It's not that hard to open a hospital in another world, right?

Chapter 759 DC cardioversion?Why is it so difficult! (Red Comet Maswan rewards plus updates)
Gretel was happy and threw out the task of clinical experiments.

Let him stay up late—ah no, let him dictate the outline, and Tarling stay up late to write the experimental protocol, no problem;
Let him work hard in medical research to find out a cure for a certain disease, no problem, that's what he loves;
Let him grow bacteria, raise penicillin, and make vaccines. This is no problem. Although he is a clinical major, not a biology or pharmacy major, he can do it with gusto;

But, let him travel thousands of miles to go to the dwarf king's court, drill in that unsanitary big cave, measure the heartbeat, listen to breathing, take X-rays, and inject medicines for the dwarves every day, dozens of hundreds of times a day ?

NEVER!

This is what little doctors do!And it's a whole group of little doctors!These complicated and trivial things should be tasks that can be completed by one attending doctor with a group of residents and interns!
Well now, someone finally did it.Gretel hummed and went about her daily routine:

Study magic.

[Ray Deflection], [Any Door], [Shelter], especially the most important [Mystic Eye], you have to learn everything.Of course, all kinds of defensive magic, escape magic, and attack magic required by the teacher must also be practiced...

Gretel knew very well that the Lord of Thunder had tolerated him for a long time.Now that he is away from home, it is not easy to check his homework. If he returns from this trip, if he still can't learn a few magic spells, he may be hanged by the teacher and whipped.

The current progress is that the [Shelter] is proficient, and the size of the portable operating room has doubled;
[Biological location technique] I learned it, and now I can locate parasites, but the location of bacteria still needs to be studied;
[Any Door] is really a bit difficult. Gretel hasn't studied the magic of the space system much before, and he has to learn from [Teleportation Prediction] and [Analysis Portal].

If you want to practice before the teacher comes back, and practice to the teacher's satisfaction, you probably don't have to count on it.

"So Gretel, which one do you want to pick?"

Aurora buried her head in the spell list and asked without raising her head.It would be nice to have a high-level tower spirit. MOSS can at least project the list of spells collected by the Horn of Thunder and let them choose by themselves.

If it is some relatively low-level spells, you can also directly communicate with the Tower of Thunder through the tower spirit, and call the spell model for learning...

"I think it's better to learn attack spells." Gretel shrank his neck.The teacher's task is to be proficient in at least one of the attack magics of ice, fire, electricity, acid, force field, and sound wave.

As a magician, even if you are a medical spell, you don't need to use offensive magic, but you absolutely can't.In case of bad luck, when you need to teach an idiot a lesson, you must have two hands to control the situation, right?
"I think you don't need to choose the fire element." Aurora complained without hesitation.Gretel nodded silently: with pure oxygen and explosives, when he advanced to the fifth-level mage, he had pushed the power of the fireball technique to above the fourth level.

It is estimated that if the study of fire magic is temporarily postponed, the teacher will not do anything to him.Otherwise, there will be another "range of 200 meters, explosion radius of 300 meters", but it is not so lucky to have a teacher to save him.

"I don't think there is a need to rush to learn ice and acid." Gretel shrugged, "I don't think it's difficult to pile up the third-level spells to the fourth-level power."

For the cold ball, you can use liquid nitrogen as the casting material to harden the power; for the strong acid ball, you can also use aqua regia and hydrofluoric acid as the casting material respectively, and try to upgrade.

Gretel estimated that at the third to fourth stage, it is possible to upgrade to one level.

"So what are you going to choose?" Aurora turned her head and looked at him with bright eyes.The colorful light of the magic light screen fell on his face, and his cheeks were drawn into grids, which looked very strange:
"Force field? Sound wave? For force field, I can give some advice. Sound wave is really bad, and I am not familiar with sound wave. Why don't you just choose Thunderbolt? I am familiar with Thunderbolt! The Lord of Thunder is back, if you choose Electric Shock Ball, will be happy!"

Gretel himself also wanted to choose the Lightning branch.In any case, the output strength still has to be raised.He didn't want to encounter that "first time direct current cardioversion, I don't know how many joules the electric shock claw has".

What if there happens to be a patient with ventricular fibrillation?

Cardiac compression is really not as useful as electrical cardioversion!

Gretel was gearing up.With previous experience in dismantling magic configurations, Aurora's enthusiastic suggestions, and Archmage Carlisle for advice, he learned the fourth-order [Electric Ball] very easily.

But Aurora went crazy seeing the first day he started practicing.

"Clap!"

"fail."

"Clap!"

"Failed again."

"Clap!"

"It still failed..."

"Where did you fail?!" Aurora turned around, her cheeks were reflected by the blue and white electric light like a ghost, and the white light in her blue eyes danced:
"It's obviously very successful! The attack power and attack distance all meet the requirements! Except that the shot is too obvious, and it's easy to be spotted by the opponent—but the electric shock ball flies very fast. If they find it, they can't dodge it."

...I don't care if the shot is too obvious, after all, the possibility of me hitting someone in person is still a bit low.Gretel pointed to the measuring instrument that Aurora had used standing on the corner of the wall:

"The output intensity is too high, and the duration is a bit too long..."

"Output strength..." Aurora choked on her throat, clutched her chest, and coughed for a long time.After finally catching his breath, he immediately lowered his voice and yelled at Gretel:

"Of course the output power must be high! This is an attack spell! Attack spell! What are you going to do if you don't increase the output power!"

He stopped suddenly and looked around quickly.Thank goodness, this is in my mage's tower, and there is no one else around.Otherwise, if a follower talks to the boss like this, once it gets out, the entire Thunder Corner will be laughed at.

Aurora took a quick breath and continued to spray people:
"Any lightning mage wants to be able to summon lightning at will, and be able to summon lightning that is as powerful as thunder from the sky. If you lower its output intensity and shorten its duration, what exactly is the picture?"

"...Your words, the teacher will definitely not agree." Gretel complained back with a straight face.

The Lord of Thunder has already played lightning well. As long as you see the docile appearance of Lightning beside him, you can imagine that control is definitely the right direction for the development of the Thunder system.

Besides, Senior Sister Philbi can already feel the flow of electrons, and it is estimated that it is not far from precise control of electrons.Aurora, are you sure you don't want to go in the fine direction?

The title of Lord of Thunder made Aurora shrink back.Gretel briefly talked about the development direction of several big brothers, and he squatted silently to the corner. It seems that an illusory sign has been erected on his forehead:

I want to be quiet--

As for who Jing Jing is, that is another topic, not too important.

Gretel continued to concentrate and practice his electric spells.Direct current cardioversion is to transform the 60HZ alternating current into a high-voltage direct current of 4~7kVd, and discharge it to the heart within 2~4ms, and the power can reach 360~400 joules.

What he needs to do now is to disassemble the task and try the same thing.It is not difficult to reduce the power, at most use relatively low-level electric spells, but reduce the duration...

“2到4毫秒……2到4毫秒……”格雷特嘟哝着继续练习。他把四阶的【电击之球】，切换到1阶的【电爪】，继续死命练习控制：

freed!

Finish!

Duration, 0.5 seconds, which is 500 milliseconds.

freed!

Finish!

Duration, 0.3 seconds.

freed!

Finish!

Duration, 0.22 seconds.

Gretel thought for a while, and felt that he couldn't continue practicing like this.He bowed his head to disassemble the spell model, combined with the "Encyclopedia of Runes" given by the teacher, and the configuration disassembled in his past research, and picked out a module about the duration from it:

Increase--

reduce--

Increase--

reduce--

After tossing back and forth, I drew seven or eight spell configurations, and then tested again.This time, the duration was gratifyingly reduced to 0.01 second, or 10 milliseconds.

it works!

Add a configuration to control the duration, automatically control the duration of the spell, effective!Then, the next step is to minimize the duration of this magic——

Gretel continued to roll up his sleeves and began to toss.After three consecutive days of testing and modification, he finally controlled the casting time of lightning within 2 milliseconds.Well, next, it is time to grasp the timing of casting the spell.

Gretel climbed to the top floor of the Mage Tower, set up a receiving board next to the MOSS, and connected it to the core of the Mage Tower.Taking a deep breath, he told Taring:

"MOSS, you release the electrocardiogram stored before. I will release the electric claws according to the rhythm. Please help me record it. The time point of each electric claw passing is marked on the electrocardiogram."

"Okay, boss." MOSS replied sternly.The light curtain flew up, and the R wave, P wave, Q wave, and S wave of the electrocardiogram moved forward wave by wave according to a fixed rhythm.

Gretel stared at the electrocardiogram on the light screen, his mental power hooked the magic configuration of the electric claw, and with a slight movement, the magic flew out——

With a "crack", the blue-white electric light hit the receiving board lightly, and was sucked in silently by the center of the mage tower.

On the light screen, an eye-catching red dot instantly appeared.

Gretel looked over impatiently.Very good, not to mention accurate, at least it is a thousand miles away.With current flowing through the heart at this time point, defibrillation is impossible, but it is very possible to make the heart rhythm even more abnormal...

"Again!" That time just now, it was just my reaction was slow!Concentrate, calculate the amount in advance, maybe you will succeed!

"Crackling."

"Crackling."

"Crackling."

"Crackling-"

Very good, on the electrocardiogram waveform, the red dots are scattered and randomly distributed.Two more times fell in the vulnerable period of the ventricle, without ventricular fibrillation, they were able to beat ventricular fibrillation!

"Ah—why is direct current cardioversion so difficult..."

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(End of this chapter)