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

[@mohachelsea1994]

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

[@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 KZbin channel if you're interested, but I think this is a GREAT introduction for medical and nursing students!

[@drggerbacio2828]

yes this is a nice video, I made a video about valoration of anestesia you can check it on this link kzbin.info/www/bejne/qXbQpqZ-eJJ-l9U

[@MsJubjubbird]

I imagine TIVA was not exactly a thing

[@yumpikamdak2221]

Guedel used diethyl ether..

[@raniakataya5405]

Good and simple intro for dental students too

[@anniemshine4477]

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.

[@kindredkate8940]

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?

[@prettygemini3432]

Have you graduated now?

[@kindredkate8940]

@ Yes 😳 I’m a sophomore in college now!

[@jasonjackson3114]

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.

[@sarahpowell9391]

Clear and concise , very informative thank you .

[@foziafayaz2555]

I can't thank you enough.

[@MedSchoolMadeEasy]

we can't be happier that you enjoyed the video

[@euphoriamakings5546]

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

[@rawdonwaller]

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

[@alviyt6627]

This is very helpful. Thank-you.

[@nickydaviesnsdpharms3084]

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

[@josephreses3774]

It's not necessary. I don't give it often to my patients.

[@sulmanali4241]

Lay man may make wrong use of direct medical information Be careful

[@RitaMBuda-tz6bi]

​@josephreses3774 I so agree midazolam is totally unnecessary. I had the misfortune of getting it in pre-op, I think. I don't even remember that. I remember absolutely nothing after pre-op. Barely remember the recovery either. It's all too weird for me to have this kind of amnesia and I don't like it one bit. I keep thinking I may have been violated in the OR. That bugs me to this day. ☹️☹️🙁🙁😣😣😣

[@LauraRN713]

Interesting. Thank you for posting.

[@prashanthjayaraj1383]

Very nice explanation,thanks

[@pacmanzz]

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

[@doctorbobby4543]

Yes and return of airway reflexes as well. I am a physician Anesthesiologist and talk about this on my KZbin channel.

[@pacmanzz]

@@doctorbobby4543 i only ask because i remember when i reviewed my own surgery at work, the anesthesia log said before i was transferred to PACU, my vitals whole surgery were stable but upon awakening i was at 112 bpm SVT then sinus tachy then i returned to NSR shortly after. Went home with uneventful and was never told anything about it.

[@valentinacamarda5704]

Thank you!

[@basicbiotic9044]

Cal me [phone]

[@JessicaJohnson-dw4cv]

Well if the heart does stop what would you do?

[@danielgremillion543]

Jessica Johnson You'd start the process of resuscitation, the Anesthesiogist will usually hang/push meds(ex. Epinepherine,Atropine,etc.) You could defibrillate the heart, or you could start compressions, depending on the operation.

[@pacmanzz]

my father went bradycardic at one point during surgery, not a full arrest, but close to it, down to the teens. He got a shot of atropine and bounced right back to NSR.

[@dinmsia6195]

great job

[@kelsiecellistswimmerpianis1790]

Thank You

[@salam7905]

thank u so much ^^

[@carlosalfaro4464]

could you please post your references ?

[@sajid3089]

well done

[@melgamechanger]

How long is stages 2&3

[@EMan-ml8er]

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?

[@lindasoucy6195]

Hip replacement using spinal

[@kaotiik10]

Why do you take a video from Khan Academy xDDDD

[@tifowman8004]

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

[@MedSchoolMadeEasy]

+Tifowman there is no stage 5. stage 4 is the highest you can go- if you wanted to iatrogenically stop the heart and medulla, then stage 4 would cover it

[@waltercruz5526]

Tifowma

[@pacmanzz]

No. You iatrogenically arrest the heart using potassium based drug agents.

[@rockyboy220]

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

[@GlitchBeats1]

Thank you

[@drneddymakonza5216]

Thank you

[@tay974]

Thank you

[@marksylvester7659]

Thank you

[@hajarayelwa6863]

Thank you

[@MedSchoolMadeEasy]

You are welcome, hajara

[@blakepizarro1105]

Thank you

[@MedSchoolMadeEasy]

you are welcome blake