Chapter 2812: with translation of chapter title

Zheng Ren held a 50ml syringe in his hand, after simple disinfection, he inserted the needle at a point 0.5cm above the pubic bone.

The bladder full of urine pressed against the abdominal wall; inserting the needle was not difficult. Immediately Zheng Ren began to draw out the urine accumulated in the bladder.

Filling the needle tube of the 50ml syringe to capacity is about 60ml; after six aspirations, Zheng Ren turned his head to look at the ECG monitor.

As Su Yun performed chest compressions and the urine accumulated in the bladder decreased, atrial fibrillation appeared on the ECG monitor.

"Continue chest compressions, Gu Xiao Ran! Prepare for defibrillation!"

"Give epinephrine and lidocaine intravenously."

Gu Xiao Ran took the defibrillator paddles from the circulating nurse and asked, "How much energy?"

"200J."

"Teacher He, I've defibrillated." Gu Xiao Ran still cautiously greeted Lao He, but seeing Lao He holding a syringe, waiting for him to defibrillate first, he inexplicably felt a bit panicked.

It was like a machine that had been running smoothly, but suddenly stalled a bit because of his own actions.

"Xiao Ran, give it to me, hold on tight." Su Yun, in an awkward posture, knelt on the operating table performing chest compressions, he said anxiously.

"Oh, oh." Gu Xiao Ran immediately handed the defibrillator to Su Yun.

"Thud~"

Under 200 joules of energy, the patient's ventricular fibrillation showed some improvement.

"Continue." Zheng Ren directed the rescue.

As the heart rate appeared, his words were no longer as dense as at the beginning.

After Zheng Ren drew out 600ml of urine, he then removed the needle from the syringe.

"Yu Zong, perform a cystostomy." Zheng Ren looked at Yu Zong and said.

"Oh oh, okay." Yu Zong stood in the operative area, watching the patient's heart rate and ECG on the monitor go from normal to flatline and back to normal, a process that had nothing to do with him, as if he were observing a model emergency rescue lecture.

But... he seemed to be the surgeon himself; he should be the one standing in the middle directing the rescue. Seeing Zheng Lao Ban directing from the center, Yu Zong felt a bit envious.

Zheng Ren glanced at the patient's ECG; it had stabilized, and he finally let out a long sigh.

"It's fine; Yu Zong, first do the cystostomy, then remove the nail." Zheng Ren said.

Although the ECG monitor still occasionally sounded two alarms, after three defibrillations and the effects of epinephrine, lidocaine, and atropine, it had gradually returned to normal.

Most importantly—the urine in the bladder had been drawn out by Zheng Ren.

After observing for a few more minutes, Yu Zong had prepared the sterile abdominal drape; when he began the cystostomy, the patient's vital signs had already returned to normal.

"Boss, you're really like a mouse and an ant." Su Yun had some sweat on his sterile cap, not from nervousness, but because his half‑kneeling posture on the operating table while doing external chest compressions was too awkward.

Actually, just adding a footstool under the operating table would have been enough, but at that moment the heart rate plummeted like a cliff, the ECG flattened into a line, and nobody had time to think about all that.

Surely, whatever is fastest will come.

"Urinary retention in the bladder stimulates the vagus nerve." Zheng Ren had no intention of going up to help Yu Zong; it was just a cystostomy, and incidentally he wanted to check whether the 50ml syringe needle had damaged any other organs—this barely counts as surgery, more like a handling procedure, which Zheng Ren wouldn't perform himself.

"Again, rich clinical experience?" Su Yun instinctively blew out a breath; the hot air couldn't get through the three layers of mask, escaping through the gap above the nose bridge.

"Hmm, definitely." Zheng Ren spoke frankly, took off his sterile gloves, turned and sat back on his original stool.

"Zheng Lao Ban, Yun Ge'er, what's going on?" Yu Zong asked, still feeling uneasy.

Just now, when the patient's heart rate plummeted like a cliff and the ECG flattened into a line, people were dazed, not yet realizing fear. But now everything is over; looking back, Yu Zong feels apprehensive.

This is uncanny! A perfectly fine patient who walked in himself, after a few minutes of surgery, just died suddenly?!

"As I just said, it's the vagus nerve being stimulated." Zheng Ren said lightly, leaning against the wall, feeling a slight coolness from the wall; he also felt somewhat relieved.

Fortunately, in the end, unable to find an answer, when he came out of the system operating room he heard Su Yun and Yu Zong talking about high bladder pressure, and at the moment the last nail was opened, urine might spurt out.

This line of thought led Zheng Ren to turn back to the system operating room, first perform a cystostomy then the surgery, and the experimental subject did not suffer cardiac arrest.

The problem was found, but it's a bit regrettable that before Zheng Ren could speak, the patient's heartbeat had already stopped.

But being able to revive him is good, Zheng Ren thought.

Seeing Zheng Lao Ban unwilling to talk, Yu Zong had no choice but to search for the pubic bone, preparing to cut open the suspensory ligament to perform a cystostomy, while glancing at Yun Ge'er with an inquiring look.

"The vagus nerve is widely distributed throughout the body's tissues and organs, and through reflex arcs with the central nervous system it carries out various physiological activities." Su Yun said, asking, "Have you ever done eye surgery?"

Yu Zong shook his head.

"Where did you graduate? During your internship breaks, you never went to ophthalmology?"

"I have been there, but the professor definitely wouldn't let me do it. Being able to go into the operating room and stand to the side just to take a look is already good; encountering a lousy professor, you can't even get into the operating room, just writing case notes downstairs." Yu Zong said.

"Let's not talk about lousy; I bet you'll soon become the kind of lousy professor you just mentioned." Su Yun chuckled, "Did the boss say that? In the end, you become the kind of person you used to hate most."

"..." Yu Zong stared for a moment, then smiled and said, "Thank you for the kind words, Yun Ge'er."

But his smile at that moment was so stiff, he hadn't yet recovered from the sudden change.

Accidents in the operating room can happen anytime, anywhere; who knows where the problem will arise. But this problem appeared quickly and was resolved even faster; Yu Zong hadn't even reacted before the rescue ended.

But... what does this have to do with ophthalmology?

"Yun Ge'er, what's up with ophthalmology? Keep going." Yu Zong said while cutting open the skin, dissecting layer by layer.

"In ophthalmic surgery there is a rare condition called the oculocardiac reflex. When the eye muscles are pulled, they trigger a vagal response, causing excessive vagal excitation, leading to arrhythmia, bradycardia—this is called the oculocardiac reflex."

"Uh, no wonder students who haven't done internships don't go on stage."

"The reflex arc goes from the ophthalmic branch of the trigeminal nerve to the trigeminal pontine nucleus, then to the dorsal vagal nucleus, and finally the heart muscle responds; severe cases can lead to cardiac arrest. This patient is the same—vagal reflex causing cardiac arrest, right, boss?"

"Hmm." Zheng Ren nodded.