The Stages of Anesthesia: The Basics (Guedel's Classificaiton)

This video is meant to be a brief introduction to the stages of anesthesia.

[mohachelsea]

Thank you very much
I've learned that at stage 3
The pupil is constricted
But at stage 2 and 4
The pupil is dilated and because of that we use corneal reflex to determine whether the patient is at stage 2 or stage 4
Stage 2: there is corneal reflex
Stage 4: there is no corneal reflex
Thank you again
And great job

[anniemshine]

thank you so much for this. i was struggling to find a video that explained the stages and im so glad i found this. thank you so so much.

[QuickMedic]

I like this video! In practice, we rarely comment on the stages of anaesthesia, as there is a very blurred distinction between 'planes' now because of the rapid onset of the agents we used. Also - the planes are confounded when we use neuromuscular blockers). I believe Guedel described the planes when he was using VERY slow onset agents (ether, volatiles etc) rather than Propofol for example, that exerts its effects in one arm-brain-circulation time on injection! I go into more detail on anaesthetic practice on my YouTube channel if you're interested, but I think this is a GREAT introduction for medical and nursing students!

[kindredkate]

It is the summer of 2020. I am currently in quarantine. I am going into 10th grade next year. It is 1:42 AM. *_How_* and *_why_* am I here?

[nickydaviesnsdpharms]

whay did you miss out Midazolam at the begining? surly as a premed or precursor to the propofol midazolam is given?

[sarahpowell]

Clear and concise, very informative thank you .

[JessicaJohnson-dwcv]

Well if the heart does stop what would you do?

[pacmanzz]

During the hyper excitability state during stage 2 of emergence, is a sudden increase in heart rate also attributed?

[euphoriamakings]

this was awesome i cant wait to start skool and become one

[carlosalfaro]

could you please post your references ?

[EMan-mler]

I do realize that waking up and going to stage 2, I was shaky and nauseated for a while (I puked 3 times). That was because while they were putting my cast on... I woke up and they had to quickly put me back to sleep temporarily. Then waking up finally. Does that affect your stability when going from stage 2 back to stage 3 then back in stage 2?

[jasonjackson]

Propofol without premed 1. Anxiety/ Burning vein 3. Feeling like there is not enough air/ dizzy 3
Relaxing/fall asleep
2. Voices telling me to wake up
1. Postoperative pain. Ketamine hallucinations. (everything looks like a huge, moving cubist painting) Whole body numbness for about 90 seconds then return of postoperative pain.9/10 Second ket bolus - as above but pain reduced to 8/10.

[rawdonwaller]

Traverse: to move across. Transverse: a plane through an object. ;-)

[tifowman]

If your doing a heart surgery would u go to stage 5??

[kaotiik]

Why do you take a video from Khan Academy xDDDD

[rockyboy]

Jesus this is woeful....nice boy, for fecks sake ..