In my personal experience for a day procedure (gastroscopy) it was fentanyl + midazolam, although on another occasion for the same procedure they added ketamine for some reason.

In the latter case I actually remember more of the procedure - although I was completely detached and thought it lasted about a minute (it was a 10-15 min procedure). In that case I can recall having the tube removed and passing out what seems like instantly.

It's both. In smaller doses, anesthetics like propofol will leave you groggy but semi-awake and able to respond to commands. But you won't be able to form long term memories so you won't remember afterwards. This is "twilight sedation" and is what you usually get when you get a procedure like an endoscopy or colonscopy. You are somewhat awake so that you can help reposition yourself and stuff if they need you to.

In larger doses, propofol will completely eliminate consciousness. This is "general anesthesia" and what you get when you go in for a major surgical procedure. You are completely unresponsive to any stimuli.

There are levels in between these too. Consciousness is a spectrum.

As far as I know, propofol doesn't make you feel particularly good or block pain. It just kind of makes you go away. So in addition, at all levels of anesthesia, they also typically give you a narcotic like fentanyl so that you aren't suffering. They aren't just letting you scream in pain and then erasing the tape afterwards.

As someone who has had a couple of procedures where they pushed the fentanyl into the IV before the propofol, I can 100% assure that pain was the absolute last thing I was feeling. Hell, I was still high as a kite after the propofol wore off when I got home. I was sitting at the kitchen table with a bunch of metal recently unscrewed from my leg bones thinking about literally nothing in the world beyond, "holy fuck this eggnog is the best beverage I've ever had in my life I wish I could drink it forever".

No, it's just a creepypasta.

Before surgery, you're given an amnestic to help reduce immediate anxiety and avoid remembering going into the OR and getting prepped - which people don't generally enjoy.

Then you get the anesthesia, which puts you to sleep. They put you on a respirator, which - alongside helping your barely/non-working lungs - delivers a gaseous anesthesic to keep you asleep.

Because some reactions to pain are reflex, they may still work. And when you wake up, they don't want you to be in pain; especially if that's on the surgery table. So next, you get the analgesic opioids. Here you may also (if you didn't already) get paralytics to stop all muscle movement.

Rest assured that they are not YOLO-ing your pain and suffering. You are given a cocktail of drugs to make sure you are comfortable before, during, and after surgery.

In some cases. My first experience with my wife in an ER (there have been many!), the doc came up to us and said exactly this. They needed to reposition a broken bone so it could be put in a cast before surgery to rebuild the wrist could be scheduled. Since it would only take a few seconds, instead of anesthesia they would use a medication that would let her be aware of the process, but she would forget it almost immediately after.

That was about 20 years ago. To this day, the last thing she remembers is lying on the table and saying "OK, let's git-er-done" and the next 5-10 minutes are missing.

>The gist was that modern implementations suppress memory formation rather than induce unconsciousness. That you remain in some sense aware of what's happening but don't remember the experience.

That's called twilight anesthesia and it's used for some procedures, not others. Usually used for stuff like wisdom teeth extraction and colonoscopies. Anything "major" and you're getting general anesthesia. You can ask what type of anesthesia you will be receiving (twilight or general).

https://wikipedia.org/wiki/Twilight_anesthesia

No. As an aside, when you are younger they may elect to put you into a twilight level of sedation.

And that is how I saw the inside of my own beating heart at 10 while I was tied down and essentially naked in front of like 10+ adults.

Oh, and the contrast dye momentarily made me feel like I was being burnt alive from the inside out.

Partly correct.

The modern implementation is to use general anesthesia as little as necessary as it has numerous side-effects. Local anesthesia with improved selectivity is used if possible.

I also heard that. It was said by a physician (IIRC, from a Boston hospital), who was sitting in on Marvin Minsky's class at MIT, circa 2000.

It’s generally very quick, but I suppose not perfect as on one occasion, they had to give me some additional kind of injection because for some reason, I was still awake. The guy doing it seemed confused.

With whatever he did additionally, as he did it he goes:

“Let’s try this again, start counting back from 10”

I might have made it to 9 the second time around.

Does this mean they messed up the dosage or something? I’ve had the same guy since and it’s never happened again.

Same with me, check yourself for sleep apnea and "sugar crash" during sleep if you can...

Interestingly some medications like tadalafil restore my dreams... My smart watch also tells me the phases like remand deep have normal lengths. So I'm not sure why it is so rare for me to dream, but I suspect low glucose or oxygen may have something to do with it.

It's such a waste. You're there with all your personality and you're gone the next. It is quite bad. That's why I think religions came up with an idea of hell...

One may think, any existence is better than nothing.

Dying is generally pretty easy. It’s hardest on those left behind.

Missing out.