developed sudden Bradycardia when resting not an athlete or someone who exercise

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I will start off by saying Im 22 and not someone who does any exercise tbh. I was on 120mg of propranolol for about 2 years prior all together I was on it for about 3 and half with a gradually increased dose for pounding heart, fast heart rate and skipped beats.

So my symptoms started about a month ago I'd taken my normal dose of 40mg propranol at 11pm I noticed my heart rate went to 48 bpm and I was feeling nauseous. My heart rate normally is at 65 whilst on the BB (literally the day before) without it is around 73 whilst resting. I thought nothing of it but noticed it kept dipping under 50 the following morning and whilst walking briskly it wouldn't go over 75 and I was getting lightheadness and breathless.

So I decided to wean myself off my tablets which was a big thing for me as anytime before my heart would react strongly to just missing one dose. So I went to 80mg a day noticed it went slightly up to 55 then a day later is was back to under 50 so reduced again. Nearly every other day I was reducing as my heart would still go under 50 even on just two 10mg a day i was getting feelings of sickness but my heart rate would go now if walking so I wasn't getting breathless anymore.

As of now I'm completely off the propranolol for 2 weeks now which I'm really happy about but my heart still drops to around 62 whilst sitting and around 56 whilst lying down i can always tell when it's beating so because I get a funny feeling in my stomach. I'm just wondering what could cause my resting heart to drop by 15 all of a sudden and make my tablets that id been taking for years suddenly too strong.

If i get up and walk it will go to 120 the other day it went to 160 but I'm assuming it's because I came off my tablets so quick but I feel fine all in all its just my heart will still keep dropping into the 50s when before it would be 73 ive spoken to my doctor he says it's because I'm young and fit but I do not exercise and the drop in rate is very sudden

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7 Replies

  • Posted

    Did you know what the cause for your pounding heart was to start with? Have you had an echocardiogram or any other tests?

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    • Posted

      Personally feel it was caused by weed i smoked for about a year when i was 16 they told me it was because I was growing and that i had a sensitivity to adrenaline and that it should stop after ive fully finished puberty which it miraculously has but the sudden slowing with it is strange. I've had loads of ecg's an echo and stress test about 3 years ago. Currently have a LINQ monitor implanted so I hope they'll see what is going on

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    • Posted

      Do you know what your blood pressure is? It might not be a bad idea to get a bp monitor that tests for irregular heartbeats too. Beta blockers lower your bp so now you are off them it maybe changing which could affect your heart rate. You have only been off them 2 weeks so your body will still be adjusting if you were on them for a couple of years. Give it a couple of months and see how you are then. Keep an eye on your blood pressure and pulse to see if it changes much, but don't do it all the time, write down what it is every week. You will get a more accurate measure then.

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