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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Heart Palpitations, SA Blocks, Increased Heart Rate, Pulse Rate Increased, Stressed, Affecting Sleep. On Euthyrox. What Does This Mean?

Hello, for 6 -8 weeks now I am having heart palpatations, which have according to the cardiologist) been diagnosed to be SA blocks. I only have these blocks in resting conditions, not during exercise or sport. In addition I have been having an increased heart rate (which seems to contradict the fact that I am having SA blocks Typ Mobitz) - but only when I am lying down. When I am sitting at my desk and I check my puls (using a Garmin heart rate monitor as well as feeling the radialis puls) am have a heart rate of about 50 (+/-5). As soon as I am going horizontal, I am having a higher heartrate (ca.80 +/-5) and no matter how long I wait, it won`t go down. I find this really weird and it upsets me - shouldn`t it be the other way round? i am female, 34yrs, very sporty. I am taking 50 microgram of Euthyrox every second day against an incipient thyroiditis. I am really worried, since my "faster heartrate" when lying down is causing me to sleep badly (I can hear the pressure in my hears....). My cardiologist doesn`t really seem to listen to what I am telling him. I could not manage getting another appointment with a different cardiologist any earlier than in 2 months time. Any advice?
posted on Mon, 6 May 2013
Twitter Tue, 7 May 2013 Answered on
Twitter Tue, 7 May 2013 Last reviewed on
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Cardiologist,  's  Response
Respected Ma'm
Thanks for your query to HCmagic.
It is not clear from your query that what degree of SA block you have? A sino-atrial exit block (SA block) has many reasons and a high vagal tone is one of them. The disappearance of block with exercise/ activities favors high vagal tone as a mechanism.
Yes you are right. Normal mechanism of body suggest that on lying down the heart rate should actually go down. But our anxiety/ anxiousness can disallow this normal mechanism! i would recommend that you ask your spouse/kids to count your pulse rate (through radial) once you are sleeping. I think that will settle the issue. If still it is higher than your average standing pulse rate, i would like to see on your 24 hours rhythm (via holter monitoring).
If you ever had blackouts/ blurred vision/loss of consciousness/ vertigo/ significant shortness of breath associated with these palpitations, please see your cardiologist at priority.
Hope i provided the relevant information. Feel free to discuss further.
Sincerely
Sukhvinder Singh
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Heart Palpitations, SA Blocks, Increased Heart Rate, Pulse Rate Increased, Stressed, Affecting Sleep. On Euthyrox. What Does This Mean?

Respected Ma m Thanks for your query to HCmagic. It is not clear from your query that what degree of SA block you have? A sino-atrial exit block (SA block) has many reasons and a high vagal tone is one of them. The disappearance of block with exercise/ activities favors high vagal tone as a mechanism. Yes you are right. Normal mechanism of body suggest that on lying down the heart rate should actually go down. But our anxiety/ anxiousness can disallow this normal mechanism! i would recommend that you ask your spouse/kids to count your pulse rate (through radial) once you are sleeping. I think that will settle the issue. If still it is higher than your average standing pulse rate, i would like to see on your 24 hours rhythm (via holter monitoring). If you ever had blackouts/ blurred vision/loss of consciousness/ vertigo/ significant shortness of breath associated with these palpitations, please see your cardiologist at priority. Hope i provided the relevant information. Feel free to discuss further. Sincerely Sukhvinder Singh