Discussion Regarding Caths
Discussion Regarding Caths
Individuals with bicuspid aortic valve disease right now are part of an evolution in the understanding of this condition. In the medical literature, as well as in reading about the experience of other people, one quickly realizes that this is not a simple condition. I am glad that more and more aneurysms are being found in time because of a greater awareness that this may occur, and that it is not just a valve condition.
Perhaps some of you read the account of my husband's experience with his aneurysm surgery, which is posted on the aneurysm support site. I mention there that he did not have a cath prior to his aneurysm surgery. However, he did have all the testing needed to give a clear picture of his condition before surgery. Here is the link to that account for anyone who would like to read it.
http://www.westga.edu/~wmaples/velebir_arlys.html
Cardiac angiography is an important tool in profiling the condition of the coronary arteries. Before any cardiac surgery, it is important to know what is needed so that everything is addressed during surgery. If someone would benefit from bypass surgery of the coronary arteries, it is important to know that, as well as everything else, before going into the chest.
There is another screening tool, nuclear medicine, that is useful in looking at the coronary arteries, and it is less invasive than an angiogram. If the arteries are clear on this test, there is no need for anything more invasive. However, if after having a nuclear medicine test there is any question about the condition of the coronary arteries, the more invasive test may be needed to clarify whether or not there is blockage.
Like many things about bicuspid aortic valve disease, the reason is not clear, but most people who have it usually do not have any blockage of their coronary arteries. They generally will not need either stents or bypass surgery. However, there are some that will - they may have diabetes, have smoked, or have some other risk factor that creates plaque in their coronaries. Just to be sure, their coronary arteries should be checked, and the nuclear medicine test usually clearly reveals that their arteries are clean.
Diagnostic testing continues to move forward. Magnetic resonance, or MRI, has made great strides recently. Some centers now offer cardiac imaging, called cardiac MRA, along with MRI of the aorta. Cardiac MRA currently can be used to evaluate the heart valves and chambers. I believe work is underway to advance this technology so that it can also evaluate the coronary arteries, but that is not there today.
Diagnostic testing is an important area, and I hope that research will continue to move it forward toward more and more patient-friendly procedures. In the mean time, it is certainly possible to use the least invasive tests first. When it comes to the coronary arteries that may be all that is needed, especially if you have bicuspid aortic valve disease.
I should add that it is not possible to determine with any tests just how thin the walls of the aorta actually are when there is enlargement or an aneurysm. If the tissue is very thin, it could easily be damaged by a catheter. In an emergency, if a dissection has occurred but not been diagnosed, going in with a catheter is extremely risky because only the thin outer layer of the aorta is intact, and it would be very easy to puncture it. The coronary arteries themselves also may dissect during a cath procedure if the tissue is fragile.
Best Wishes,
Arlyss