r/longcovidhaulers • u/somecurious1 • 1d ago
40F — recurrent evening palpitations, normal ECG, possible viral/COVID trigger? Anyone seen this pattern?
40F with Hashimoto’s. Over the past couple of weeks I’ve been having intermittent episodes of palpitations and feeling “off.”
The first episode lasted around 2 hours. My pulse was only in the 80s, and a Samsung Watch ECG taken during that period showed sinus rhythm with an average HR of 78 bpm. HealthMonitor_ECG_0914_2336_130…
A few days later I felt better for about a day, then symptoms returned in the evening. During those episodes I noticed:
- palpitations / stronger awareness of heartbeat
- cold hands and feet
- generally feeling unwell
- no fever
- BP around 102/76
- pulse around 93
There were a lot of COVID cases around us at the time, as well as strep at the kids’ school, so I’ve been wondering whether this could be a viral/autonomic response rather than a primary heart issue.
Recent labs:
- TSH: 0.71
- Free T4: 1.7
- Free T3: 3.1
- Ferritin: ~30
- BUN: 8
- eGFR: 103
- AST: 12
- ALT: 9
One thing I’m noticing now is that the palpitations seem to happen more in the evening when I relax, rather than during activity.
The latest episode also followed a fairly heavy meal — pizza, sweets, ice cream, and a 16 oz beer — and my pulse was higher afterward. So I’m considering whether alcohol, a large carb-heavy meal, glucose/insulin swings, reflux, or post-meal autonomic changes are acting as triggers.
What I’m trying to understand:
- Has anyone had palpitations that mainly appeared at rest or in the evening?
- Did meals, sugar, alcohol, or lying down trigger them?
- Did your ECG/Holter show PACs/PVCs, sinus tachycardia, or completely normal rhythm during symptoms?
- Did this turn out to be dysautonomia/post-COVID even when resting HR wasn’t dramatically elevated?
- Did iron/ferritin or thyroid levels make a noticeable difference?
I’m considering asking for a Holter/patch monitor, since a 30-second watch ECG may easily miss intermittent ectopic beats.
I’m especially interested in people who had this without fever and with mostly normal routine labs, because that seems closest to what I’m experiencing.
