Heart Palpitations without chemo - could it be a side effect of AIs?

Hi guys

Has anyone else had heart palpitations who HASN'T been on chemo, but IS on AIs?  I've been on Arimidex for 12 months now.  I guess it would be similar to 'panic attacks'?  Tho pretty sure it isn't this!

I've had a scary few days this week, with thumping heart palpitations (skipping beats every 5 or 6 beats, then maybe after 10-15 beats) but yesterday morning at 3am, it was after EVERY beat & it scared the crap out of me.  I also had a 'throat blockage' that felt a bit like indigestion & I know this can be a sign of a heart attack, but didn't have the pressure, pain or clamminess associated with a heart attack. I was awake from 3am on ..... So I 'sat it out' til 10am with the thumping skipped beats still happening - then went to the GP. They did an ECG but it didn't show up - and wanted bloods done to make sure the troponin levels weren't 'up' (showing an enzyme related to heart attacks) but there were no pathology centres open on Sat in our towns which surprised me as they always used to be open - maybe they closed due to Covid?  So now I had to go to the closest hospital (and waste THEIR time) to get a simple blood test, ECG etc, when the pathology place should have been open.  :(

I said I would drive to the closest town where the hospital would do the bloods - but they didn't want me to drive in case I had an episode on the way ... so they called the ambos to take me.  This really upset me as it is a waste of an emergency service & I felt guilty that I was using the Ambulance when a more serious case could be impacted by it not being available!  :(

So at the hospital, they did another ECG (the beat abnormality didn't show, even tho the skipping continued throughout the day.)  Chest xray was clear.  Bloods were good.  I finally got  home at 6pm with one of my uke ladies driving up to pick me up.  Hubby thought I'd been out kayak fishing all day!    His dementia at least stopped him being worried! LOL

I go back to the GP for more bloods tomorrow (thyroid etc) and hopefully get fitted with a Holter monitor to check my heart beat over the next day or so - and I truly hope that it will pick up on the skipped beats.  My dad died young from heart (had his first one at 40 and died at 50 with numerous attacks in between.)  My brother was fitted with a pacemaker 2 years ago after a single catastrophic incident (he is incredibly fit & thin so that was a real surprise!)  My sister now tells me she has had palpitations for years - I didn't know!  So it is possibly inherited, could be age related, or could be a side effect from my AI tablets! 

I see my Onc on Tues, so will be mentioning both the ticker problems & the urinary urgency (which started about 4-6 weeks ago) as my main concerns.

Who else has had heart issues when they've NOT been on chemo but HAVE been on AIs?  (I know that chemo can cause heart problems - and they now check patients before & after chemo - tho the problems can start years after the treatment - so everyone needs to be aware of this.)

Hopefully this will all settle down soon without the need for too much medical intervention - I DO need to drink more water, as this can upset the electrolyte balance in the body (as can drinking TOO much water - it washes the electrolytes OUT of the body. This happened to my neighbour - she ended up with a pacemaker.)  So I have my fingers crossed.

It has also raised fears about what will happen to my husband if something adverse DOES happen to me - as we don't have family nearby - and I can't rely on friends to take over the care of hubby (with dementia) if I am unable to do so.  I will be contacting My Aged Care this week to kick start getting him 'on the books' even if we don't use their services initially.

What sort of Plan B do you have for your elderly partner/parents, in case something happens to you?  We don't have children tho we do have 2 stepchildren in NZ - but can't expect them to take over his care.