Omg, I have tried to get someone to make me understand this for so long. I have watched so many other videos,then I saw your video and mentally challenged you to make me understand. I could not believe how simple you made it. I finally got it. You have a new subscriber and I will be using your videos as as part of my studies from now on. Thank you so much!
You are very much welcome @mohan kukade. Glad you got value from it. Make sure to subscribe to the channel, because I have a lot more content like this coming to help you understand how the human body works 👍🏽.
You are very much welcome. Glad to help. Make sure to subscribe to the channel, because I have a lot more content like this coming to help you with biology.
Wow. I was literally surprised when it ended. I was like “that’s it?”. I spent almost an hour watching my video lecture on this and was absolutely confused but when you explained it, it was so concise and clear. thank you
I'm a registered nurse and I just found this app called ACLSMED super helpful!! It has all ecg rhythms, clinical significance, causes, treatments, etc. A must have for healthcare professionals and medical and nursing students!!! It is available in androids and iphone. Just my two cents! :)
Remember AVDA A- Atrial systole (depolarisation of atria/contraction of atria/P) V-Ventricular Systole (depolarisation of the ventricles/contraction of the ventricles/P) D-Diastole (repolarisation of the ventricles/relaxation of both atria and venticles/QRS complex) A-- Atrial systole (depolarisation of atria/contraction of atria/P)-ommiting U Correct me if I'm wrong or thumbs me up for others to see.
@pirateXhunterXzoro Excellent question. That has to do with the fact that you aren't measuring the depolarization and repolarization directly on the heart. You are placing positive and negative electrodes on different parts of the body (i.e. wrists and ankles) and measuring the potential differences. These result from what happens in the heart, but there's more involved in that. I can't explain every nuance, but that's the overall reason from my understanding.
Thank you simple video to give you a simple understanding.Many videos are way too complex and don't take into account that some people have no prior knowledge.Keep up the great work :)
@petercourt I'm not sure of the exact range but it should start within a few milliseconds. However, the contraction can last up to as much as 300 milliseconds. Check out episode 47 for info on the actual contraction.
the u wave is due to contraction of the papillary muscle .. small,positive, and rare wave and the atria Re-polarization is masked by the stronger QRS complex ( ventricles depolarization ) because they happen at the same time ;) ..hoped i helped
I enjoyed #048 how to read ECG. But could you do another video in more detail. I like how you teach and I would like to become better at reading the ECG. Maybe like a video for 10mins or so all about ECG/EKG..thank you again for all your videos!!
thanks interactivebiology!.. the place where I live.. Doctors (most of them - actually every doctor I have met) do get offended if I even ask them what they are doing to combat a problem based on these readings..
why is the T wave "positive"? I understand, and it makes sense that the depolarization in the atriums and the ventricles have that effect on the EKG but not why the T wave is positive. Thank you for great videos, I just found your channel and i love it!
thank you so much...sir your video was a grt help..i m student of first year medicine..this was indeed superub..plzz continue the good work..looking forward to see more videos frm you
awesome! wish Doctors here were like you. :) most of them here get offended if I even ask them what they understood and what they think they will do to combat the problem. :)
Olorin That's correct. As the ventricles depolarize, the atria experience repolarization but it is masked by the much larger QRS complex. You can see the atrial repolariaztion, or Ta wave, under certain conditions such as a third degree AV block. In this case, the wave of depolarization initiated from the atria never reaches the ventricles and you can eventually see the Ta wave by itself.
You are very much welcome @@user-wj7pw9ib9u. Glad you got value from it. Make sure to subscribe to the channel, because I have a lot more content like this coming to help you understand how the human body works 👍🏽.
It can be recognised not by using conventional ECGs but during some specialised electro physiology tests when both the atrial and ventricular waves are separated
Thank You. This explanation is fantastic. Do you mind if I use this video to show patients in my Cardiology clinic? I would greatly appreciate it. Please advise. Thank You in advance.
so amazing explaining the ECG in very easy way .. what left is the links to the mentioned episodes ,, i think the whole thing would be way better and time saver if they are provided .. thx anyway
Love this thanks for posting the video. I'm going into emergency medicine and this helps me understand EKG PQRST waves a lot better then what I learned in class!
Great video! You just didn't explain that the QRS complex mask the repolarisation of the atrium (we can see on the edge of the QRS complex that the curve goes down a little) Thanks a lot for your videos anyway! It helped me a lot! :)
For the P and QRS, why does the line go back down when they're still depolarized? Why does the T wave line go up during repolarization? And why does the Q and S go down before spiking up? Thanks a lot
That the direction of electrical depolarization is retrograde to what it normal is. When seen in lead 2, it implies the vector is moving away from Lead 2 (when you think of Einthoven's triangle)
Is there a video that show when SA node and AV node fire, when atria relax, when the ventricle relax, when valves open and close, and the points where ventricle pressure and volume is high or low? I really need help with that.
This might come as a stupid question but why doesnt the atria repolarize? Is this somhow masked by the QRS complex? Like if its inside/behind the QRS complex. Is this wrong? Or is there some other explanation?
![BRASIL vs. PERÚ [4-0] | RESUMEN | ELIMINATORIAS SUDAMERICANAS | FECHA 10](http://i.ytimg.com/vi/tbyOJKXfQnI/mqdefault.jpg)
Outstanding. I sat through a two hour lecture and I was more confused than when I came in. This is straight to the point and very clear. Thanks.
Omg, I have tried to get someone to make me understand this for so long. I have watched so many other videos,then I saw your video and mentally challenged you to make me understand. I could not believe how simple you made it. I finally got it. You have a new subscriber and I will be using your videos as as part of my studies from now on. Thank you so much!
It was amazing I understood it clearly than my lecturer's teaching
Thank you sir
You are very much welcome @mohan kukade. Glad you got value from it. Make sure to subscribe to the channel, because I have a lot more content like this coming to help you understand how the human body works 👍🏽.
Thank you so much... I appreciate you. I been watching your videos and they are EXTREMELY helpful.
You are very much welcome. Glad to help. Make sure to subscribe to the channel, because I have a lot more content like this coming to help you with biology.
Yes, you can do so. Thank you for using our videos. We hope your patients will find them useful and easy to understand.
Wow. I was literally surprised when it ended. I was like “that’s it?”. I spent almost an hour watching my video lecture on this and was absolutely confused but when you explained it, it was so concise and clear. thank you
Yayyy, glad you understood 👍🏽
Amazing lecture about ECG
Thank you 💕 for sharing
You're very much welcome. Make sure to subscribe for more.
You are great! You're explanation made my understandings of the waves much more easier. Thank you!
Finally found someone to teach me in a way, I can understand. Thanks for this thorough lecture
Kya samaj me aaya itni chutiya video se
I'm currently in pharmacy school and every one of your heart videos has helped me more than the lectures of my professors. thanks!
Thank you. You made that so easy to understand. I'm in nursing school and was not able to grab the concept until.
Thank you so much for these videos! They are helping me as an instructor explain topics in a much more simple and effective way.
You're very much welcome, from one Leslie to another 😃
I'm a registered nurse and I just found this app called ACLSMED super helpful!! It has all ecg rhythms, clinical significance, causes, treatments, etc. A must have for healthcare professionals and medical and nursing students!!! It is available in androids and iphone. Just my two cents! :)
Remember AVDA
A- Atrial systole (depolarisation of atria/contraction of atria/P)
V-Ventricular Systole (depolarisation of the ventricles/contraction of the ventricles/P)
D-Diastole (repolarisation of the ventricles/relaxation of both atria and venticles/QRS complex)
A-- Atrial systole (depolarisation of atria/contraction of atria/P)-ommiting U
Correct me if I'm wrong or thumbs me up for others to see.
What is p at the end of each statement.
As u mentioned that means both atria and ventricles contracts at the same time
Which is not possible(except in diseased condition)....
this is incredible. i have a test paper at medicine tomorrow and this video made the thing a lot easier
Thank you for your video! I'm a nursing student and appreciate your eagerness to share your knowledge.
Love you Sir 👍❣️
Love you too 😃
I love this guy's videos. They help me a lot when I study for my A&P exams.
This was well made and easy to understand!
@pirateXhunterXzoro Excellent question. That has to do with the fact that you aren't measuring the depolarization and repolarization directly on the heart. You are placing positive and negative electrodes on different parts of the body (i.e. wrists and ankles) and measuring the potential differences. These result from what happens in the heart, but there's more involved in that. I can't explain every nuance, but that's the overall reason from my understanding.
thank you ... i have been having problems with ECG but now i get it perfectly ..thanks to you
Well done. Easy to follow even for patients.
fantastic, you really help with your teaching style and visual bits :)
One word. Incredible.
I love these videos! Thank you so much for taking your time to teach. They are so helpful and explain things that the instructors are not in class!
@afritschka You are very much welcome. Glad to know that the videos are helping you understand better. Good stuff! Stay tuned for more :)
I would to say thanks .You been helping me out so much is my classes.keep up the good work lol
Thank you simple video to give you a simple understanding.Many videos are way too complex and don't take into account that some people have no prior knowledge.Keep up the great work :)
Simple and efficient. Gave me a pace to start referring more about it. thank you
its safe to say your bloody fantastic!! i reckon ive passed all my previous subject because of you!
i m a army doc
n i find it vry helpful as i m on a isolated place
thnxs
Great Job! I love all the videos you had made as they really help me in understanding the topics I am studying. Thank you. God bless ;)
Flawless explanation, gave your like.
@petercourt I'm not sure of the exact range but it should start within a few milliseconds. However, the contraction can last up to as much as 300 milliseconds. Check out episode 47 for info on the actual contraction.
the u wave is due to contraction of the papillary muscle .. small,positive, and rare wave
and the atria Re-polarization is masked by the stronger QRS complex ( ventricles depolarization ) because they happen at the same time ;) ..hoped i helped
Quick, simple, and easy to understand. Thanks. :)
I enjoyed #048 how to read ECG. But could you do another video in more detail. I like how you teach and I would like to become better at reading the ECG. Maybe like a video for 10mins or so all about ECG/EKG..thank you again for all your videos!!
thanks interactivebiology!.. the place where I live.. Doctors (most of them - actually every doctor I have met) do get offended if I even ask them what they are doing to combat a problem based on these readings..
Very easy to understand video. Thanks
Awesome video!! Great way of breaking down the information it really helps.
why is the T wave "positive"? I understand, and it makes sense that the depolarization in the atriums and the ventricles have that effect on the EKG but not why the T wave is positive.
Thank you for great videos, I just found your channel and i love it!
thank you so much...sir your video was a grt help..i m student of first year medicine..this was indeed superub..plzz continue the good work..looking forward to see more videos frm you
Thank you! Fantastic teaching - clear and to the point.
Sir very well explained the topic thanks and good wishes
You help me so much in my Anatomy & Physiology studies! Thank you so much, i really mean it!
you and me both
Really helpful video and very easy to understand. Thank you.
you are a great teacher! I can't wait to take my test in school. thank you
i think i love you! you are my hero! :) please keep the videos coming!!!
Thank you so much! This video was great and supper easy to understand ;my book was confusing me.
awesome! wish Doctors here were like you. :) most of them here get offended if I even ask them what they understood and what they think they will do to combat the problem. :)
You should state atria repolarization during the QRS complex to avoid confusion.
it occours during QRS complex right?
+Olorin i believe so. the ventricles are a bigger muscle so ventricular repolarization masks it on the EKG
Olorin
That's correct. As the ventricles depolarize, the atria experience repolarization but it is masked by the much larger QRS complex. You can see the atrial repolariaztion, or Ta wave, under certain conditions such as a third degree AV block. In this case, the wave of depolarization initiated from the atria never reaches the ventricles and you can eventually see the Ta wave by itself.
Scott Wilson
Scott Wilson yes ! it made me so confused and it’s not that easy to go back
Hi Leslie, Thank you so much for these excellent videos - they are incredibly helpful for brushing up on concepts that I hadn't completely grasped.
Thank you. Excellent presentation.
You are very much welcome @@user-wj7pw9ib9u. Glad you got value from it. Make sure to subscribe to the channel, because I have a lot more content like this coming to help you understand how the human body works 👍🏽.
amazing, ur video makes us to love science more and understand it better
thank you so much for everything
exactly the information I needed. Thank you for making these awesome videos.
Thank You so much....I have read and reread this chapter. You made it make sense.
brilliant thank you so, clean and simple to understand
It can be recognised not by using conventional ECGs but during some specialised electro physiology tests when both the atrial and ventricular waves are separated
Thank you very much for doing these videos. They are helping me get through my a&p classes (:
Thaaaannnnkkkk youuuuu it’s really helpful 🤍🤍🤍🤍🤍🤍🤍🤍🤍🤍🤍
excellent!!!! i hd alot a problems regrading Ecg reading!!! but thanks to this video :)
I love your videos Leslie! please, keep them coming.
Thank you from Miami :)
Thank You. This explanation is fantastic. Do you mind if I use this video to show patients in my Cardiology clinic? I would greatly appreciate it. Please advise. Thank You in advance.
Awesome Video! Thank You! To all the haters, you cant learn everything in one video, you have to build off of each video!
@maihot You are very much welcome!
Your accent is ace! Thank you very much for this, helped sooooo much with revising.
Wow, explained very well but you didn't mention anything about the repolarization of the atria! Which segment of the graph represented it ?
Good video.. that would also be nice to have the links for other related videos because I cannot find the other episodes mentioned
Thank you soo much sir for more easier vdo uploaded
You are awesome 😎
And so are you 😃
Thank you for the interest and helpful video
so amazing explaining the ECG in very easy way ..
what left is the links to the mentioned episodes ,, i think the whole thing would be way better and time saver if they are provided ..
thx anyway
Love this thanks for posting the video. I'm going into emergency medicine and this helps me understand EKG PQRST waves a lot better then what I learned in class!
Great video! You just didn't explain that the QRS complex mask the repolarisation of the atrium (we can see on the edge of the QRS complex that the curve goes down a little) Thanks a lot for your videos anyway! It helped me a lot! :)
thank you for this video. this will help my wife in getting her ACLS cert.
Thank you so much for these videos, they are such a huge help!
am looking to be trained as an ekg tech. this helped.
very easy to understand.thanks
Your videos are quite helpful. Can you please explain the terms depolarization and repolarization in simple words?
For the P and QRS, why does the line go back down when they're still depolarized? Why does the T wave line go up during repolarization? And why does the Q and S go down before spiking up?
Thanks a lot
Omg you just made it seem so simple than what my biology book was blabbering on about.
This is fantastic!!! I am learning so much
Very helpful and good in details
THANKS!!!!!!! Just had a BREAKTHROUGH!!!!!
Thanks from saudi arabia 👏🏻
@jaaz1802 Glad to know the videos can help you from so far away. Thanks for the work You're doing. It makes a difference!
Thank you so much from INDIA🇮🇳🇮🇳
Another simple let great video.
You are the man! Thank you loads Leslie...
That the direction of electrical depolarization is retrograde to what it normal is. When seen in lead 2, it implies the vector is moving away from Lead 2 (when you think of Einthoven's triangle)
Is there a video that show when SA node and AV node fire, when atria relax, when the ventricle relax, when valves open and close, and the points where ventricle pressure and volume is high or low? I really need help with that.
Righteous video... well explained :)
this helped me a lots.
This might come as a stupid question but why doesnt the atria repolarize? Is this somhow masked by the QRS complex? Like if its inside/behind the QRS complex. Is this wrong? Or is there some other explanation?
You sound Trini....good explanation! Thanks so much :)
thank you, that was brief and cool.
@akshalabi You're welcome. Glad to know this helped. Stay tuned! We have more Biology videos coming very soon...
Thank you so much for these videos.
this helped so much thank you
Excelente aula, Thanks