I am a grad student in cardiovascular research [although less active at the moment]. I also recently had a few heart palpitations, that I sought medical attention for.
This included EKG's in the hospital, wearing a holter monitor, getting a stress test, and an echocardiogram. Really neat things for an interested researcher.
"Being against torture ought to be sort of a multipartisan thing." -- Karl Lehenbauer, as amended by Jeff Daiell, a Libertarian