Atrial Fibrillation Anatomy, ECG and Stroke, Animation.

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Atrial fibrillation is the most common type of cardiac arrhythmia. In a healthy heart, the sinoatrial node or SA node initiates all electrical impulses in the atria. In atrial fibrillation, electrical impulses are initiated randomly from many other sites called ectopic sites in and around the atria, commonly near the roots of pulmonary veins. These un-synchronized, chaotic electrical signals cause the atria to quiver or fibrillate rather than contract.
Although the atrial rate during atrial fibrillation can be extremely high, most of the electrical impulses do not pass through the atrioventricular - the AV - node to the ventricles. This is due to refractory properties of the cells of the AV node. Those do come through are irregular. Ventricular rate or heart rate is therefore irregular and can range from slow - less than 60 - to rapid -more than 100 - beats per minute.
On an ECG (EKG), atrial fibrillation is characterized by absence of P-waves and irregular narrow QRS complexes. Reminder: P-wave represents electrical activity of the SA node that is now obscured by activities of multiple ectopic sites. The baseline may appear undulating or totally flat depending on the number of ectopic sites in the atria. In general, larger number of ectopic sites results in flatter baseline.
As the atria do not function properly, the heart puts out less blood, and heart failure may occur. The most common complication of atrial fibrillation, however, is the formation of blood clots in the atria. As the atria do not empty completely into the ventricles, the blood may stagnate inside the atria and blood clots may form. These clots may then pass into the bloodstream, get stuck in small arteries and block them. When a blood clot blocks an artery in the brain, a stroke may result.

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[@suaadbougis47]

Atrial fibrillation is the most common type of cardiac arrhythmia. In a healthy heart, SA node initiates all electrical impulses in the atria. In AF, electrical impulses are initiated randomly from many other sites called ectopic sites, in and around the atria, commonly near the roots of pulmonary veins. These un-synchronized, chaotic electrical signals cause the atria to quiver or fibrillate rather than contract. Although the atrial rate during atrial fibrillation can be extremely high. Most of the electrical impulses do not pass through the AV node to ventricles. This is due to refractory properties of the cells of the AV node. Those. that do come through are irregular. Heart rate is therefore irregular and can range from slow- less than 60- to rapid - more than 100. On ECG, AF is characterized by: - absence of P waves - irregular narrow QRS complexes Reminder: P wave represents electrical activity of the SA node that is now obscured by activities of multiple ectopic sites. - The baseline on ECG may appear undulating or totally flat depending on the number of ectopic sited in the atria. In general, larger number of ectopic site results in flatter baseline. As the atria do not function properly the heart puts out less blood, and heart failure may occur. The most common complication of AF, however, is the formation of clot in the atria. As the atria do not empty completely into the ventricles, the blood may stagnate inside the atria and blood clots may form. These clots may then pass into the bloodstream, get stuck in small arteries and block them. When a blood clot block artery in the brain, a stroke may be result.

[@bellabhat9089]

Wat a explanation ❤️

[@bellabhat9089]

Y in copd heart rate is more

[@oscarfernandezruiz7881]

Excelente resumen, muy didactico! Thank's a lot!

[@tummy540]

CAN'T THANK YOU ENOUGH. LIFE SAVING VIDEOS! ♥️

[@cristinavieira46]

This is such a great video, very helpful and concise.

[@shashimoghe3920]

Very simple and easy to understand the problem excellent animation thanks and good wishes

[@DuckODuckProductions]

THIS IS SO GOLDEN! THANK YOU SO MUCH!

[@kathydaddeo8947]

I have had episodes where my heart climbs up to 245 and above and drops down to 40’s. It is irregular to say the least. Last episode of it caused me to have a cold sweat, difficultly in breathing and slight left shoulder pain. It lasted about seven hours and returned to normal abruptly just as it started abruptly. To date I have not captured it on an EKG. I now have the device that monitor’s EKG from home. I can then send a copy of it via my phone in a pdf file. Thank God for such wonderful technologies they have today.

[@petergriffin1546]

Did they give you a beta blocker?

[@kathydaddeo8947]

@@petergriffin1546 No, they wanted to see it on an EKG.

[@petergriffin1546]

Get 02 meter and log heart rate. Also fight for a ultrasound of heart asap. 245 is very high. Go to er next time it happens not dr office. They need to observe you for sometime. Try decaf too if you drink coffee or tea instead. Heart rate is easy way at home to tell. It comes on quick. My mother had it.

[@kathydaddeo8947]

@@petergriffin1546 They have now. The only problem is that my normal heart rate is 60 ish and below. I am afraid of what the beta blocker would do to my rate being that low without it.

[@kathydaddeo8947]

@@petergriffin1546 I am scheduled for an echo next week. I am wondering if I have any blockages because I have dull aches in my heart even at rest. It comes and goes not really painful but definitely noticeable and slightly uncomfortable.

[@sarasaeed8677]

This is awesome. Thank you!

[@sarahtrignano6492]

Using ECG videos to supplement ACLS cert studying...concise and correct, big thanks!

[@jUjURama28]

Wow,I never thought I can understand this topic in a VERY SIMPLE WAY,tnx for this😭

[@HafizahHoshni]

Simply excellent. Very grateful for clear, concise and well presented video. Thank you for the great channel. 27/8/2018 😊

[@antpoo]

I just got Atrial fibrillation yesterday non stop. Ive just turned 40 and I’m fit and healthy. I have had bouts of it most of my life but never permanent as I’m suffering now. A terrible feeling in the chest.

[@omixam1868]

I hope you're doing better. Please take care random stranger on the internet.

[@lordrinn5209]

I hope you're doing better brother

[@drewjitsu8454]

Everything going alright man? Happy new years

[@antpoo]

@@drewjitsu8454 forgot about this post. I had to go get a cardio version, But they made me take blood thinners for a whole month before the procedure. Everything reasonable since, I still workout everyday, but the heart does some strange things sometimes. Seems to be happening to a lot of ppl these days.

[@enockosuma3662]

Straight to the point

[@TheAmyk01]

your videos are soo amazing!

[@LuizHenrique-ki2up]

You are my hero, thank you!

[@phoebemosby1858]

great video!! I love it so much!

[@shahbano303]

Such a great video made 8 yrs ago

[@sarahpurple6547]

Thanks a lot for making my life easy

[@gadeppan8360]

great explanation

[@WhiteboardMedicine]

Super awesome video! One of the channels that inspired us to start our own channel. We have a much different style. One of our playlists dives into a 12 lead EKG with atrial fibrillation. This would be a great video to apply to this actual 12 lead with afib. Would love to hear what you think. Cheers

[@fatmadiaa5319]

So perfect! Thank U!

[@TanNguyen-lv5xi]

Very good and funny videos bring a great sense of entertainment!

[@BlaiseSpectre]

very helpful! thanks

[@elienayrj5872]

Thank you so much, you really know how to explain in a really easy way. Could you please present some example of BBB, and Heart Blocks. Once again Thank you.

[@samruddhibora4546]

Thank you so much for this

[@pendulum35]

many many thanks from Nepal!

[@darshankerongi]

Bhai kun course garxas?

[@raidsagr3263]

Thank you so much

[@salmankhursheed9635]

Good way to understand

[@a-ron9769]

What an amazing video , thank you

[@Alilamedicalmedia]

Glad you enjoyed it!

[@greicyerradaable]

muchas gracias

[@user-dj1to9rw1s]

Thanks 🙏 from Iraq 🇮🇶

[@bismijoseph284]

Thanks for the video..informative

[@tombroder9815]

thank you

[@syubiased6854]

Best video ever

[@sinclair657]

Thank you

[@lifeandliving555]

Just wow

[@Mohammed-mk5hy]

Thanks !!

[@naziabintehabib4103]

😮 wow amazing

[@shreyajohn99]

Thanksss✨

[@donmulder8061]

I take a Beta Blocker as a precaution because my family has Long Qt Intervals. Mine has always been borderline and I am low risk. Last month I bought an ice cold drink and guzzled it too fast and it gave me a brain freeze but it also gave me a sudden mild arrythmia. I have had these before andmy electrophysiologist who checks me for Long QT says these episodes are likely benign PSVTs as I dont get them often and they are easily reduced by me doing a vagal maneuver (holding my breath, making internal pressure, splashing cold water n my face). My heart usually never goes up above about 108 and often stays in the 90s when these rare episodes occur. On the day I had that brain freeze my heart rate went u to 96 and I did a vagal maneuver and it went down to 83. Then I splashed cold water on my face and it went don to 76. THen it settled back down to it's normal resting heart rate of 50 to 57 where it always has been. Since that day though, I feel my heart beating like never before. My heart rate is normal but it might go up to 66 then back down to 55 and back up again. Is this what Afib is like? My heart rate is in its normal range and I feel fine when exercising. My pulse feels pretty normal but I may have a few beats here and there that are closer in sequence to each other than the rest.

[@sabbirHossain-jk3yh]

good

[@sardarsingh7349]

Thankyou sir

[@dr.md.ashrafulmollah9579]

Sooo cool

[@yousufalassal6025]

please add this video to the cardiology playlist

[@shilpapatil6123]

Very helpful videos Just rockkzzzzzz

[@sallykorini9001]

Great❤❤

[@nyanmako6205]

It just showed how dangerous AFib for a prolonged period of time. I know digoxin is used for patients having AFib and to prevent heart failure.

[@bellabhat9089]

Digoxin causes bradycardia??

[@JesusisKingofkingsandLordGod]

I'm comparing this to my ecg results I got on my smart watch, considering I've had chest pain and constant palpations, I might have afib. Too bad I can't post pictures of my ecg on here huh?

[@Garygratz88]

Would love to see a video on ICP and ECG Twave inversion.

[@sanjughosh9542]

Why there is no T wave in ecg of atrial fibrilation? Thank you in advance

[@burmaapurev2261]

I think T wave represents SA node,u c that in case of atrial fibrillation,there will be abnormal SA node

[@familiamarquez3219]

​@@burmaapurev2261T wave represents ventricular relaxation AFib is caused by ectopic foci,not by the SA node itself

[@bellabhat9089]

​@@familiamarquez3219ventricles not relaxing and ventricular filling is not properly filled no proper ejection

[@BasitKhan-jr5rx]

Good❤

[@monihussainy8457]

Does blood thinner help in Af patient with Ppm implanted??

[@TO-ps2qq]

I am an AFib patient. To put my heart back into a normal sinus rhythm I eat jalapeño peppers.

[@user-ek2oj9ix3c]

🧢

[@monathahmeen9445]

Anti anginal drugs and anti hypertensive drugs please explain.😅

[@kaylaridenour2502]

Can a blood clot pass through the vein??

[@erickaray1816]

This is exactly what happen with my father.😢

[@abhayknowledge7285]

Sahi hai

[@yehdekhlobhai.]

Omg 😢 i m scared

[@afiqahkasri5348]

😭😭👏👏👏👏👏😊😊😊

[@Abhay123Tiwari]

Gorakhpur main check up karo

[@ytiama1572]

Is bad went you heart rate goes 48 down to 31bpm

[@arny625]

Yes

[@kennygarcia102]

So no p waves and narrow qrs GOT IT

[@bellabhat9089]

Irregular QRS but regularly coming

[@asifnazir3182]

Ma is Marz mobtla ho plies halp

[@primusjulianbugar262]

Meh.