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.
Some programming languages manage to absorb change, but withstand progress. -- Epigrams in Programming, ACM SIGPLAN Sept. 1982