A Hospital in Another World? Chapter 1093: A Legendary Nature-Based Biological Dialysis Machine?!

Tumor lysis syndrome?

A massive number of necrotic cells rupture on the spot, releasing cytoplasm into the body, increasing the burden on the kidneys, leading to renal failure?

This situation didn't require Garrett to think too much. There was a treatment that could perfectly match this condition:

Go for dialysis!

Acute renal failure? Dialysis!

Chronic renal failure? Dialysis!

Acute drug poisoning? Toxic poisoning? In any case, dialysis was the answer!

Hemodialysis is also known as an artificial kidney, originally designed to use this artificially created kidney to take over the functions of a real kidney!

Of course, a dialysis machine is not easy to manufacture. The semi-permeable membrane, dialysis fluid, blood pump, heparin pump, and various control and monitoring devices—each one presents a major hurdle to overcome.

Naturally, Garrett didn't expect to overcome all these hurdles by hand. Just a semi-permeable membrane alone could drive him to despair.

But then again, isn't Elder Fahim here?

A legend!

A nature-based legend!

One who has walked through the long years, seen much, knows much, and has been stationed in the Bountiful Forest for many years, with exceptional knowledge of the rich species in the rainforest—a legendary elf!

If creating a biological semi-permeable membrane in this world falls under the field of "biological alchemy," then Elder Fahim is probably at an academician level in this field.

Except…

"What is a semi-permeable membrane?"

"Uh..."

Garrett scratched his head, feeling conflicted and hesitant.

A semi-permeable membrane is a thin membrane that only allows certain molecules and ions to diffuse through. Generally speaking, semi-permeable membranes only allow ions and small molecules to pass through, while larger biological molecules cannot freely pass through.

The semi-permeable membrane used in a hemodialysis machine only permits molecules with a molecular weight below 15,000 to pass through, while larger molecules above 35,000 cannot.

Therefore, proteins, bacteria, viruses, and blood cells cannot pass through the semi-permeable membrane…

—Great, now I have to explain to Elder Fahim what a molecule is and what molecular weight means.

"Uh… it's like a membrane, or a filter… big things can't get through, only very small things can…"

"How big? How small?"

"Well…"

Garrett deeply appreciated the value of the nine-year compulsory education system, or rather, the 12-year basic education system.

A person who has completed high school can generally understand what a semi-permeable membrane is without much difficulty.

—But here, even though Elder Fahim is a legendary master, I still have to rack my brains to explain the most basic concepts…

He flipped through papers, starting with atoms, then moving on to molecules, then ions. From the smallest potassium, sodium, and calcium ions to macromolecules like proteins...

Oh, and there was also concentration, osmotic pressure, and more. Everything had to be explained clearly.

Luckily, as a former emergency room doctor, explaining the causes of diseases and treatment methods to patients and their families, who lacked complete basic education, was a fundamental skill.

As he explained, he drew diagrams and used various analogies—from over-fertilizing plants and burning their roots to soaking hands in water for too long and causing wrinkling.

As he explained, Elder Fahim's frown gradually relaxed:

"Oh, so that's it! Isn't this just like plant roots? Absorbing water and the things you mentioned—nitrogen, phosphorus, potassium—from the soil, then transporting them from the roots to the trunk, and then from the trunk to the branches and leaves…"

Garrett nodded vigorously. That's right! The epidermis of plant roots is like a semi-permeable membrane! It uses the concentration difference on both sides to absorb water into the plant…

Elder, I'm so glad you understood!

"Since that's the case, let me go and have a discussion with some plants… let me think, who should I talk to…"

Garrett watched wide-eyed as Elder Fahim got up and left, swaying as he walked out of the lab. Wait, Elder Fahim, what do you mean by having a discussion with plants?

Are you planning to have a plant, or even a magical plant, evolve on the spot and create a semi-permeable membrane for you?

Garrett was also very curious about how a legendary nature master would achieve this, so he couldn't help but follow him. He followed silently, watching from behind:

Elder Fahim's pace was neither too fast nor too slow. He would stop from time to time to touch the grass on the ground, then change direction and touch a bush in the shade.

Nodding, shaking his head, nodding again, shaking his head again, before unknowingly heading deeper into the jungle.

Garrett followed behind, stepping high and low. Although Elder Fahim's pace seemed slow, and he kept stopping and starting, Garrett found himself panting and his steps growing heavier after just half an hour.

Seeing that the Elder had no intention of stopping, Garrett gritted his teeth, transformed into a black bear, and lumbered along. Ah, thank goodness I learned shapeshifting from Aishe Moon Song; walking through the forest as a bear is much more convenient…

Elder Fahim wandered and wandered, stopping by a tree, bowing his head, meditating, and shaking his head; then grabbing a vine, bowing his head, meditating, and shaking his head again. Seeing Garrett catch up, he smiled and waved at him:

"Garrett, you've really given me a tough problem! These plants that could produce a semi-permeable membrane are either too large to move, or too small with poor filtration capabilities and slow speed. Ah, what a headache…"

Garrett: "…Grr, grr, grr…"

If you're going to discuss this topic, I…

Won't have much to contribute…

"Oh dear, your shapeshifting magic can't maintain your animal form while speaking? That's not good; it could cause big problems…"

Garrett: "Grr… Uh-huh! Uh-huh!"

"Speaking of which, there was once an elf who wanted to find an animal companion, so she went into the forest. She saw a black bear, tall and with glossy fur, and thought it matched her idea perfectly, so she jumped on its back and tried to tame it…"

At this point, he burst into laughter. Garrett looked at him, confused:

"Grr?"

"Ah, this is an old joke among elves; you haven't heard it. Actually, that black bear was a nature servant who had transformed into a bear to stroll around the forest…"

Garrett: "..."

Elder, I have a feeling you're telling something not suitable for young ears!

He simply reverted to human form and walked up to the Elder. Standing on tiptoe, he looked around:

"Elder, if we're looking for suitable plants, why not check by the pond? I remember when Nevis was working on a drinking water purification project, the Nature Sect hastened the growth of a batch of aquatic plants… their filtration and purification abilities are quite strong…"

"That's what we're looking for…"

Two hours later, Garrett was clumsily guiding a large floating disc—more like a lotus tub—next to Elder Fahim.

The floating disc held a half-tub of silt and a tub of water with two cattails, a water lily, and some plants he couldn't identify. All of these were plants that Elder Fahim had communicated with and deemed roughly suitable for attempting dialysis:

"Garrett, you're doing it wrong." Elder Fahim gave Garrett a look of disappointment:

"You can't cast spells in bear form? Your control is too weak; at the very least, you should have some basic spellcasting ability! If you find yourself surrounded by enemies, you should be able to run, cast healing spells, and raise shields all at once!"

Garrett's response was to summon a Phantom Steed and climb onto it.

"Elder, I know, I'll practice later…" he grumbled:

"Later, later! You see, I'm a healer; I have so many things to research…"

The aquatic plants swayed as Garrett brought them back to the lab. Under Garrett's expectant gaze, a cattail shot up, grew leaves, and a tender green stalk stretched out, reaching towards the cage of the experimental animal...

"Go ahead, give it a try."

The Elder directed. Garrett was stunned:

"How?"

"Use this tender stalk! Insert it and see if it can filter…"

"…Wait, Elder, hold on, where's the dialysis fluid? I haven't prepared the dialysis fluid yet!"

"Let it handle the dialysis fluid! Let's try it first…"

Garrett forced his brain to work, prompting two vines to grow. One connected to the puncture needle, the other to the tender stalk of the cattail, merging with it.

The other vine attached to the other end of the cattail stalk, waiting for the filtered blood to flow out and into the rabbit's vein. The Elder, Garrett, Cirilla, and Linga all gathered around the rabbit, watching intently:

"…It's not working. The blood cells can't pass through. Elder, the micro-pores inside the stalk need to be larger."

Elder Fahim shook his head, touched the cattail, and a green light flashed. The cattail seemed to change, though it was hard to tell, but there was indeed a trace of fresh red blood flowing through the vine leading to the vein.

"…It's not working. It can't absorb the substances you need."

This time, Elder Fahim shook his head on his own. He touched the cattail again, and with a flash of green light, the

 tender stalk of the cattail thickened, and liquid began to flow inside.

"It's not working; the blood is starting to clot… Elder, can the cattail accept an anti-coagulation spell? You don't know?… I'll try one then…"

Cattail, dialysis, failed.

Water lily, dialysis, failed.

Duckweed, dialysis, failed.

Water hyacinth, dialysis, failed…

"These plants are too weak." After trying every aquatic plant he could think of, Elder Fahim sat on the ground in frustration, his white beard wet:

"Weak plants can't communicate well with me and can't handle too many changes… I need stronger plants… I need higher-level magical plants…"

"Then, Elder…" Garrett quietly raised his oak staff:

"How about using this?"

"You're too weak." Elder Fahim glanced at it and turned away:

"It's too late today, and I'm exhausted. Tomorrow morning, I'll have a talk with the ancient tree…"

The next morning, Garrett watched in amazement as the ancient tree shook its branches, grew a tender green shoot, and inserted it into the rabbit's abdomen.