afib ....... enlarged heart right side no answers from cardio ?????

back in october 2010 i had a bout of lone afib that returned to normal on its own , on having more tests they fould that the right side of my heart has some minor dilatation on the right side , i have had ecg's echo's mri's holter monitors for 7 days , a bubble study , and they have all came back negative  so no valve problems , no avrd etc

afib is the only symptom ive had  ???  

is it possible that i just have a right side that falls just outside normal dimensions
also i used to hit the gym alot and lift heavy weights and rearly push myself to the point where my heart would boom out of my chest could this have maybe caused it ???????

the only other thing i can find on the net is pulmonary hypertension , but there is no family history of that and i now feel fine ....... if im right PH is a progresive disease and i feel much better from back in oct , as ive lost weight and live a much healthier lifestyle now


another question was could free diving cause this as i was on holiday and did a lot of free diving just before i ended up in hospital with the afib could the underwater preasure and holding my breath have caused it ???

any replys from anyone with simalar situations going on would be great or just advise from somone who knows the answers

thanks mark

sorry in advance if this is posted in the wrong palce its my first post
  

[Jerry_NJ]

Most of your speculations seem quite plausible to me, but I can confirm them.

Atrial Fibrillation is usually related to an enlarged left atrium, not the right ventricle.  You didn't specify how much of the right side is enlarged, or I missed it.  But, it is the ventricle that gets the "work out" when we push ourselves physically.  Sounds like you've done that.  I also note there is some correlation between AFib and extreme athletic activity, such as marathon or triathlon types of competition.  I suppose weight lifting and "free diving" may fall into that category.  I don't know anything about "free diving"  other than if I swim below the surface is never more that a couple of feet and never more than about 15 seconds....I don't like it under water.  I swim just enough to swim well enough to save myself if shore isn't more that a few hundred feet away.

[markg25]

please also note the minor dilation on the right side was 3mm  

thanks

[markg25]

i have also had a vq scan thats came back negative for blood clots

sorry just keep thinking of things too add

[Jerry_NJ]

Most of your speculations seem quite plausible to me, but I can confirm them.

Atrial Fibrillation is usually related to an enlarged left atrium, not the right ventricle.  You didn't specify how much of the right side is enlarged, or I missed it.  But, it is the ventricle that gets the "work out" when we push ourselves physically.  Sounds like you've done that.  I also note there is some correlation between AFib and extreme athletic activity, such as marathon or triathlon types of competition.  I suppose weight lifting and "free diving" may fall into that category.  I don't know anything about "free diving"  other than if I swim below the surface is never more that a couple of feet and never more than about 15 seconds....I don't like it under water.  I swim just enough to swim well enough to save myself if shore isn't more that a few hundred feet away.

[Jerry_NJ]

Correction:  make that "can't" in the first line as "..I can't confirm them."

[markg25]

hello there thanks for you answers .... it was said to be enlarged by 3mm with nothing on the left side .....  it just says right side on th letter i received ??? so not sure if its the RV or RA

im goin to see my cardio on the 29th of june so hopfully i get some answers then....

i mean is 3mm alot ??? he had to double check as he first thought the echo was being oversensitive ??

thanks mark