On your recent post for Vivisections
Do you have any more advice or maybe a quick scene lay out on how you'd accurately describe and show it? I've not seen many people explain this before I'd love to know more!
Permission to infodump?? awesome :D
Because it's on topic here, there are a few blogs I think need a mention because they have AMAZING medical/torture writing advice (@scripttorture and @justkidneying )
You didn't ask whether the character lives or dies, I don't know which you want so here's info on both scenarios:
Dying:
First off, without anesthesia, the pain alone would likely lead to a thing called Neurogenic Shock, which will in turn cause a BP drop and organ failure among other things. Your character will likely be breathing quickly, appear pale, have a rapid pulse, and be confused if they are still conscious. And yelling in pain of course.
For death due to blood loss: it's hard *not* to hit a major blood vessel if you're flaying someone open neck to groin, and that will also lead to quick death without immediate treatment. Cautery (using electricity to burn an area, stopping bleeding) will work on smaller bleeding but major blood vessels not so much. Symptoms are similar to shock: clammy/pale skin, thready/weak/rapid pulse, loss of consciousness.
Other: you can also risk damaging organs (someone being vivisected probably isn't going to be staying very still, even restrained, and one slip of a scalpel and oops, that's the aorta...) A punctured lung could lead to pneumo/hemothorax (air/blood in the chest cavity (pleural space), where it shouldn't be) causing respiratory distress—and then shock, and without treatment—death. If the heart is damaged, death would be near instant. Other organs like the liver, kidneys, bowels, spleen etc are pretty big bleeders, so see my Blood Loss section.
Sepsis: If they don't die immediately, sepsis is a big risk, as even in sterile environments you can't completely prevent it. Sepsis is when an infection reaches the bloodstream and is very serious. I imagine whoever is vivisecting the character probably wouldn't care too much about using sterile technique, so you can bet on an infection happening. This can set in within hours or days. Symptoms include high fever, pain, confusion/delirium, sweaty/clammy skin, low blood pressure.
Now, if you want them to live?
Surviving:
If the vivisectionist wants their patient/victim to survive, they'd need a lot of materials. Like any major surgery you'd need blood products, fluids, antibiotics, ligatures, and a way to keep the pain (somewhat) under control. Alcohol has been used in the past for similar procedures, but you could also just opt for a dose of opioids.
Antibiotics are necessary, opening someone up like that is a MAJOR risk (see "Sepsis").
I imagine they'd also somewhat monitor the character's vitals. They'd also probably have a few assistants to help with similar smaller tasks like that—stopping bleeding or handing tools, etc.
Closing the wound: Stitching someone up from such an event would be a lot of work, as you have to close many skin layers (muscle, fat, and the surface skin) and bandage it.
If you don't want to stitch them up immediately, a wound vac (negative pressure wound therapy) would be a good option. Doctors use these in cases of things like compartment syndrome. It is used when you cannot close someone back up right away.
Bandages and proper wound care are also important, you'd need to change the bandages every few hours for the first few days as deep wounds tend to produce a lot of fluids (called "exudate.") Sometimes doctors place drains to help drain away this fluid faster.
All in all, Healing from this would take months, not to mention the psychological trauma from all of this.
The scene:
Writing these scenes is honestly so variable so here's a few thoughts of mine:
You could describe the environment: (cliche, but cold metal table? Harsh lighting? Straps? A table with sharp scary-looking objects on it? How about the scent of disinfectant (or its absence).
The initial sensation would be the biggest to focus on: does the vivisectionist take their time? (pressure before pain?) shock as nerves fire as they are severed (lightning sensation shooting upwards), and the body’s instinctive flinch or freeze. Initially screaming, swearing? Sweating, rapid breathing, muscle spasms, or even vomiting as the body tries to cope?
Smells: Metallic tang of a large amount of blood (I personally HATE this smell, it's like having a penny in your mouth, or if you've ever used a metal scrubber to clean a pan, it smells kind of like that.), burning flesh (if they use cauterization) etc
If the character is partially sedated for it, keep in mind they will still react to pain, albeit sluggishly.
I hope this helps!