Heart Rhythm Community
Severely increased left atrial volume, and PACs
About This Community:

This patient support community is for discussions relating to heart rhythm issues, arrhythmia, irregular heartbeat, implanted defibrillators, pacemakers, and tachycardia.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
Blank Blank

Severely increased left atrial volume, and PACs

I am a healthy, fit, and very active 47 year old woman--healthy lifestyle and diet, runner, and I ride my bike for transportation. Resting HR of 52. PACs started a few weeks ago, so got a Holtor which reported over 4000 PACs/24 hours (that was half of what they had been previously), sleeping HR went as low as 41. Had an echocardiogram the other day, and everything was normal, except: "severely increased left atrial volume." Mysteriously, left atrial *size* (i.e., diameter) was normal. My appointment with the cardio doc is not for over a week, and in the meantime, my PACs have returned after a run (I took a break from running and PACs had subsided) and I'm quite concerned about this apparent result. I have examined the scientific literature and it seems that severely increased volume is indeed concerning and predicts all kinds of dire events. However, I came across no reports of increased volume without increased diameter, so the results are confusing.

The cardiologist I will see took a quick look at the results at the request of my doctor, and he said that since everything else was normal, the "severely increased LA volume" was "likely a mistake." But I sit here with my four year old, feeling these intense PACs, worried that it is, in fact, not a mistake and I have some worrisome condition.

Question: does anyone know if it is possible to have a severely increased left atrial volume with normal left atrial "size," i.e., diameter? Can this have anything to do with "athlete's heart"? I only run about 12-15 miles a week and don't bike more than a few miles a day, so I don't think I'm so well trained as to have athlete's heart (as far as I can tell).  I assume that many of you feel as I do--in the dark, with disturbing chest sensations, and scared of some sort of sudden death or stroke that will leave me unlike the woman I am now.

Thank you!

Tags: PAC, Left atrial volume, Heart, Holtor, echocardiogram
2 Comments Post a Comment
Blank
612551_tn?1247839157
I vote the warning is a mistake... I can't understand either how one can have more volume and no diameter change.  The diameter is the only measurement in an echo that I know of that check on chamber size, the diameter implies a volume.

No concern either I think about exercise, that works your ventricles not atrium chambers --- yes both operate at a higher rate but the ventricle does all the work.

A leaky mitral valve can cause left atrium size increase, suppose the corresponding valve in the RH side can cause the same.  An echo checks all valves, how do yours "look"?

I have added your post to my watch list so I can follow along, in the meantime I say go on with life it doesn't sound like you have anything to worry about, check yes,worry no.  
Blank
Avatar_f_tn
Hi Jerry,

This was my first post, so I appreciate such a rapid and sensible reply! In answer to your question, evidently everything (I assume including valves) was normal on my echo. I'm going to try to carry on normally until my appointment! I'll let you know how it turns out.

Thanks!
Blank
Post a Comment
To
MedHelp Health Answers
Recent Activity
86819_tn?1378951092
Blank
Healthscreen results
13 hrs ago by Bromley
6579347_tn?1388505968
Blank
mele48 One month anxiety-free! WOOT! Comment
Apr 16
1569985_tn?1328251082
Blank
DeltaDawn23 commented on MaryLL's status
Apr 15
Heart Rhythm Community Resources
RSS Expert Activity
242532_tn?1269553979
Blank
How to Silence Your Inner Critic an...
21 hrs ago by Roger Gould, M.D.Blank
242532_tn?1269553979
Blank
Emotional Eaters: How to Silence Yo...
Mar 26 by Roger Gould, M.D.Blank
1344197_tn?1392822771
Blank
Vaginal vs. Laparoscopic Hysterecto...
Feb 19 by J. Kyle Mathews, MD, DVMBlank
Top Arrhythmias Answerers
612551_tn?1247839157
Blank
Jerry_NJ
NJ
1423357_tn?1373023915
Blank
tom_h
Central, MA
1807132_tn?1318747197
Blank
michellepetkus
Chicago, IL
995271_tn?1312416925
Blank
itdood
PA
1569985_tn?1328251082
Blank
DeltaDawn23
Ann Arbor, MI
86819_tn?1378951092
Blank
Bromley