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Patio7, February 26,  2021  8:12am EST

Pfiser vaccine and afib

Anybody else have an issue?  I received my second Pfiser shot yesterday morning. First off..I am so grateful and would sign up for a third if needed....however by late afternoon I was in Afib, after having none for over a month..and none that lasted more than a short time for seven months. Well here I am 18 hrs later still in Afib. Also had a night of aches, low grade fever and very sore arm.  All acceptable except the Afib, which has been all over the map high as 177 but feels unlike past episodes.   Was scheduled for an ECG and pacemaker check tooday but think I will be postponed because of Covid  check before entering the building.  Anybody have any thoughts?

  • jameskelly
    jameskelly, February 26,  2021  8:19am EST

    So sorry about this. I've only had one Pfiser shot so far. #2 is due on March 9th. No issues with #1. I would not postpone any visits. According to stats, the shots should not cause Afib. Maybe this issue is non related? 

  • dsavoie1953
    dsavoie1953, February 26,  2021  8:51am EST

    Best advice. Google and direct your chat with Mellanie and your medical team. Melanie is the founder of and has a network of resources about AFIB. 

  • AHAModerator
    AHAModerator, February 26,  2021  8:52am EST

    Hi there,

    Thank you so much for reaching out to the MyAFibExperience community. I am sorry to hear that you are experiencing these side effects. Unfortunately, I am not a medical professional, so I would encourage you to bring these symptoms to your doctor at your upcoming appointment.

    Please keep us updated on how you are feeling!

    Best Wishes,

    AHA Moderator

  • grandscheme
    grandscheme, February 26,  2021  9:36am EST

    Good morning Patio.

    Yours is such a good question and, like others here, I'd suggest talking with your doctor/EP/cardiologist.

    I've had one dose of Moderna, which was uneventful. Sometimes the second doses of these vaccines -- as you know -- can produce different responses.

    What I'm planning (and this is just my approach, not a medical/professional opinion) is to hydrate, hydrate, hydrate and meditate, meditate, meditate for seven days before and keep telling my left arm and body what a good job it always does and how grateful I am to be a recipient of a vaccine that may help keep me safe. 

    Will any of this matter? Who knows. I'm about as far from a so-called "woo-woo" person as anyone can imagine, but do believe strongly in the mind/body connection.

    Patio, you raise an interesting question and I hope by now your afib episode has ended! And, congrats, you're fully vaccinated! That's awesome.

    Regarding water: I have to constantly pinch myself on any day to consume enough to reach my personal goal of at least 48 ounces. Again, that's only my goal. 


  • patrickg
    patrickg, February 26,  2021  10:18am EST

    Patio, congrats on getting the vaccine and sorry about your AFib episode, hope it has resolved by now! I'm also hoping it is unrelated to the vaccine as others have suggested...but that may be hard to prove either way. I also got the Pfizer jab on February 11 and am scheduled for the second dose next week and would be interested in what you find, so please keep us posted. I have had zero side effects from the first dose and understand the second dose may bring a stronger reaction, especially since I have allergies and had a bad reaction to the one and only flu shot in my 71 years a few years ago.

    As you know, the vaccination provides a great sense of relief and I wish you and all improved health going forward!


  • Myrna
    Myrna, February 27,  2021  3:25am EST
    Sorry to hear you're in AFib after your shot, hope you get back in NSR soon. My electrophysiologist prescribed Toloxin 0.125 mg and it's helping keep me in NSR longer, I've had fewer episodes. I haven't had the covid vaccination yet, hasn't been available here yet. I do have allergies to things like CT contrast dyes, anaphylaxis and I've heard that the Moderna vaccine can cause those with that allergy for some people to have anaphylactic reactions. I'm fine with the annual flu shots so will have to wait and see what will be offered here. I'm in Canada and I heard we'll learn more next week. So far, it's people over80, folks in care homes and health care workers being vaccinated . Having allergies, and AFib makes things more difficult.. Anyways, take care and hope you and we all stay healthy, heart and otherwise.
  • BJB
    BJB, February 27,  2021  3:34am EST

    I have had both of my Pfizer shots and had no adverse reactions to either one.

  • bfboca
    bfboca, February 27,  2021  4:32am EST

    Hi patio7.  Re: Afib event after receiving a second vaccine.  Had both shots and no problem whatsoever with either.  Having paroxysmal afib for quite a few years, I've detected a number of triggers that I do my best to stay away from but shots have never caused an issue.  Perhaps the media constantly telling us that the second shot can be a "doozie" causes a lot of stress and anxiety in people and that caused your afib event.  Anyway, sorry about your issue.  Glad to hear you've had both shots.  Stay well.  Bob


  • grandscheme
    grandscheme, February 27,  2021  8:00am EST

    Good morning all.

    As a former member of the media I had to laugh at your comment, bfboca! Yes, agreed.

    Now I skirt news, even though it used to be a major part of my life. Too much hype, too many editorialized "news" reports that are intended to be scary and keep us all hooked.

    It is good to know that two people here had second doses with no adverse outcome, as I am hoping that will be my experience too on March 13.

    Have a good day everyone.


  • depotdoug
    depotdoug, February 27,  2021  4:46pm EST

    Good luck and hope you see your EP or Cardiologist soon. AFIB is not my friend and any of ours. I get my first Pfizer/Biotech VAX  March 08. I know drink lots of H2O. 
    Plus i'm cuttingback back on News. Tooo much bad news, especially with the Covid-19 daily counts and results by state, country and world.

    Let us know how you do when you get doctor checked.


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