Chapter 109: Matchmaker Becomes A ‘background’!
Naked mouse tail artery diameter is usually 0.2-0.3 mm, while the diameter of human finger arteries is about 0.2 mm.
Because the artery diameters are similar, suturing the naked mouse tail artery is the best vascular suturing material for microsurgery finger replantation.
Successfully suturing the blood vessels to keep the severed finger alive is the most basic requirement for finger replantation surgery.
The theoretical premise of finger replantation surgery is that skilled microsurgeons are needed to ensure vascular suturing so that the severed finger can survive!
“Teacher Xie, isn’t that unnecessary?”
Xie Yuan’an stood up, motioned for Lu Cheng to follow her, and said, “If you’re going to brag to me about this, then it’s very necessary!~”
“You must come with me now.”
“Today, either you die understanding, or I die understanding.” Miss Xie Yuan’an seemed a bit overbearing and spoiled.
Lu Cheng: “…”
What is this all about? It’s just a suturing technique, and you’re talking about dying understanding.
Of course, Lu Cheng didn’t back down.
A training class is not like a university’s large lecture or a middle school/high school classroom’s mass catering. In such a training class, the more outstanding your abilities are, the more likely you are to gain the teacher’s favor.
These professors will prepare more surprise lessons for you, which will benefit you for a lifetime.
Although Professor Tong Yuan’an is excellent, he is young after all. Among the professors teaching this time, apart from Xie Yuan’an, they are all magnates among magnates, beings that even the hand surgery giants at Xiangya Hospital must treat respectfully.
The techniques in their hands are the most top-tier and influential in China.
Lu Cheng really had nothing else to do, and he had already checked out of his hotel with nowhere to go, so he simply followed Xie Yuan’an into the “Advanced Technical Training Room” in the hand surgery training room at Xiehe Hospital!
Upon entering, he smelled a ‘urine odor’ belonging to naked mice. However, Xie Yuan’an did not dislike the smell and walked directly towards the cage of naked mice.
“Lu Cheng, change your clothes first and put on sterile surgical gloves. I’ll get things ready for you…” Xie Yuan’an said.
Lu Cheng looked around, taking in the advanced training room.
The training room was brightly lit and spacious, with only two operating tables in the sixty-square-meter empty room.
A movable operating table, eighty centimeters wide and three meters long.
On either side of the operating table, there were four movable microscope eyepieces, which could be described as extravagant.
On the shelves by the wall were various green sterilization packs, likely containing microsurgical instruments.
There was also a cargo rack displaying various imported ‘suture needles’, ‘hemostatic materials’, etc., with each box filled to the brim.
Lu Cheng roughly estimated that if he were to steal these materials, they would be worth at least seven to eight hundred thousand.
Xie Yuan’an walked over with a cage containing naked mice, pushed it towards Lu Cheng, and then cocked her chin at him: “Let’s go…”
Lu Cheng said, “Can I not do it? Teacher Xie.”
“No!~” Xie Yuan’an’s tone was spoiled, completely unlike her previous ‘generous’ matchmaker persona. Her eyes widened as if Lu Cheng refusing would affect her dao heart.
Lu Cheng had no choice but to comply…
Lu Cheng had practiced these before. Although the naked mice at home were not as professional for practice, and the anesthetics also required reporting…
With everything prepared, Lu Cheng went on camera.
For the suturing of naked mouse tail arteries, it is in principle necessary to have one person act as an assistant. However, there are training methods for a single person, which requires a mouse tail clamp.
These instruments were all available.
Moreover, after Lu Cheng cut and exposed the naked mouse tail artery, Xie Yuan’an, fully geared up, sat opposite Lu Cheng and professionally began to assist.
Lu Cheng used hemostatic clamps to occlude the proximal and distal ends of the naked mouse tail artery, then cut both ends.
Afterward, Lu Cheng began suturing with a needle holder and imported suture needles.
Xie Yuan’an, looking through the microscope, saw the steady movement of Lu Cheng’s needle holder. Even magnified by the eyepiece, his movements were still stable, with no signs of trembling.
Xie Yuan’an looked up again and found that Lu Cheng indeed looked like a skilled hand surgeon. Her eyes widened, unblinking…
Xie Yuan’an’s heart began to churn, like blood boiling.
“Could it be? He wasn’t bragging? Then… isn’t it Mu Nanshu who said he was excellent?”
Lu Cheng’s suturing speed was not slow!
The difficulty of vascular suturing lies in the precise skill, not in the duration of the operation.
Twenty minutes later, Xie Yuan’an used the highly professional equipment in the training room to measure the mouse’s tail artery.
“Vessel diameter: 214μm!”
“Instantaneous blood patency rate: 99.3%!”
“Blood flow rate: 0.22-0.26ml/min!”
“Re2200-2500!”
“Turbulence volume ratio: 12%…”
Xie Yuan’an’s expression immediately turned aggrieved, her eyes slightly red and swollen, her voice filled with a crying tone: “Why is this happening? How can this be?”
“Why can you do this?”
Xie Yuan’an’s triple question left Lu Cheng completely confused, as if Lu Cheng couldn’t even understand what the data Xie Yuan’an had just measured meant.
Oh, the vessel diameter and instantaneous blood flow rate, Lu Cheng could understand.
Lu Cheng pointed at the data, having already taken off his gloves, and asked sincerely, “Teacher Xie, can you explain this data?”
“I’m not in hand surgery, so I don’t fully understand.”
Real damage, critical hit, decisive blow, unresolvable, Kamehameha Wave – at this moment, it all struck Xie Yuan’an’s small head, making her buzz.
Xie Yuan’an’s breathing became noticeably heavier, but despite her anger, she couldn’t lash out.
Lu Cheng explained his reason: he participated in competitions to become a professional player and earn money—
“Swoosh, huff!~” Airflow formed turbulence in Xie Yuan’an’s small nostrils, making a rustling sound upon collision.
But the facts were settled, and Xie Yuan’an could only hang her head:
“Blood flow rate is not necessarily better when it’s faster or slower. It should be as close as possible to the normal value of a naked mouse tail artery.”
“The theoretical value for naked mouse tail artery is 0.2-0.3 mL/min. Your 0.22-0.26ml/min is quite standard.”
“Since it was just sutured, the blood flow rate will naturally vary.”
“However, there are several states of blood flow. Laminar flow refers to the blood flow state where the flow rate distribution is predictable within layers parallel to the vessel wall. This flow pattern is idealized and a very good approximation of blood flow in small vessels within the entire human circulatory system.”
“When there is stenosis at the sutured site after vessel rupture, laminar flow breaks, forming turbulent or swirling flow. This is very similar to a river.”
Xie Yuan’an used an analogy to explain to the layman Lu Cheng, while internally she was bleeding tears. Why am I taking care of the mindset of this hand surgery layman!
Ahhhhhh!~
“The calculated value of the dimensionless parameter Reynolds number (Re) can predict turbulence. A value of Re less than 2000 predicts laminar flow, while a value greater than 2500 usually indicates turbulent flow.”
“Being able to control Re within the range of 2000-2500 is quite impressive.”
“However, even though the overall Re assessment does not indicate turbulence and vortex flow, in reality, local areas after injury will exhibit vortex flow and turbulence.”
“Vortex flow refers to localized eddies or stagnant blood flow that separates from the central streamline within the blood vessel. These vortices, also known as flow vortices, often appear at bifurcations and distal to stenotic regions. They usually flow against the main direction.”
“The proportion of turbulence in the overall flow will, to some extent, reflect your skill. Conventionally, if the incidence of turbulent and vortex flow is relatively high, thrombosis is prone to occur.”
“The principle behind thrombosis in the heart is turbulence and vortex flow. It can be measured using ultrasound…”
“The smaller the ratio of turbulence and vortex flow, the better. In normal blood vessels, the proportion of turbulent and vortex flow is 1%-3%, and for naked mouse tail arteries, it is 1%.”
“But that’s after recovery. Immediately after suturing…”
Xie Yuan’an looked at Lu Cheng, deflated like a proud balloon: “It’s also very good, much, much better than mine.”
“You, learning this, truly.”
“Just.”
“For the competition?”
Lu Cheng nodded. Without further words to provoke the about-to-collapse Xie Yuan’an, his body language became the last straw that broke her.
Xie Yuan’an continued to fix the camera to take pictures, to secure ‘evidence’!
Lu Cheng could clearly see her pouting, her mouth almost twisted.
PS: 1300 first subscriptions are no problem. Chapter 13 will be an extra update, for a total of eighteen chapters updated. This book is a daily doctor novel, so more characters will be introduced.
The author has drafts, not written on the fly; these chapters have undergone multiple revisions and considerations.
If the first subscription can be even higher, there will be more updates!
Above.
