Once, twice, three times. An extremely slight shaking that is almost imperceptible to the naked eye. If it were not for the fact that the ammeter was placed on a floating dish, it would not be shaken by the carriage at all. Grete could almost believe that the pointer was shaken wildly.
.
However, this kind of shaking is rare. Soon, the ammeter pointer——
Not moving anymore.
"Oh, why aren't you moving?"
"You're not dead? You're obviously still alive?"
Two pairs of probing eyes looked at Gretel. Gretel shook his head helplessly:
"I don't know either……"
There are many reasons for not moving. Either the pointer is not sensitive enough; or the friction between the coil and the base increases; or there is too much clutter, and the pointer does not know which way to swing...
More sophisticated equipment is needed. But, he doesn't know how to do it.
In modern society, the social division of labor is becoming more and more detailed. Those who make instruments only make instruments, and those who treat patients only treat patients. Any doctor in the electrocardiogram room can be pulled over and asked to rub the instruments with their hands, and dream!
Although the principle of this thing is actually simple. Grete heard gossip from his teacher in his previous life that the most primitive electrocardiograph was actually a string galvanometer - two strong magnets sandwiching a silver-plated quartz wire. However, the processing accuracy,
That's too high.
The diameter of the quartz wire must be 0.0025mm, and then it is coated with a layer of silver. Can you believe it?!
Accuracy, accuracy... Without accuracy, everything is fake...
Gretel stared at the ammeter that he finally made out, his eyes blank, and he almost sighed. By the way, even if he made a string-type ammeter, it would be useless. The first thing he made weighed 300 kilograms and took up two rooms.
Room.
Instead of spending time arguing against this crappy thing, it would be better to go to Thunderhorn with your paper and see who can help improve it.
Serira sat opposite him, stretched out her hand and shook it, then waved it again. Seeing that he had no reaction, she reached out and put her hand on the lead of the ammeter...
"Huh?"
Her eyes lit up. She glanced at Gretel secretly, and saw that he was still in an empty state. She quickly untied the wires, merged the two wires into one, and wrapped them around her fingertips.
"Hey, there really is electricity!"
"Yes, there is really electricity." Grete woke up with a start, raised his eyelids, and replied listlessly.
Silver Dragon, Silver Dragon, this talent is really amazing. Holding a wire in your hand, you can feel the electric current with your physical body...
But how to turn the current she feels into an electrocardiogram waveform that anyone can see and record with the naked eye?
Gretel shook his head.
Cerela shook her head.
Necromancer on the side: ...Although I don't understand what you are talking about, since I can't even understand, I'd better shake my head together...
Bernard, who is driving the car outside: All three of them have shaken, do you need me to shake it together?
"If I can't think of it, I can't think of it." The silver dragon girl suddenly clapped her hands, her eyes shining brightly:
"Don't worry, when we get to my aunt's place, she will definitely find a way! Her magic is the most powerful!"
"This -" Gretel hesitated. Cerela had dragged him away before because he couldn't explain the principle of the electrocardiogram. Cerera wanted to ask her aunt to help take a look. However, Gretel's idea was that before
Get things out before this -
There is no knowledge without a price. Asking a silver dragon, or an adult silver dragon, to help me study electrocardiograms, the reward is not enough even if I sell it, right?!
"Oh, it doesn't matter!" The silver dragon girl waved her hand confidently and took care of everything:
"My aunt is pregnant, and she is not allowed to go out to play. She is bored to death! If we go to her at this time, no matter what we do, she will definitely welcome us!"
...How long does it take for a silver dragon to have a nest? If it is more than a year, and the dragon is in good health and does not suffer from nausea, vomiting, pregnancy-induced hypertension, and gestational diabetes, it will be really boring to be locked in a nest...
There must be a way before the car reaches the mountain. The worst case scenario is to go back and hold the paper and apply for project funds from the Magic Council. The research on electrocardiogram was temporarily stuck in a bottleneck. Grete held his chin and thought for a moment, put aside his thoughts, and raised his fingers to the Necromancer.
:
"Do me a favor and move the rabbit over."
Leon put his backhand on the car board behind him, squirming, squirming, and moved over with the rabbit. Cerira moved forward a few times, stared at the rabbit she had just rescued, and then looked at Grete:
"...What are you going to do? You're not going to have a dissection again, are you?"
"We won't do a dissection this time." Gretel had a smile on his face, but his eyes were extremely solemn. He held down the rabbit's right hind leg with his left hand, turned out the blade with his right hand, and lightly prepared the skin. The index and middle fingers of his right hand came together and moved up the rabbit's groin.
He groped back and felt the vigorous beating of the femoral artery.
It’s here!
As soon as he raised his hand, [Magic Trick] accurately stained the femoral artery with color. After cleaning with iodine and alcohol for three times, [Delaying Pain] fell down.
"Serila, don't move!"
As he ordered, he touched the space bag, and the sealed syringe with the glass box fell into the palm of his hand. Before anyone could react, Grete unpacked the package, took out the syringe, aligned the needle tip with the marked position, and inserted it downward at a 45-degree angle.
.
The silver dragon girl took a small breath. She glanced at Gretel quickly and quickly covered her lips:
Don't interrupt at this time! If the sound gets too loud, Grete's hand will shake, and the rabbit will bleed again!
Fortunately, the needle only advanced a little and stopped. Grete pulled back the syringe slightly and saw the blood flowing out from the end of the needle. His hand shook, magic power surged out, and he immediately removed the syringe barrel. Cerira breathed a sigh of relief.
He raised his fingertips, the white light flickered gently, and he turned his head to look at Grete inquiringly:
are you done?
Do you want help with treatment?
Gretel lowered his head and did not look at her. He put down the syringe and patted the space bag again, and a handful of seeds fell into his hand. Soon, a green vine swayed in the wind, holding a strand thinner than a hair.
The silver wire silently penetrated the needle tube.
Grete pursed her lips tightly and focused her eyes. She took out the [Endless Ink Pen] with her left hand and stuffed it under the rabbit. With her right hand, she pushed the vine forward. It went in, it went in, the shadow on [Detect Magic] showed
You have to understand that the vine has passed through the needle and entered the femoral artery!
Now there is no need to insert the catheter, so the puncture needle does not need to be withdrawn - just right, there is no need to try every means to find the catheter sheath. Next, the vine carries the silver thread and goes up with all its strength!
Go against the direction of blood flow, enter the external iliac artery, enter the common iliac artery, enter the abdominal aorta, enter the thoracic aorta - make a bend along the aortic arch and go straight to the heart!
"It's inserted into the heart!" Cerela covered her lips tightly and pressed her fingertips on the top of her lips until they turned white. She was breathing rapidly and her eyes were wide open, as if the vine was not inserted into the rabbit's body, but into herself.
heart:
"Gretel, what are you doing? Are you going to kill it?"
"Shh! It won't die!"
It was just a catheter inserted into the heart! The pioneer of interventional surgery at that time inserted a urinary catheter into the heart through the median vein of the left elbow and took an X-ray. He was still alive and well!
****
That Dr. Forsman is so awesome... he did it himself and inserted it...