Steve,
I cannot give you good advice with the information provided, but I will try to provide some clarification.
If you have had "almost constant discomfort" for a long period of time, say months, then either a stress echo or a nuclear test would be fine. If, on the other hand, the discomfort started just recently, then a catheterization procedure might make more sense. However, your doctors should give you guidance in making this decision. An internet consultation cannot substitute for a real doctor seeing you in person.
Angioplasty means that someone is planning to open up an artery with a balloon. What the doctors are recommending to you is not angioplasty, but a cardiac catheterization ("cath" for short). This procedure involves putting a small tube into your artery, usually in the right leg, and then threading a smaller tube up to the heart arteries to take pictures of them. The risk of a major complication from this procedure is somewhere around 1 per 1,000, depending on where you have it done and under what circumstances. If a blockage is found, then angioplasty might be one of the options available to help relieve the discomfort.
Good luck.
If you suffer from restinosis further down the line, you will only have the option of further procedures or bypass surgery.
You should have clear guidelines as to when and where your cardiologist will place a stent before undergoing the procedure.
If you just have "abnormalities" or below 50% blockages, a regimen of aggressive lipid control, exercise, and lifestyle changes may be the best long term option.
With multiple lipid control drugs you can now control your lipids at any desired level. By maintaining ultra-low ldl and triglyceride levels over a period of years and exercising you can stabilize and reverse coronary artery disease.
Just remember that there is no magic cure for CAD. Stents have side effects and a high risk of restinosis possibly leading to further invasive treatments.
Good Luck.
I have an appointment on Monday to have Cardiac Catheterization. The cardiologist that I have seen (who I feel very comfortable with) has indicated that the results of the treadmill stress ekg showed significant enough abnormalities that this direction was far more prudent than doing either the echo or nuclear tests as he did not want to put added stress on my heart. (The choice was obviously left to me.)
During the test my by BP went to 138/90. I am usually at about 118/75. My resting pulse is 60. My discomfort is in three areas. I feel heaviness in my chest. I will have periods of pain in the area of my heart that will occasionally reach a perceived 4 on the pain scale but are more often at a1 or 2. During the tredmill test I actually felt better until the very last part of the six minutes when the pain was about a 1. There has never been an extension of pain down my arm or any form of sweating. (I have had the pain radiate into my left arm pit.)
Thanks to all for your responses