Junior Member
Join Date: Mar 2007
Location: San Luis Obispo, CA
Posts: 175
Bikes: 1988 Bottecchia Professional (for Eroica), 2011 Ridley Noah ISP (retired), 2020 Soma Fog Cutter (daily commuter), 2021 Ridley Kanzo Adventure (gravel), 2022 Tideace Aero (main road bike).
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I'd see your cardiologist first. I was having similar symptoms while trail running and after my PCP detected a mild murmur during a routine exam, I had a stress echo with a cardiologist. The test revealed a lower-than-normal ejection fraction rate. It's not serious enough to effect my cardio activities, and there's no treatment, but it provides me with situational awareness when I'm pushing too hard on the bike.