Why does a heart rate go down after a catheter angiogram procedure?

Not true necessarily. I do angiograms almost on a daily basis. In the distant past, the contrast we used made the heart stop for a couple of seconds or would slow it down in some people (immediately after the injection); but that is a thing of the past anymore.

Related Questions

If a coronary ct angiogram Done at mayo clinic in Arizona says I have 0 plaque is it very accurate? My heart rate was 50, how good is that test? Help.

Coronary CTA. The study is pretty accurate in most people's hands. The statement 0 plaque means none imaged, there still could be some there that is missed, no test is perfect. In general a reading showing no disease is very good news. It doesn't mean one should ignore prudent diet, exercise and preventive medicine efforts. Read more...
Accurate. CT angio is accurate and your heart rate of 50 was really in the ideal range for the test. If you still have concerns may want to have a stress test that will show changes related to your heart related to higher work loads than at rest. Unless you have some familial lipid/cholesterol problems you are still fairly young to show plaques, though if you smoke you will accelerate their appearance. Read more...