Hello and welcome to HealingWell. I am sorry it has taken so long for your Dr's. to look further into your symptoms. That is so sad. I have anxiety as well and I have learned that any physician that blows me off the minute they see anxiety as one of my diagnosis is someone I am not interested in seeing again. Do be your own best advocate and make sure you have a trust relationship with your physicians.
I would strongly advise you to contact your Cardiologist or whoever order the Muga Scan and tell him you are feeling worse so they could bump up your scan as when sx are becoming worse you should be seen before someone that is stable. IMHO, this is just normal triaging of patients so make that call.
For the left and right ventricles to contract at the same time, an electrical impulse must travel down the right and left bundle branches at the same speed. If there is a block in one of these branches, the electrical impulse must travel to the ventricle by a different route. When this happens, the rate and rhythm of your heartbeat are not affected, but the impulse is slowed. Your ventricle will still contract, but it will take longer because of the slowed impulse. This slowed impulse causes one ventricle to contract a fraction of a second slower than the other.
The medical terms for bundle branch block are derived from which branch is affected. If the block is located in the right bundle branch, it is called right bundle branch block. If the block is located in the left bundle branch, it is called left bundle branch block . I believe this is what your Dr. was referring to.
Ejection fraction is a measurement of the percentage of blood leaving your heart each time it contracts. A normal LV ejection fraction is 55 to 70 percent. The ejection fraction may decrease if you have weakness of your heart muscle, such as dilated cardiomyopathy.
Please remember I am here to support you but I cannot take the place of your Dr.
I wish you peace and stick with us as we care.