I was diagnosed with Sinus Bradycardia in 2012, with a HR of 55, I was hospitalized for 16b days, with drops to the 30's. History of heart murmur diagnosed as Mitro valve Regurgitation or prolapse.
I had heart monitoring, stress test, treadmill, nuclear and Echo's, and Cath. Said there is nothing wrong. Well, if nothing is wrong then why am I back to where I was and working with more sever symptoms. 2013
I was recently retested through the tilt test, echo, now had event monitor for 21 days. Ultrasound no change ( which means it is the same and hasn't gotten any worse), Monitor test results will be on the 9th of August. Received message that monitor results were "essentially normal", what does this mean for an event monitor.
An does anyone know what would cause my rate to go to 42/47.... I can be sitting and reading a book or watching television and feel my heart race at 80, could this be because it is running low? And when it runs low I am always so tired, I feel so exhausted. Don't know if this means anything, but once in a while I take a gasp of air... Deep breath like I can't breathe.
Please help me to understand if there is anyone else who has these symptoms or have experienced these symptoms, what can I do?
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CDobay
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OK welcome to our world although essentially we deal with atrial fibrillation here and from what you say this is not your prime condition. We do, however, have a number of members with other cardiac issues such as yours either on their own or with AF.
Normal heart rate is defined as being between 60 and 100 beats per minute in adults but averages about 70 in a normal healthy adult. Athletes tend to have slower heart rates and I once during random population testing found a chap with a rate of 33 bpm. He was fit and healthy and in his 70s but was an ex lifeboat man so very fit.
Generally speaking sustained heart rates below 60 are bradycardia (Greek words used by medics to confuse us humans) and above 100 is tachycardia. Bradycardia will make you feel tired.
I am not medically trained but if you are not on any medication which makes your heart go so slowly then I would suggest that some intervention may be required up to and possibly including a pace maker so you need to keep banging tables till you get some answers.
i had occasional bradycardia without symptoms before progressing to flutter with bpm varying between 46/ 70 and 140 through the day. after successful cardioversion about 3 months ago I now have permanent bradycardia with bpm of around 47. I have no symptoms although my bpm does not go above 115 during exercise. since I have no symptoms I am gradually forgetting about it though I do find it strange that there is no explanation.
Today my rate high was 83, I woke with 76 and during the day dropped to 48. I have an appointment on the 9th. I really need to get some answers because I have what you call is symptomatic bradycardia with some tach.
I have permanent AF and tachycardiebrady syndrome that has also affected my mitral valve. My cardiac consultant recommended i have a pacemaker fitted which would kick in when my heart beat got as low as 59 beats per minute - controlling it by stopping it dropping to 40 beats a minute. In order to stop my heart beating up to 200+ beats a minute - they then upped the dosage of my beta blocker.
As we are all different - what has helped me somewhat might not be right for you. You need to do what I did - pay to see your usual cardiac consultant and ask for his advice.
Good luck - as I know how debilitating this syndrome is.
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Really low heart rate
Heart rate post exercise. 
low heart rate
Tachycardia 
