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Difference between HOCM & Dilated Cardiomyopathy


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  • Difference between HOCM & Dilated Cardiomyopathy

    What's the difference between HOCM ( which I was diagnosed with 3 yrs ago) and dilated cardiomyopathy. I was comparing my last two echo results taken at Cleveland and noticed on both that my ejection fraction was only 55% on both. ( I have read that anything lower than 62 is suggestive of dilated cardiomyopathy. Also, on my last echo it was noted " The left atrial cavity appears mildly dilated. The left atrial cavity area is 25.0 cm during systole. What does that mean and is it bad? I saw Dr. Lever and before that I was seeing Dr. Asher but neither of them have ever indicated that this was something to be concerned about but as I read these echo reports over the last two years it seems I'm getting worse. It says I have severe hypertrophy of left ventricular and I am obstructed. I cannot exercise and the last two stress tests at the clinic were stopped because of a drop in blood pressure but Dr. Asher still did not seem concerned. I have read here that may be a sign of risk for sudden death. I have never fainted and there are no deaths in my family so I have been evaluated as low risk but sometimes I wonder if this is correct. Guess I'm just looking for some thoughts on this besides mine.

  • #2
    Re: Difference between HOCM & Dilated Cardiomyopathy

    You have HCM - most people with HCM have a dilated left atria. Your Ejection Fraction should be 50% or greater - those with HCM may have EF's that are higher.
    Do not worry - it looks like good ole HCM from here
    Knowledge is power ... Stay informed!
    YOU can make a difference - all you have to do is try!

    Dx age 12 current age 46 and counting!
    lost: 5 family members to HCM (SCD, Stroke, CHF)
    Others diagnosed living with HCM (or gene +) include - daughter, niece, nephew, cousin, sister and many many friends!
    Therapy - ICD (implanted 97, 01, 04 and 11, medication
    Currently not obstructed
    Complications - unnecessary pacemaker and stroke (unrelated to each other)


    • #3
      Re: Difference between HOCM & Dilated Cardiomyopathy

      Thanks Lisa! I am sooo grateful for this board! So much knowledge and valuable information plus so many good and caring people here. You can't ask for anything more!