Ask Sword

'In the plateau environment, atmospheric pressure and oxygen partial pressure gradually decrease, and oxygen supply is obstructed, resulting in increased anaerobic metabolism of brain cells, decreased ATP production, dysfunction of brain cell membrane sodium ion pumps, intracellular sodium and water retention, and cytotoxic cerebral edema .

If the rescue cannot be performed in time, it will become a vicious cycle of [brain hypoxia-brain edema-increased intracranial pressure-cerebral circulation disorder-difficulty in blood oxygen diffusion-cerebral hypoxia]. '

Li Ang thought silently. High-altitude cerebral edema is more common in those who quickly enter the plateau above 4,000 meters. In the early stage, severe headache, vomiting, palpitation, shortness of breath, and unresponsiveness may turn into coma in severe cases.

The altitude of Chang'an is about 400-700 meters, while Taibai Mountain in the Qinling Mountains is more than 3,700 meters high. But the distance between the two places is two hundred miles, so it is impossible for this tattooed man to climb Taibai Mountain, suffer from altitude sickness, and then be transported back by a galloping horse.

If it is not a high mountain or plateau, it should be a low-pressure low-oxygen environment similar to the conditions of the high mountain and plateau.

For example, artificially manufactured low-pressure chambers, or using flying swords to fly rapidly into the air-this should also induce high-altitude cerebral edema.

However, Pu Liuxuan once mentioned that there is a strong wind above the surface of the earth, and it is raging all the time. The higher you go, the more dangerous the sky and earth wind will be.

Even solid armor made of fine steel, thrown into the high wind layer, will be twisted into mud in the blink of an eye.

No obvious trauma can be seen on the body surface of the tattooed man, and it should not be caused by his rapid flight.

Heterogeneous? spell? Or something else.

Li Ang thought for a moment, and didn't go into it anymore—Jiao Cheng and the others remained silent, obviously hiding a secret and unwilling to answer.

Here come the ice cubes!

Di Wu brought people with him, brought ice cubes and wooden barrels,

Not long after, the men who went to Dongshi to buy kelp and plaster also came back.

Crush big ice cubes, put them in bags, and cover his body and head.

Li Ang gave the order to ask Di Wu and others to cover the unconscious man's body with ice.

This can reduce the cerebral blood flow, reduce the brain metabolic rate, promote the recovery of injured brain cells, and relieve the vicious circle caused by hypoxia.

‘The treatment of high-altitude cerebral edema is to lower the altitude, rest in bed, and keep breathing unobstructed. Then came hypothermia and oxygen.

High-concentration and high-flow oxygen inhalation can correct the hypoxic state of the brain and break the vicious circle. '

Li Ang said silently, 'The problem is that there is no high-concentration oxygen.

Calcium peroxide, hydrogen peroxide, manganese dioxide, etc. cannot be done in a short period of time, while electrolysis of water requires continuous and stable electricity. '

The Lightning Talisman and Lightning Strike are both Talismans and spells in the Cloud Patrol Realm, and they don't seem to be stable enough. When enough high-concentration oxygen is produced, the day lily will be cold.

'There is only one last way, to use drugs to reduce intracranial pressure and improve cerebral circulation. '

Li Ang looked at the large amount of kelp bought by Jiao Cheng's men.

These kelp are all sun-dried, and there is a layer of white frost on the surface that looks a bit like mildew.

‘The white frost on the surface of dried kelp is actually mannitol, an isomer of sorbitol. Mannitol tastes similar to sucrose. It is one of the most commonly used drugs for the rescue of brain diseases. After injection, it can quickly increase the plasma osmotic pressure, make the water in the tissue enter the blood vessels, thereby reducing intracranial pressure and intraocular pressure, and relieve cerebral edema. '

The information about mannitol flashed in Li Ang's mind, and asked Jiao Cheng's men to cover the wooden barrel with several layers of washed gauze,

Then wash the kelp with water, scrape off the hoarfrost on it, and pour the water with the hoarfrost into the barrel.

The gauze plays the role of the first layer of filtration, filtering the sand and gravel dirt on the surface of the kelp,

The second step is flocculation.

Li Ang opened the gauze covering the barrel, wrapped the stick with plaster, and put the stick into the barrel for stirring.

The best flocculant should be chitosan or carboxymethyl chitosan, no matter how aluminum sulfate or iron sulfate is, it can absorb and separate colloids.

Let's use the plaster alive.

Almost done.

Li Ang stirred for more than seven minutes. Seeing that the solution gradually precipitated and became clear, he stopped stirring.

After a few minutes, the turbidity settled down, and the solution in the bucket was static and separated.

Li Ang brought a ceramic bottle and filled it with the supernatant.

The standard for treating cerebral edema is intravenous infusion of 20% mannitol.

And the solubility of mannitol in it may be about 2%-2.5%, which is far from the concentration and hygienic standard of intravenous infusion. The quality is not enough, but the quantity is enough. Drinking is enough.

Li Ang asked someone to pour the solution in the bottle into the unconscious man's mouth,

At the same time, people continued to change the ice pack on the unconscious man, and then stood by and waited.

After an unknown amount of time, the tattooed man finally opened his eyes, looked to the side weakly, and tried to remove the cold ice pack covering his body.

Seeing that the other party regained consciousness, the cerebral edema was temporarily relieved,

Li Ang turned to look at Jiao Cheng, and said calmly: He wakes up, and he will lie flat for seven days. If the symptoms worsen, feed him the filtered kelp soaking solution with the method I just did. Don't drink too much, or you will die if you drink too much. .

Now, it's time to deliver on your promise.

The comatose man is the minion of this scumbag, Jiaocheng. The sequelae of cerebral edema, recovery after recovery, and diarrhea caused by oral mannitol are completely out of Li Ang's consideration.

Jiao Cheng looked away from the unconscious man and nodded towards Li Ang, then the bald-headed Di Wu led Li Ang out of the room and walked upstairs.

You leave too.

After Li Ang left, Jiao Cheng waved his hands to the people in the room, and pushed everyone back, including the two sword masters.

He walked to the hospital bed of the tattooed man, held his hand tightly, his eyes sparkled, and said in a low voice, Sanlang, tell me, what did you see in the tomb of the sword fairy under the ghost city of Chang'an? .”

————

Sunrise.

Go out and talk.

In the upstairs room, Li Ang raised his hand to stop Song Shaoyuan, led him and You Duzhi out of the pavilion under the leadership of Di Wu, and saw Wu Qiqi who had been staying in the open space in the courtyard.

Mr. Li Xiaolang.

Seeing Li Ang, Wu Shiqi immediately stood up from the stone, and cupped his hands more respectfully.

He was not surprised that Li Ang was able to leave the pavilion safely, but he was surprised that he was able to walk out with Song Shaoyuan and You Duzhi at the same time—you must know that You Xiao is the cash cow of Lianhualou,

And her attempt to abscond definitely touched Jiao Cheng's Ni Lin.

Li Ang was able to take the two of them away safely.

Li Ang didn't care about Wu Shiqi's dazed surprise, and cupped his hands at him, Brother Wu, thank you very much this time.

ah--

Wu Shiqi came back to his senses, hurriedly cupped his hands to return the salute, and said repeatedly, Don't dare, the next step is just to lead the way.

Mr. Li Xiaolang, we are now settled.

Di Wu looked at Li Ang with flickering eyes, and the implied meaning was very obvious - nothing happened in the attic today.

Well, when the time comes, I will send the rest of the money and it will be settled.

Li Ang nodded indifferently, and led the three of them out of Pingkangfang.

Wu Shiqi left first on the grounds that he wanted to perform the official duties of a bad person.

Song Shaoyuan and You Duzhi stood in front of the wall of Pingkangfang, feeling the warm sunshine covering their bodies,

The despair and helplessness in the attic house an hour ago was like a dream.

It seems like a lifetime away.

Sunrise,

Song Shaoyuan turned around to look at Li Ang, bowed to the end, and sincerely thanked him: This time... please trouble you. I will go to the bank when I go back...

My brother, why are you talking so much. Even for Aunt Song's sake, I can't leave you alone.

Li Ang waved his hand casually, glanced at You Xiao who was standing beside him, You know, I have already made an agreement with Jiao Cheng that you have left Lianhualou and you can move out.

After a while, I was completely freed from slavery, and I was able to ask someone to go to the Lianhua Building to bring out my daily necessities.

If there is a personal maid who wants to redeem her body, it can also be discussed.

You Duzhi thanked Li Ang in every possible way, and after being dissuaded by Li Ang, he took a half step back and leaned on Song Shaoyuan gently like a bird.

The two exchanged glances, and the love in their eyes almost melted each other.

'Aunt Song, I was wrong, Chang'an is really a devil's lair that eats people without spitting out their bones'

Li Ang watched Song Shaoyuan being completely captured by love, shook his head helplessly, called a carriage, took the two of them back to the West Market, and informed Yang Yu and other students who were still waiting in the West Market that the matter had subsided.

Also let Chai Cuiqiao at home not to worry.

Li Ang took the reins of the horse by himself, and walked westward slowly, thinking about things casually.

The method for extracting mannitol from kelp under modern industrial conditions,

It has to go through complex steps such as soaking, purification, acidification and oxidation, iodine extraction, evaporation, concentration, cooling and crystallization, centrifugal separation, and drying.

The mannitol solution he just extracted with kelp soaking liquid is just a simple medicine under simple conditions.

Modern medicine is medicine based on modern science and modern industry.

Mannitol is already so difficult to obtain, and other emergency medicines such as epinephrine, cedilan, sodium nitroprusside, and lidocaine are even more difficult to obtain.

The silver bell-like laughter of children interrupted Li Ang's thoughts.

I saw a group of children aged seven or eight years old, beating the tops of different colors with ropes in the open space, causing the tops to collide with each other.

Spinning top battle, right?

The corner of Li Ang's mouth raised slightly, inexplicably thinking of the childish behavior of secretly adding weights to the top to increase the lethality in the top battle.

etc.

spinning top.

Centrifugal force? !

Li Ang's eyes suddenly lit up, and he suddenly thought of something.

Duke Yan's illness was cured.