New heart rhythm

It would still be an arrhythmia, but it could be attributed to several causes, not least of which might have been in your future simply due to aging and genetics. You go from tachycardia to bradycardia (fast heart rate to a slow heart rate) with no obvious stimulation, or at least one which you know about and have shared.

So, you may have SVT (supraventricular tachycardia) that swaps places with bradycardia due to sick sinus syndrome ( https://www.mayoclinic.org/diseases-conditions/sick-sinus-syndrome/symptoms-causes/syc-20377554 ). Again, I'm just fishing here. I have no medical expertise whatsoever. You should consult a cardiologist soon and I expect a pacemaker is in your future, but certainly a visit to an electrophysiologist for a formal assessment.

I also went from A fib into rather wonky rhythm, with prolonged periods of my heart rate dropping to mid 30’s to the low 40’s. Wearing a halter monitor for 7 days showed I was in a junctional rhythm due to sick sinus syndrome, combined with bradycardia. We were watching it for 6 months, until my rate dropped to low 30’s with fainting episodes, at which point my EP cardiologist put in a pacemaker. My heart is now pacing 75% of the time, and have no more symptoms.

@gloaming - I appreciate your response. I'm traveling at the moment, but plan to see the cardiologist next month. I hope to get this resolved.

@mbixler wonky rhythm is a way to describe this for sure. I take diltiazem when the numbers are high and suffer through the low numbers. So far no fainting spells, but definitely dizziness. I'm traveling right now - hope to see the cardiologist when I get home.

Hope your travels are fun and uneventful - health wise - and good luck with your cardiologist! I hope you are using an EP cardiologist. With complicated rhythms they are vital.

@mbixler
I'm traveling in Goa, India now. Hope I get an appointment to see the cardiologist, but it's hard getting one in B.C. The last time I spoke with him, he seemed reluctant to give me a pacemaker because of my age (79) and I have lost weight. I'm finding that the older I get, medical attention is less available to me.

@filomena46 India sounds wonderful! I’m 70, and the cardiologist said we had no choice but to do the pacemaker - but I live in the States and have private insurance, so it’s much easier to get it done. Hope they let you proceed with the appropriate procedure.

I appreciate your input. Thanks.