ECG Rhythm Review: SVT, Atrial Fibrillation, Atrial Flutter

In regions where sun exposure may be limited, supplemental vitamin D may be required to maintain normal blood levels. The exact amount of vitamin D to achieve normal levels is unknown and usage varies in different regions and communities, which can cause problems, say the researchers. Dr. Bunch stresses that patients need to tell their doctors about all of the vitamins and supplements they take, as well as all medications, in order to ensure they get the best care possible. He says this research also suggests that checking blood levels of vitamin D in patients that develop atrial fibrillation may help uncover the cause of the abnormal heart rhythm disorder.

You May Also Like


  1. Also, P waves are usually buried in the QRS complex due to the atria and? ventricles contracting at the same time. Key to differentiate SVT due to AVNRT from atrial fibrillation is that A fib has iregular rythm. AVNRT has regular.

  2. You are right it is an AVNRT, but what I think you forget is that AVNRT is a type of SVT,? so he is not wrong. Technically atrial fibrillation is a type of SVT also. All SVT means is supraventricular, which means it originates above the ventricles. Another thing that is important about AVNRT is that
    -no p waves present

  3. The rhythm you call SVT is really AVNRT (AV Node re-entrant tachycardia). There are several types of SVT’s, AVNRT is the most common. Though these explanations are good for the layman and better than the “irritable focus” BS of old. If you are having problems with these rhythms PLEASE? see a cardiac electrophysiologist, not just a cardiologist, all of these rhythms can be cured with an ablation, a pretty simple and painless procedure.

  4. Thank you! Excellent video. Just discovered that I suffer from SVT and this video was perfect for explaining to me what is going on.?

  5. @ xtillxthexend…. your lucky, my pacemaker just records my Aflutters. I can’t tell I’m in Aflutter or AFib.?

  6. i have atrial flutter once every 2 to 3? months but my pace maker takes care of it

  7. : u would probably be unconscious or? feeling really bad or nearly dead with a heart rate that high…… 🙂

  8. hmm this is pretty informative. i? had an svt about a year ago, my heart rate was 225bpm, i thought i was dying, it was the worst, and the adenosine made me feel so different, i had another really short one recently but it went back to normal on its own. hopefully it never happens again, good video!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.