I was curious by the reply to a past question on ejection fraction. I thought that EF was the blood pumped out of the heart during systole. So if a person has HOCM I understand the increase in contractility due to the change in chamber size and the need to maintain cardiac output. So I guess the EF could go up, but what a blockage to blood flow has to do with it?
Under which circumstances would an EF of 70%-75% be considered normal?
In addition to HOCM, what other pathologies could cause an hyperdinamic EF?
Thank you in advance for your reply
Dear Octavio, I answered your last question on increased EF and I think I may have confused you with my response. First, from the information you provided, I thought you have a normal heart. There was nothing to indicate that you have HOCM. I mentioned HOCM to be complete. Second, most methods used to calculate the EF do not specifically list the EF if it is > 60-65%, rather it's listed as >60%, etc. Thus, your EF could still be considered within normal limits. Third, other causes of hyperdynamic left ventricles are so rare that they are not worth mentioning. Finally, I suggest that you speak to your cardiologist/physician if you are concerned about having a hyperdynamic ejection fraction.
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