understand their tone.

No matter what language they use to talk, their words are full of surprise.

In particular, there are many hoarse voices in the conversation, and Zhang You knows that the hoarseness is a sequelae of nervousness and excitement.

I saw with my own eyes that there was an acute attack of myocardial infarction just now, and the culprit was completely removed in less than 2 hours. This is no less than a miracle for circulatory physicians and cardiac surgeons.

How many patients have been sent, and there are still such fresh emboli in the coronary arteries, but the effect of intravenous thrombolysis is limited, and the best rescue time is just like that.

If the right radial artery can be punctured, the embolus can be removed...the patient has almost no sequelae!This undoubtedly made all the doctors present see a bright future.

Thinking of this, Zhang Youyou couldn't help getting excited.

Although Zhou Congwen was not defeated by the huge pressure as he imagined, he took out a complete embolus super steadily.

Zhang You has forgotten his original intention, and he remembered what Zhou Congwen said about the cardiovascular disease and stroke center.

If I can learn it myself... No!

Zhang You shook his head suddenly, what was he thinking.

If there is a heart stroke center, it must be an emergency department, one operation after another, a person of my age can't hold it.If I should accept Congwen's errand next week, I'm afraid I will have to lie on the hospital bed in less than a month.

This is a ghost gate, Zhang You has a very clear understanding of this.

At my age, it's okay to do some emergency surgery, but to be on call 24 hours a day for emergency treatment is courting death.

Zhang You was very entangled in his heart, and the complicated feeling was hard to describe in words.

He is the chief director of cardiothoracic surgery and has done many bypass operations. He naturally knew the significance of Zhou Congwen's thrombectomy, and his mind became active.

Who the hell didn't have the heart to heal the sick and save the sick when he was young?

When he was so young, his eyes were not full of light.

Zhang You was also young. Back then, sleeping in the operating room was not for money. It was a beating pure heart to serve the people. Supporting him to survive, he learned all the skills.

This also formed a kind of instinct in Zhang You's heart, even though as time went by, the butcher's knife carved wrinkles on his face, left dust in his heart, and his eyes were dirty and no longer clear, this instinct still exists.

The feeling of watching the live surgery is different from watching the teaching surgery. Coupled with the background "music" of countless surprises and emotions, Zhang You seemed to be enlightened and impulsive for a second.

But after all, he is no longer the boy he was back then, thinking of countless difficulties in a flash, he sighed deeply.

No, absolutely not, Zhang You thought sadly.

At the beginning, every young man with great ambitions bowed his head to life after all.

The entanglement in his heart made him very uncomfortable, and he always looked up at the screen, trying to divert himself from that complicated feeling.

The operation should be finished, Zhang You thought.

An angiography may be done next, and the operation is over.

As for the other blocked branch, it was an old thrombus, which couldn't be completely sucked out through the operation just now.

Let's end it.

In front of doctors from all over the world, he showed his miraculous skills. After returning home, he was under more pressure, and the more Zhang You thought about it, the more distressed he became.

Ever since Zhou Congwen took out the thrombus completely, the surrounding noises have not stopped, which annoyed Zhang You.

He took a deep breath, and saw Zhou Congwen start the radiography, and then... Zhang You was stunned to see that Zhou Congwen did not pull out the guide wire as he imagined, and ended the operation.

But...

But...

Instead, continue superselection and enter another coronary artery blocked by old thrombus.

What is he going to do? !

Zhang You was stunned for a moment.

At the same time, the doctors in the exhibition venue were also stunned.

Do you still want to do it?

Could it be said that this relatively old thrombus can also be taken out with a balloon? !

Impossible, absolutely impossible!

The tide-like noise receded directly, so quickly that the echoes in the exhibition hall were still wafting.

……

……

"Shen Lang, do you know what Bernoulli's principle is?"

"Congwen, are you okay?" Shen Lang looked at Zhou Congwen and asked suspiciously.

Seeing the ghost of Bernoulli's principle made Shen Lang feel like he was in a middle and high school physics class. Zhou Congwen asked himself what he was doing.

"Daniel Bernoulli proposed Bernoulli's principle in 1726.

This is the basic principle adopted by hydraulics before the continuum theoretical equation of fluid mechanics is established, and its essence is the conservation of mechanical energy of the fluid.

Its most famous inference is: when the flow is at a constant height, the flow rate is high and the pressure is small. "

"Why are you talking about this?" Shen Lang couldn't figure it out.

"Remember to learn it when you get back." Zhou Congwen asked the assistant behind him to push the machine up. "The mechanical thrombus suction device crushes the thrombus mechanically and expels it from the body."

"The high-speed saline is sprayed to the thrombus through the inflow chamber of the double-lumen catheter, and the high-speed saline is sucked out through the outflow chamber at the same time, and the thrombus is crushed and discharged out of the body by using Bernoulli's principle."

"..." Shen Lang listened to Zhou Congwen explaining the principles of the machine as if he was listening to a scripture from heaven.

He also thought that the machine replaced the human hand and played a role of negative pressure to suck the thrombus.

From Shen Lang's point of view, the machine is simply sensationalism, a trick of Zhou Congwen.

But what Zhou Congwen said just now exceeded Shen Lang's expectations.

Zhou Congwen didn't say much, and started to connect the instrument.

The machine was a blueprint he drew for Liu Xiaobie, and he passed it several times in the middle.

Prototypes were quickly designed in Pangkezhuang's laboratory.

Working principle Mechanical thrombus aspiration devices can be divided into two categories: one is to remove thrombus through mechanical vacuum pump negative pressure suction, the principle is similar to manual thrombus aspiration catheter, except that the negative pressure suction is generated by a mechanical vacuum pump.

The thrombus is aspirated by slowly advancing and withdrawing the catheter while maintaining negative pressure.

The other is the machine in front of you, which crushes the thrombus mechanically and expels it from the body.

The mechanism of thrombus crushing can be divided into two types: mechanical rotary cutting and fluid crushing.

Zhou Congwen doesn't know whether the existing technology can produce mechanical rotary cutting drills, but he can definitely crush thrombus with water flow.

Thinking about it carefully, Liu Xiaobie is still really capable, no matter what she thinks, she can take out things to her heart's content.

Zhou Congwen smiled slightly, so let Lan Ke and the entire academic world tremble today.

Chapter 0726 Olida's Secret Weapon

"The thrombus aspiration device consists of three parts: a thrombus aspiration catheter, a jet pump, and a driving unit. The minimum applicable vessel diameter is 2.0mm. Generally, a 4F catheter is used for autologous coronary arteries, and a 5F catheter can be used for great saphenous vein graft vessels."

While performing the operation, Zhou Congwen explained the mechanism to Shen Lang.

There was no light in Shen Lang's eyes, and no flames burning behind him, but he listened very seriously.

The recent period of practice made Shen Lang gradually enter the state, and the idea left by Wang Chengfa to let Shen Lang lie down helplessly was erased by Zhou Congwen's simple and brutal force.

"Prepare heparin saline before suction: generally add 1000U heparin per 5000ml normal saline."

Zhou Congwen was nagging, while Shen Lang was helping, while desperately remembering what Zhou Congwen said.

Shen Lang has his own advantages. He has long felt that Zhou Congwen's instructional surgery videos are of great clinical use.

When he came to Cleveland, compared with the world's top performers, Shen Lang was even more sure that Zhou Congwen's method was top-notch.

Although Shen Lang has not adapted to this situation and this kind of teaching, he was born in a basic hospital after all, so his vision is limited.