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  • peakvelocity

    Can anyone tell me how significant the peak velocity is as recorded on echo? What is the normal? Mine is 2.1 m/sec with a gradient of only 20 with a rise to 5.3 m/sec and a gradient of 120 with low dose Dobutamine on stress echo. Is it normal for there to be such increases and what exactly does peak velocity tell you? I assume it is the speed of blood flow across the LVOT but that doesn't mean too much to me. Thanks, Vickie

  • #2
    Re: peakvelocity


    I see you haven't gotten any responses to this query. Your questions are good ones and I suspect none of us has definitive answers, so I'd say you should put them on your list to ask your doctor.

    I think you're right that peak velocity is a measure of how fast the blood is flowing across the outflow tract. Since you have a gradient which increases with dobutamine, you must have an obstruction which enlarges with the dobutamine. (Dobutamine simulates what happens with physical exertion.) In my mind I liken it to a water hose: when I constrict the hose a bit, then the force and speed of the water past the constriction increases.

    Now, what that means for you, your heart, your treatment: Please ask the doctor!



    • #3
      Re: peakvelocity

      I am sorry I did not respond to this posting!! I some how missed it! OPPS!

      This is the highest amount of flow of blood measured in the heart, at a specific point. I would not spend too much time focusing on this.

      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)


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