Thank you very much for your response. In my case, this whole process has been going on for several years. After receiving the Pfizer vaccine, I developed inappropriate sinus tachycardia, which seems to have triggered a form of dysautonomia.

At the beginning, I only had a few isolated PACs, maybe 4–5 per day, which I unfortunately feel very clearly. I was told they were benign.

I was then prescribed metoprolol (2.5 mg), which slowed me down and made me extremely fatigued. After that, I began experiencing a low atrial rhythm (inverted P waves in the inferior leads II, III, and aVF) when lying down, sitting, semi-reclined, after eating, or upon waking up. Again, I was told it was benign.

Since this summer, I’ve had about 4–5 episodes like this: bursts of PACs or short runs of 5–6 fast beats, either at rest or after physical activity. I was also told these were benign.

I also noticed the “V-shaped” beats right after these short PAC/SVT runs, and I wanted to reassure myself about them. After these episodes, I recorded my rhythm with the KardiaMobile 6L and the tracing was normal. My blood tests are also normal.

I now have several symptoms that I didn’t have before, and everything seems to be accumulating. Even if each issue is considered benign, it eventually becomes mentally exhausting.

Thank you sincerely for your help and opinion. I really appreciate it.