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SVT, migraines, Holter
I posted awhile back about having SVT, which my internist at the time found to be linked with my anemia and dehydration while marathon training. I ran the marathon and everything was great. Since June, I've had just a handful of SVT episodes.

I have noticed a few times recently that my HR has gone up to like 120 just while standing, and then back down to 60 when sitting. Makes me feel dizzy sometimes and short of breath.

We moved across the country, and for the past few months I've been having migraines 2-4 times per week. Finally went to a new internist here and he gave me sumatriptan for the migraines and because of my medical history (and family history which is ridden with heart issues on both sides) referred me to a cardiologist/EP. I go at the end of the month. My internist recommends a subcutaneous Holter for a week.

I'm happy I'm finally seeing a specialist about this. Anyone have experiences with the migraines and/or Holter implanted below the skin?
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1807132 tn?1318747197
I have no experience with the week long subcutaneous holter but I would check out the dysautonomia condition.  Troubles regulating heart rate and migraines are a few of the symptoms.  It is really not a heart condition but rather a condition that affects the beating of the heart.  Were you told what type of svt you have?  Do you know what your heart rate is when you fall into the svt?  I wonder if it is afib since it is a rapid pulse but not all beats are counted so your rate may be faster but is only captured as 120 beats but would explain your feeling dizzy and short of breath at 120bpm.  I can get short of breath easy generally over 120 but I don't get dizzy.   But it is odd that it would go back down to 60 once you sit.  I wouldn't think afib would do that but I am not totally educated on afib as my svt was avnrt.  In any event it is good you are getting this diagnosed so you can at least in the minimum know what you are dealing with.  Good luck and check out the dysautonomia condition and see if it fits.  I believe a tilt table test is a good way to diagnose if this is the problem.  Take care and keep us posted on how you are doing.
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Thank you for your response! I was told my SVT was pSVT and not something to be really concerned about. A-fib wasn't even mentioned. My HR when I go into SVT is usually 145-165.

Thanks for your help. I go to the cardiologist at the end of the month.
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1807132 tn?1318747197
The p really just means random and not sustained tachycardia, meaning you don't have it all the time, it comes and goes.  The rate you have could indicate WPW wolf parkinsons white syndrome.  But it likely would not decrease upon sitting.  That would be sinus tachycardia.  Well good luck at the cardiologists and let us know how it went.
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