Any DRs/nurses? ECG question?

[KardiaQuestion]

i know this is an absolute longshot on here but worth a try👍🏼 I posted recently about ECGs and my apple watch and as advised I got a Kardia device because it’s more accurate so I can show my cardiologist at my next review. I have a history of svt and heart blocks (various types, usually intermittent)

i felt quite unwell earlier today so I took a recording on my Kardia. It’s usually fast because my main problem is usually svt but this time it was normal (ranging between 45-60) but I still felt crap. There’s an app you can use to send your ecg tracings and they analyse it- they said the PR is very prolonged (between 350-390) and there was possible uncertainty about extra P waves or something along those lines

I actually have a GP appt later so I’m going to ask about it, so I’m NOT just relying on mumsnet for medical advice, and I absolutely will discuss this with my cardiologist when I show him my Kardia results, but just whilst I’m waiting, does anyone have any idea what any of this means or what it could be? I’ll attach some pics (will do it over 2 comments as can only attach 5 at a time haha)

thank you very much in advance 🥲

I actually have a GP appt later so I’m going to ask about it

I mean...........

....

Why can't you wait until the appointment?!

Well, because I wanted to post here. other people might have experienced similar and might have advice or knowledge about it 🤷🏼‍♀️

I'm not a cardiologist but 45-60 bpm is extremely low. Normal is 60-90. I expect that is why you felt unwell.

Oh I didn’t realise that, I thought 40-100 was normal oops! Im used to having svt/ fast heart rates but slow heart rates like this are new to me so im a bit clueless with it

the lowest it’s been is 40, it’s been sitting at low 40s now for the last few hours but doesn’t feel any worse than earlier, just the same.

hoping for some answers soon 🤞

People have different heart rates. What's normal for some may be very slow for others. Often depends on meds taken/coffee drunk/stimulants/activity and so on, as most would guess I suppose.

I have Afib, and take Beta Blockers. My HR is in the 30s overnight when sleeping, and hovers between 50-70 during the day. Spikes when I'm active, and of course goes all over the place when I'm in Afib.

As for the low rate, my cardiologist wasn't one bit worried. He was happy enough that it rose during activity. But then again I am on meds to slow it down a bit!

That's all I can add, and it's probably of zero use anyway since I don't have heart block or anything like that. Hope all goes well at GP for you.

Thank you so much!

yeah that’s a good point about everyone having different heart rates. I’ve heard that if people are really athletic then they’ll have a low heart rate too.

i think it probably just feels weird because usually my resting heart rate is 70 ish (when I’m not in svt) so 40 feels totally different for me, it’s like all the symptoms of svt (feeling sick, tired etc) but without the fast heart rate it’s bizarre x

Your cardiologist wasn't worried because you're on beta blockers. For someone not on medication, below 50 would be considered low and warranting investigation.

I used to take medication for my SVT/ heart rate and I’m technically still supposed to but I haven’t taken it in several days now, and weirdly even when I take it it never makes my heart rate this low! Don’t understand why this has happened, maybe it’s tiredness or something because it’s been a busy week

I did mention the fact that I was on beta blockers vis a vis the cardiologist's response.

Bradychardia is not generally dangerous unless HR is consistently below 40 when not at rest. But yes, of course it needs to be checked out. I gave my experience, and if a low heart rate is not going to harm me it's unlikely to harm OP, unless there is a serious reason for it.

Which she is having investigated.....

At no point did I say it was dangerous. I said it is considered low and warranting investigation. I don't know why you persist in contradicting me. The OP asked for an opinion.

Not cardiac but am a nurse and IIRC a prolonged PR phase can indicate some kind of block - which you do say you have a variety of. Hopefully you said to your GP and are seeing cardiology soon. Do they also know you are not taking all medications as prescribed?

First degree heart block, looks like.

a prolonged PR interval is first degree heart block. This is not a problem on it's own, however very long PR intervals can be associated with developing higher grades of heart block and that may be come problematic and warrants some thought. A heart rate of 45-60 is not necessarily 'extremely low' - it's a bit lower than usual but needs considering in the context of the rest of the patient, the rhythm etc

OP clearly has significant cardiac history and has posted several poor quality screenshots that are very short. It's not possible to really comment on what's going on/what caused the symptoms based on this. As usual, investigations need interpreting in the context of past medical history, previous ECGs/bloods, medications. Hopefully their GP will have been able to advise/reassure/refer, but if not, the best bet is to get real life medical advice if symptoms recur.