The system takes me for surgery

Ouyang Pingan said: "This teacher is very strong, but very low-key."

Liang Yi said: "That's right, he has no problem going to any top hospital in China with such a resume."

Lu Chenhao sat down and said, "Let's talk about the daily maintenance of the pacemaker first today.

Today's pacemakers are designed with anti-interference performance, so you don't have to worry about the civilian and office appliances that you often touch in daily life, and you can use them as usual.

Try not to get close to sources of strong electric and magnetic fields: such as radar, TV towers, etc. If you are too close to these strong electromagnetic fields, it may affect the function of the pacemaker, but this is relatively rare in daily life.

There are also conventional medical equipment inspections, such as fluoroscopy, X-ray film, CT, etc., which will not affect the pacemaker; Affect, so tell the doctor in advance that you have a pacemaker, and they will deal with it,
I believe that your attending doctor told you about this when you had the pacemaker surgery. "

The reason why I want to talk about such simple knowledge is to let these patients slowly enter the state of listening to the lectures.

Lu Chenhao began to stand up and said, "There was an 83-year-old old lady who suddenly fainted at home. Fortunately, my wife found out in time and quickly called 120 to send her to the hospital. After checking the electrocardiogram, I found out that it was the old lady's pacemaker." She was on strike, and her heart rate was only 30 beats per minute. The doctor quickly implanted a temporary pacemaker in her, and the crisis was saved. The old lady said in shock that she was lucky to come in time and save her life, otherwise she would regret it. Come Let's guess what the old lady said about the disease?"

Someone said: "High blood pressure!"

Lu Chenhao smiled and said, "At such an age, I should have high blood pressure, but it's not high blood pressure."

"Stroke!"

"That's not it. A stroke generally has nothing to do with the heart."

A middle-aged man wearing glasses stood up and said: "The pacemaker is dead!"

"Excellent, you can come to work in our hospital tomorrow." Lu Chenhao said with a smile.

Everyone laughed immediately, thinking that the expert's lecture was very interesting.

Lu Chenhao went on to say: "It was later discovered that this attack was caused by the old lady's waywardness. Six years ago, Grandma Li often suffered from dizziness due to bradycardia. On the doctor's advice, a permanent pacing was implanted. Since the pacemaker was implanted, Grandma Li has never experienced dizziness or discomfort, walking, playing chess, and drinking morning tea are all easy to do, and this little life is more comfortable than mine.”

Everyone listened with gusto, Qin Hanyun said: "Teacher Chen Hao is very good at giving lectures, why doesn't he ever attend lectures?"

Gan Xiaoyi said: "Brother Hao is such a handsome person, he probably doesn't like this kind of scene, if Liang Yi hadn't invited him, he probably wouldn't have shown up."

At this time, Liang Yi was looking at Ouyang Ping'an's computer. He didn't quite understand what Ouyang Ping'an was doing, but he could read some information from Ouyang Ping'an's expression to relieve his anxiety.

Lu Chenhao continued: "This old lady went to the hospital for an examination three months ago. The doctor found that her pacemaker was about to run out of power. They suggested replacing the pacemaker. The old lady doesn't feel any discomfort now. She doesn't want to live without her children at home. In the hospital, hospitalization was repeatedly delayed. The family also knew the seriousness of the matter, and repeated dissuasion was ineffective. As a result, the battery of the pacemaker was exhausted and it completely "struck", which led to such serious consequences. Fortunately, she came in time this time, otherwise it would be more serious. Consequences, such as falls, fractures, hemorrhage, and sudden death from cardiac arrest. I want to tell this story because I want to remind many of our patients who have implanted pacemakers to pay attention to the program control of pacemakers through the story of Grandma Li. , replace the pacemaker in time if necessary."

At this time, the middle-aged man wearing glasses just asked a question, saying: "Aren't pacemakers generally 8-10 years old? Why is there a problem after 6 years? Is there a problem with the pacemaker itself?"

Lu Chenhao replied: "This question is very good. Generally speaking, a pacemaker can be used for about 8-10 years, but the life span of a pacemaker varies according to each person's dependence on the pacemaker and workload. The same. Therefore, doctors need to check the pacing and sensing functions of the electrodes to decide whether to re-implant the pacing electrodes."

A woman stood up and asked, "Professor Lu, can you ask me a question that has been bothering me for a long time?"

"Of course, what questions do you have? Just ask. If I understand, I will answer you. If I don't understand, I will check the book and then answer you." Lu Chenhao said humorously.

Everyone laughed, this expert is really interesting.

The woman asked: "Do you think our pacemaker will suddenly lose power?"

"Hey! You asked this question very well!" Lu Chenhao said in a positive tone.

Women feel honored and smile.

Lu Chenhao explained: Program-controlled pacemakers are used now, which will display the remaining power of the pacemaker. When the pacemaker is close to running out of power, the doctor will suggest shortening the pacemaker’s programming time and remind the patient to perform a pacemaker in the near future. pacemaker replacement.If it is not replaced in time, the pacemaker will enter the battery exhaustion state, turn off other additional functions by itself, reduce power consumption, and enter fixed-frequency pacing to ensure the most basic pacing function.At this time, it is still too late to replace the pacemaker.However, it cannot be dragged to the working state of battery depletion. This is because the fixed frequency pacing cannot meet the increase in heart rate during activities, and symptoms of dizziness or even fainting will appear, which is very dangerous. "

Everyone nodded and began to whisper to each other. Lu Chenhao knew that he could start talking about today's key topic, and said, "Now there is another situation that will cause the pacemaker installed on us to malfunction."

Everyone rushed to answer, but they all got it wrong.

At this time, Liang Yi gave Lu Chenhao a wink, indicating that the lecture should be sped up a little bit, because ten o'clock was still more than half an hour away.

Lu Chenhao nodded, feeling a little uneasy in his heart. Everyone in the world has fear of the unknown, and he is no exception.

"This is the case with hacking our pacemakers," he said.

As soon as this remark came out, the audience in the audience felt that it was a fantasy, but considering Lu Chenhao's identity and the quality of his lecture just now, everyone still listened patiently.

Lu Chenhao opened a new PPT and said: "If you still think that hackers only target the network or computers, then you are very wrong. A research paper published in the Journal of the U.S. Society of Cardiology shows that cyber attacks on medical equipment have increased."