I have a few articles from NEMJ, NIH, and AHA regarding cardiovascular output and auxiliary effects of cannabinoids, but they're in print in boxes somewhere. I'll try to dig them up if I can.

I know I read many regarding prevention of atherosclerosis and reduction of vessel inflammatory markers in the blood as a result of cannabis use, in addition to the well-known effects on intra-ocular pressure from smoking. I don't know of any studies that directly deal with the heart itself, just vessel and bloodwork changes.

I'll go dig through them, this snow storm has given me reason to. Best of luck!