Mu Tao stood beside Mr. Wu, as he had always done before.
In the operating room, Boss Zheng began to step on the line.
On the screen, the guide wire moved forward slowly, and after a few minutes, it was placed at the terminal end of the ophthalmic artery.
Because super-selection should be as close as possible to the retinal capillary network, Boss Zheng uses the thinnest guidewire.
It is thinner than the guide wire used in neurological interventional surgery. It is the kind of guidewire specially used for interventional surgery on babies.
This kind of guide wire is soft and cotton and cannot be used with any force. Pleating during the super selection process is particularly likely to cause super selection failure.
However, Mu Tao was filled with emotion when he saw that although the microguidewire controlled by Boss Zheng was moving slowly, there was not a single mistake or reoperation.
"Mu Tao, do you know Boss Zheng's methods?" Mr. Wu asked.
"Teacher, it should be about the understanding of turbulence caused by blood flow in blood vessels." Mu Tao said, "Boss Zheng has a deep understanding of turbulence. I think this is why he is so good at interventional surgery."
"Yeah." Mr. Wu nodded.
Overcoming the influence of turbulence is the most profound intervention theory and technique. Mr. Wu has been doing interventional surgeries for half his life, but he is only vaguely aware that guide wires and micro-guide wires travel through blood vessels, and blood flow will have a huge impact on them.
As for how to overcome it and increase the success rate of the operation, Mr. Wu was clueless.
Boss Zheng has already mastered the skills of dealing with turbulence at a young age, and Mr. Wu admires this very much.
This is a breakthrough at the technical level, but it is difficult to quantify and even harder to grasp.
The microcatheter enters, but it does not go to the extreme position, but stops in the blood vessel without touching the surrounding blood vessel wall.
When the angiography started, just as Boss Zheng speculated, part of the retinal capillary network was blocked, seriously affecting the red blood cells carrying oxygen that provide "nutrients" to the retina.
After confirming the condition, the operation continues. Su Yun connected a syringe to the end of the catheter and began to inject saline with a small amount of contrast agent.
His movements are slow, careful and delicate.
After the normal saline entered the retinal capillary network, Su Yun began to increase the pressure slightly.
The "viscous" dye macromolecules are "pushed" forward by the saline injected from the syringe.
Because there were gaps between the catheter and the surrounding blood vessel walls, Su Yun had been carefully controlling the intensity of his injection of physiological saline to avoid capillary rupture and bleeding.
This step requires a lot of patience.
When it was time to go fast, Boss Zheng performed the surgery very quickly; when it was time to go slow, Boss Zheng was not in a hurry and waited quietly.
time flies.
After 12 minutes, the location of the blockage began to move. The macromolecules deform under pressure, comply with the pressure of the capillary wall, and are "pushed" away bit by bit.
Mu Tao knew that this was the most difficult part of the operation.
Here, you need to constantly change the force slightly so that the pressure adapts to the elasticity of the capillaries.
After 3 minutes, Su Yun stopped.
Mu Tao's heart moved and he pressed the intercom. He didn't speak, but listened to the conversation between Zheng Ren and Su Yun inside.
"Boss, I can't do it anymore." Su Yun gave up, which was rare. "The compliance of the tube wall is not good. If I push it further, I feel that the capillaries are going to break. The force is too small, and there is no effect."
"Oh, let me do it." Zheng Ren took the syringe, "I'm doing heart compressions during liver transplantation. Your arm strain hasn't healed yet."
"Lao Fan gave me rubbing alcohol with bruises for a few days, and I'm much better. But it will take a while before the operation is too detailed. You tell me, the operation should be done as slowly as possible. This is a work-related injury!"
"Oh, okay, it's a work-related injury." Zheng Ren responded calmly without saying anything more.
"Slow down!" Su Yun reminded worriedly.
"It's okay, I know it well." Zheng Ren said, "She is still young and the elasticity of the retinal capillaries is good. I can feel the change in resistance and will be very careful. Don't worry."
"Suya, tell me how much trouble you have caused me." Su Yun began to chatter uncontrollably.
"Brother Yun, I'm sorry." Xu Suya whispered, her voice trembling.
"Don't talk to the patient," Zheng Ren said. "Changes in airflow during talking lead to changes in the pressure of the capillary network."
"There are so many things." Su Yun said scornfully, "Actually, life is not as difficult as you think. When you encounter a difficult problem, list all the solutions. Then you find that you can't do anything, so just give up. ”
This sentence has no beginning and no end. I don’t know if I am talking to Boss Zheng or Xu Suya.
Mu Tao was stunned when he heard this.
"Really, Lao Mu." Su Yun asked later.
“…”
He knew that he was "eavesdropping" and it turned out that he was talking to himself. Mu Tao was speechless.
This was to criticize him for not doing a good job in surgery, but he was not talking about anything else but interventional surgery. Who can guarantee that his surgery will be better than Boss Zheng’s? Nonsense!
Not only Boss Zheng, he should be no match for Su Yun.
Mu Tao smiled and pressed the intercom button again.
If you are not allowed to listen, then you will not listen.
Looking at the images on the screen, after Boss Zheng took over, the overall operation speed seemed to be no faster than when Su Yun performed it.
Many clogged black spots move invisibly and are almost impossible to detect.
But as time went by, one hour and 35 minutes later, Mu Tao recalled the previous images and overlaid them.
This makes the comparison much simpler and more direct, and the movement of black spots in many blocked spots is still very obvious.
The operation was proceeding slowly.
No one spoke, Mr. Wu and Mu Tao waited quietly.
Boss Zheng didn't seem to be in a hurry. He was infinitely patient, carefully feeling the pressure transmitted from the syringe, and adjusting his strength at any time.
An operation lasted a full 4 hours and 22 minutes.
Open surgery is countless times more difficult than destructive embolization surgery, which can be seen from the time.
When the black shadow finally disappeared and the entire retinal capillary network was covered with contrast agent, Mr. Wu's body "softened" for a moment, and then he leaned back on the chair.
Those blood vessels covered with contrast agent are like the roots of plants, transporting sufficient nutrients to the retina, allowing patients to see again.
The surgery could be said to be a success after reaching this point. The teacher was too nervous, and Mu Tao knew it.
It seems that the operation is not difficult, it just opens the retinal capillary network. But knowledgeable people know how difficult this surgery is. If you are not careful, if the surgery fails, the patient may suffer permanent blindness.
However, this is just one eye.
"Boss Zheng, do you want to change hands and take a break?" Mu Tao pressed the intercom and said.
"Su Yun, are you tired?"
"Not tired."
"That's no need." Zheng Ren turned around, his eyes bent through the leaded glass, and gave Mu Tao a smile.
…
…
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