'In a 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, brain cell membrane sodium ion pump dysfunction, and intracellular sodium and water retention, causing cytotoxicity to the brain.
Edema.
If timely rescue is not possible, it will become a vicious cycle of [cerebral hypoxia-cerebral 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 people who quickly enter a plateau of more than 4,000 meters. In the early stage, they suffer from severe headache, vomiting, palpitation, shortness of breath, and slow reaction. In severe cases, it can turn into coma.
The altitude of Chang'an is about 400-700 meters, and the Taibai Mountain in the Qinling Mountains is more than 3,700 meters high. But the two places are two hundred miles apart. It is impossible for this tattooed man to climb Taibai Mountain, suffer from altitude sickness, and then gallop.
Ship it back.
If it's not a mountain or a plateau, it should be a low-pressure, low-oxygen environment similar to the conditions on the mountains and plateaus.
For example, artificially created low-pressure chambers, or flying into the air quickly with flying swords - this should also induce high-altitude cerebral edema.
However, Pu Liuxuan once mentioned that there are strong winds high in the sky above the earth's surface, which are blowing and raging all the time. The higher you go, the more dangerous the strong winds of heaven and earth are.
Even strong armor made of fine steel will be crushed into mud in the blink of an eye if thrown into the strong wind layer.
No obvious trauma can be seen on the tattooed man's body, and it probably wasn't caused by rapid flight.
Alien? Magic? Or something else...
Li Ang thought for a moment and stopped delving into it - Jiao Cheng and others remained silent, obviously hiding secrets and unwilling to answer.
"The ice cubes are here!"
Di Wu and others brought ice cubes and wooden barrels.
Not long after, the men who went to Dongshi to buy kelp and gypsum also came back.
"Smash the big ice cubes, put them in bags, and cover his body and head."
Li Ang gave the order and asked Di Wu and others to cover the unconscious man's body with ice.
This can reduce cerebral blood flow, reduce brain metabolic rate, promote the recovery of injured brain cells, and alleviate the vicious cycle caused by hypoxia.
‘The treatment for high-altitude cerebral edema is to first lower the altitude, rest in bed, and maintain smooth breathing. Then there is hypothermia treatment and oxygen inhalation.
High-concentration and high-flow oxygen inhalation can correct the hypoxic state of the brain and break the vicious cycle.’
Li Ang said silently, 'The problem is that there is no high concentration of oxygen now.
Calcium peroxide, hydrogen peroxide, manganese dioxide, etc. cannot be obtained in a short time, and the electrolyzed water method requires continuous and stable electricity.’
The lightning talisman and the lightning strike technique are both talismans and techniques of the Patrolling Cloud Realm, and they don't seem to be stable enough. When enough high-concentration oxygen is produced, the day lilies are cold.
‘The only last resort is 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 have been dried in the sun, and there is a layer of white frost on the surface that looks a bit like mildew.
'The white frost precipitated 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 to rescue brain diseases. It can quickly increase plasma osmotic pressure after injection.
, allowing water in the tissue to enter the blood vessels, thereby reducing intracranial pressure and intraocular pressure, and relieving cerebral edema.'
Information about mannitol flashed through Li Ang's mind, and he asked Jiao Cheng's men to cover the barrel with several layers of cleaned gauze.
Then wash the kelp with water, scrape off the white frost on it, and pour the water melted with white frost into the wooden barrel.
The gauze acts as the first layer of filtration, filtering the sand and dirt on the surface of the kelp.
The second step is flocculation.
Li Ang opened the gauze covering the bucket, wrapped the stick with plaster, and then put the stick into the bucket for stirring.
The best flocculant should be chitosan or carboxymethyl chitosan, or aluminum sulfate or iron sulfate, which can adsorb and separate colloids.
Gypsum...let's make do with it.
"It's almost done."
Li Ang stirred for more than seven minutes. When he saw that the solution gradually settled and became clear, he stopped stirring.
After a few minutes, the turbidity settled down, and the solution in the barrel stratified.
Li Ang brought a ceramic bottle and filled it with the supernatant.
The standard treatment for cerebral edema is intravenous infusion of 20% mannitol.
The solubility of mannitol in this may be about 2%-2.5%, which is far from the concentration and hygienic standards for intravenous infusion. The quality is not enough, but the quantity is enough, and it is enough to drink.
Li Ang asked someone to pour the solution in the bottle into the unconscious man's mouth.
At the same time, people continued to replace the ice pack on the unconscious man, and then stood aside and started waiting.
After an unknown amount of time, the tattooed man finally opened his eyes and looked weakly to the side, trying 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: "When he wakes up, keep lying down for seven days. If the symptoms worsen, feed him the filtered kelp soaking liquid using the method I just used. Don't drink too much, or you will die if you drink too much.
.
Now, it's time to fulfill your promise."
The comatose man is a pawn of the scumbag Jiao Cheng. The sequelae of cerebral edema, recovery and diarrhea caused by oral administration of mannitol are completely outside the scope of Li Ang's consideration.
Jiao Cheng looked away from the unconscious man and nodded towards Li Ang. The bald Di Wu turned around and led Li Ang out of the house and walked upstairs.
"You also leave."
After Li Ang left, Jiao Cheng waved his hands to all the subordinates in the room, rejecting everyone including the two swordsmen.
He walked to the tattooed man's hospital bed, held the other man's hand tightly, his eyes flashed, and lowered his voice: "Sanlang, tell me, what did you see in the Sword Immortal's Tomb below the Chang'an Ghost Market?
..."
————
"The sun rises..."
"Let's talk after we get out."
In the room upstairs, Li Ang raised his hand to stop Song Shaoyuan, and led him and You Douzhi out of the pavilion under the leadership of Di Wu, where he met Wu Shiqi who had been staying in the open space in the courtyard.
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"Li Xiaolangjun."
When Wu Shiqi saw Li Ang, he immediately stood up from the stone and bowed his hands more respectfully.
He was not surprised that Li Ang was able to leave the pavilion safely. What was surprising was that he was able to bring Song Shaoyuan and You Douzhi out at the same time - you know that You Xiao is the money tree of Lianhua Tower.
And her attempt to escape definitely touched Jiao Cheng's back.
Li Ang... was able to take the two of them away safely...
Li Ang didn't pay attention to Wu Shiqi's trance and surprise, and cupped his hand towards him, "Brother Wu, thank you very much this time."
"Ah——"
Wu Shiqi came back to his senses, hurriedly returned the favor, and said repeatedly, "Don't you dare, I'm just leading the way."
"Li Xiaolangjun, we are now settled."
Di Wu looked at Li Ang with twinkling eyes, and the underlying meaning was very obvious - nothing happened in the attic today.
"Well, I will send you the remaining money then and the settlement will be settled."
Li Ang nodded calmly and led the three of them out of Pingkangfang.
Wu Shiqi left first on the grounds that he had to perform official duties as a bad person.
Song Shaoyuan and You Douzhi stood in front of the wall of Pingkangfang, feeling the warm sunshine covering their bodies.
The despair and helplessness in the pavilion an hour ago was like a dream.
It feels like a world away.
"The sun rises,"
Song Shaoyuan turned around and looked at Li Ang, bowed to the end, and said sincerely and gratefully: "This time... I'm sorry to trouble you. I'll go to the bank when I get back..."
"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 and glanced at You Xiao who was standing aside, "You know, I have made an agreement with Jiao Cheng that you have separated from Lianhua Building and you can move out.
After waiting for a while, I will be completely freed from slavery, and I can ask someone to go to Lianhua Building to bring out my daily necessities.
If you have a personal maid or something like that and want to redeem yourself, we can also discuss it."
You Douzhi thanked Li Ang in every possible way. After being dissuaded by Li Ang, he took a half step back and leaned on Song Shaoyuan as gently as a bird clinging to someone.
The two looked at each other with affection, and the love in their eyes almost melted each other.
'Aunt Song, I was wrong. Chang'an is really a devil's cave that eats people without spitting out their bones...'
Li Ang looked at Song Shaoyuan being completely captured by love, shook his head helplessly, called a carriage, and took the two people back to the West Market to inform Yang Yu and other classmates who were still waiting in the West Market to tell them that the matter had calmed down.<
/p>
Let Chai Cuiqiao at home not worry.
Li Ang held the reins of the horse and walked slowly to the west, thinking about things casually.
Method for extracting mannitol from kelp under modern industrial conditions,
It needs to go through complex steps such as soaking, purification, acidification and oxidation, iodine extraction, evaporation, concentration, cooling and crystallization, centrifugation, drying and so on.
The mannitol solution he just extracted using kelp soaking liquid is just a crude medicine under crude conditions.
Modern medicine is medicine based on modern science and modern industry.
Mannitol is already so difficult to obtain, and other emergency drugs 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 seven or eight-year-old children beating tops of different colors with ropes in the open space, making the tops collide with each other.
Gyro battle, right?
The corner of Li Ang's mouth raised slightly, and he inexplicably thought of secretly adding weights to the top to increase the lethality in the top battle.
Wait...
Top...
Centrifugal force?!
Li Ang's eyes suddenly lit up, and he suddenly thought of something.
Duke Yan's illness can be cured.
This chapter has been completed!