Received Mar 24, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| TDAP | TDAP (ADACEL) | SANOFI PASTEUR | 1 | U8339BA | IM / LA |
Approximately 90-120 minutes after receiving the vaccine, I began feeling heart palpitations - clusters of them. I had an idea about what they were, but never had them before so I wasn't completely sure. Beginning the day I received the vaccine, and still to this day, I get clusters of palpitations every day. Often multiple times throughout the day for anywhere between 5 mins to an hour. They are almost always guaranteed to occur during, and especially after, a stress response. As such, it seems catecholamine release induces them most often, but I still seem to get them even when at rest and not stressed and more commonly at night. They are HARD, I feel them in my chest and in the back of my throat. They are extremely uncomfortable and have prevented me from falling asleep some nights. While at work one evening, I was finally able to capture these events on an EKG and my suspicions were correct - they were Premature Ventricular Contractions. My EKG is otherwise unchanged compared to tracings before the palpitations started other than the PVCs. I've never had PVCs (at least that I've felt) before the vaccine, and now have had them every single day since getting it. Obviously I can't say with 100% certainty the Tdap vaccine caused them, but there's an extremely strong correlation because of the suspicious timing.
No symptoms or known illnesses
HTN otherwise, extremely fit and healthy
Valsartan 160mg - once daily. No other supplements/herbs outside of a normal, varied diet
No known allergies
EKG on 2/3/25 confirmed the palpitations as PVCs. I'm in the process of scheduling lab work and an echocardiogram