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Remember [new] in one second! Lu Chen didn’t care much about what others thought.

In the electrophysiology training class in Kyoto, he valued the teachings of the old professors more.

These are the top electrophysiology experts across the country.

For example, the person teaching you today is Yang Feng, an electrophysiology expert from the Department of Cardiology, Kyoto University School of Medicine.

Yang Feng, he is currently one of the authoritative experts in the field of electrophysiology in China.

When Lu Chen originally applied for the Kyoto University School of Medicine, his cardiology tutor was none other than Yang Feng.

Lu Chen vaguely remembered the scene when Professor Yang Feng gave him an interview.

Professor Jia Bo, who serves as a judge at the electrophysiology conference, is just a student of Professor Yang Feng.

At this moment, Yang Feng stood on the podium with a stern expression. He looked around at the people below and then slowly said: "When the pacemaker is embedded in the subcutaneous tissue in front of the pectoralis major muscle, the prototype of the single-electrode pacemaker is close to the chest. The front of the large muscle is easily affected by myoelectric potential, and there will be three manifestations. Do you know which three are they?"

There was silence among the professors.

Everyone frowned. Some people had something in mind, but they were not sure.

At this time, Min Xiaobo suddenly raised his hand.

"You answer." Yang Feng pointed at Min Xiaobo.

Min Xiaobo immediately stood up and said: "The first one should inhibit the pacemaker from issuing pacing pulses. This situation is relatively common. The second one is to trigger ventricular pacing, and the ventricular tracking frequency is \u003c the programmed high limit frequency. As for the third one, it triggers ventricular pacing. Three kinds...I haven’t thought of them yet.”

The expression on Yang Feng's face remained unchanged, still cold, "Okay, sit down. Does anyone know the third option?"

Min Xiaobo touched the back of his head and sat down helplessly.

There were whispers among the teachers. Everyone had some opinions, but they were still not sure.

A long while.

Seeing no response from everyone, Yang Feng began to actively look for "prey".

"Fang Ruzhang, you answer."

Fang Ruzhang sat in the last row with an awkward smile on his face.

"This...I don't know much..."

Yang Feng frowned and spoke without mercy, "Fang Ruzhang, how did you get to the third week? You don't even know this question?"

Fang Ruzhang felt a little angry, but he didn't dare to show up.

Although he borrowed time from Lu Chen's simulated operating room, he passed the second week's weekly exam on his own!

However, Fang Ruzhang's current results rank him at the bottom of the promotion list.

In the third week of the weekly exam, five people had to be eliminated, and it was almost impossible for him to pass.

"Duan Jiufang, do you know?" Yang Feng started to call names again, looking directly at Duan Jiufang, "I see that you are usually more active in the class. Do you know the answer to this question?"

With a confident smile on her face, Duan Jiufang stood up and said loudly: "After the atrial electrodes of the dual-gun pacemaker sense myoelectric potential, it may trigger cardiac arrest."

Yang Feng raised his eyebrows, "What's the reason?"

"Uh..." Duan Jiufang paused and said, "It may be because the pacemaker inhibits the pacing pulse, and the electrocardiogram shows its own heart rhythm, causing a brief total cardiac arrest!"

After saying that, Duan Jiufang looked at Yang Feng expectantly.

Yang Feng shook his head slightly, "Not quite accurate."

"Ah?" Duan Jiufang looked disappointed. She had thought about this answer for a long time and it was reasonable and well-founded, but it was rejected.

Yang Feng was a little disappointed. He looked at Yu Hewei in the row in front of him.

I wanted to name Yu Hewei, but in the blink of an eye I felt it was not necessary, because he must know it.

Yang Feng continued to look for the next target, and finally settled on one person.

"Lu Chen, come and answer."

Lu Chen sat in the first row, directly facing Yang Feng's gaze.

In the training class, everyone’s attention is focused on this.

Lu Chen's name had been revealed during the training, and many people knew this somewhat evil little genius.

Lu Chen smiled. He already had the answer in his mind, so he stood up and said, "If pacing is performed in an asynchronous manner, that is, when the myopotential frequency is very high, the pacemaker will initiate pulses at the interference frequency or low-limit frequency. The incidence rate is related to the quality of the pacemaker, the sensitivity of the setting and the degree of waving of the patient's upper limbs!"

After a pause, Lu Chen continued: "As Teacher Duan just said, it may cause transient total cardiac arrest."

As soon as Lu Chen's words came out, the classroom was so quiet that you could hear a pin drop.

Everyone was secretly pondering Lu Chen's words in their hearts.

"Okay!" Yang Feng finally showed a smile. He walked up to Lu Chen, patted him on the shoulder, then turned to Duan Jiufang and said, "Xiao Duan, although your answer is right, it is not comprehensive. I still have to give it a try today. Lu Chen’s answer is the most comprehensive!”

"Professor Yang deserves the award, but you still teach well." Lu Chen smiled.

Yang Feng smiled, saying this was useful, "Then tell me, how to identify the influence of myoelectric waves on the pacemaker?"

Lu Chen thought for a while and then said: "Sometimes obvious myoelectric waves can be seen on the surface electrocardiogram, but it does not affect the pacemaker function; sometimes even though the myoelectric waves are not obvious, the pacemaker function is inhibited."

"Myoelectric wave interference often occurs when young people and manual workers are engaged in physical activities. In order to identify the impact of myoelectric waves on the pacemaker, the patient can be asked to do force resistance exercises with the limb on the side of the pacemaker implanted under ECG monitoring. , observe the functional status of the pacemaker and test the perception threshold of myoelectric waves, and then appropriately adjust the pacemaker's sensing sensitivity through program control to eliminate the influence of myoelectric waves."

Yang Feng smiled and said, "Well said!"

Then he waved his hand and motioned Lu Chen to sit down, "The influence of myoelectric potential on pacemakers is very common in clinical practice, but it is easy to be ignored. We are doing electrophysiological interventional surgery, and once we ignore this detailed influence , may lead to serious consequences, such as the points we just mentioned, malignant arrhythmia and even cardiac arrest."

…

Yang Feng is indeed an expert professor in the field of intracardiac electrophysiology.

The class was taught in a simple and profound way, leaving everyone with endless aftertaste.

Although Professor Yang Feng is now more administrative-oriented and has fewer opportunities to perform clinical operations, his experience here is unmatched by the group of young and middle-aged doctors in front of him.

Lu Chen gained a lot from this lesson.

He now has an advanced skill card for electrophysiological intervention and has a high ability to accept obscure knowledge.

In the blink of an eye, the third weekly exam was over.

First place, Yu Hewei!

No one can challenge his position.

The second place is still Lu Chen!

Lu Chen, like Yu Hewei, once again retained the second place.

Lu Chen met Yang Feng on the way back from the hospital where he was assessed to the training class.

I thought I was just passing by by chance, UU Reading www.uukanshu． Net did not expect that Yang Feng would take the initiative to talk to Lu Chen.

"Lu Chen, are you interested in following me in the next second stage?"

Yang Feng had a bright smile, which was different from his usual indifferent expression in class.

The first phase is almost over.

Yang Feng basically acquiesced that Lu Chen could pass the first stage of the assessment.

In the second stage, everyone left will have to choose a mentor.

Lu Chen looked at Yang Feng in front of him, his expression slightly dazed.

He thought of the slightly awkward look he had during the interview in front of Professor Yang Feng a year ago.

Back then, Lu Chen wished that Yang Feng could hire him.

However, things backfired.

Today, one year later, Professor Yang Feng finally said these words.

However, Lu Chen smiled and shook his head: "Professor Yang, I'm sorry, I already have my favorite tutor."