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MAC / Minimum Alveolar Concentration of Anaesthetics Concept in 5 Minutes!

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Having trouble conceptualising how anaesthetists use MAC values to keep patients asleep? Look no further than this video and the links below! Clarify the concept and find out what pharmacological and physiological factors will increase and decrease your MAC and why all of our patients remain asleep and unresponsive whilst under anaesthetic.
You may have to pause and replay portions of this video to recap key points - this is a rapid overview!
All volatile anaesthetic agents have their own properties, giving them different MAC values (see here: www.propofology...)
To see how Volatile Anaesthetics actually work, see here: www.propofology...)

Опубликовано:

25 авг 2024

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Комментарии : 43

@QuickMedic 7 лет назад

There are more resources on the website that explain how each volatile gas has it's own MAC value (%) - see links in the video description :-)

@ddfelder2 7 лет назад

Propofology thank you!!

@Axsa12 4 года назад

The music in the background is really really unnecessary and distracting.

@Heidyhohoho 4 года назад

You have GOT to turn up the volume when recording this...

@alejandromartin5174 29 дней назад

Really good video, thanks

@BLAM707 5 лет назад

So useful for a student ODP, Thank you

@discoverliterature5800 2 года назад

At no point in any trust in the country will the ODP be gassing patients. This is doctor level stuff and a complete waste of your time to learn.

@jojowondermonkey2 6 лет назад

Low M.A.C = High Potency

@miloelite 3 года назад

High M.A.C. = Low Potency

@200kimia 2 года назад

Low MAC= more lipid-soluble

@Jude.Ifechukwu 11 месяцев назад

I love the background music

@smithg6380 11 дней назад

I would think that hypercapnea would decrease MAC since hypercapnic narcosis can knock people out

@aw7329 3 года назад

The background music were annoying I couldn’t concentrate, otherwise, it was a well simplified explanation, thank you.

@michaeletzkorn 5 лет назад

I still have no idea what MAC actually is a measure of. Since it's given as a percentage. percentage of what to over what?

@mellowdoctor9029 4 года назад

Its the percentage of the inspired air

@mohiltrivedi8634 4 года назад

essentially, if a MAC is more than 100% it cannot be given (and is very weak). the patient still needs to breathe Oxygen, so if 100% of what they are getting is that anesthetic they are not receiving any oxygen. For example, N2O (laughing gas) has a MAC of 104%. This cannot be given because the patient will be receiving no oxygen. So it must be used in combination with something else. Hope this makes sense

@michaeletzkorn 4 года назад

@@mohiltrivedi8634 A whole year since I've seen this, thanks for the reminder that MAC exists. Sort of understanding, so perhaps we should look at the opposite case. 2% MAC then corresponds to only 2% of the air being breathed contains the drug? Is that it? Do you know why high mac corresponds to lower potency ("very weak")?

@mohiltrivedi8634 4 года назад

@@michaeletzkorn exactly! a higher MAC means that more of the drug has to be inhaled to have the same effect. therefore a higher MAC means a lower potency. and obviously the more drug you inhale the more side effects and unwanted properties come with the drug as well.

@ayushdash0001 4 года назад

@@mohiltrivedi8634 104 % N2O required to produce the same anaesthetic effect as of 0.75 % halothane. So halothane is more potent. But N2O rapidly diffuses into blood than halothane, and ultimately reaches brain. So doesn't that make N2O a more potent anaesthetic?? I couldn't get this contradiction..