Hey, Wildebeest. Thanks. I have a heart rhythm disorder myself, and I'm married to a cardiologist and am studying medicine myself, so I've picked up a lot of cardiology information over the years. I saw your other thread about this, which got taken down, as you may know by now, because of your email address and the numerous non-cannabis responses some jokers made in response to it.

I'm going to give you my standard answer that I give to everyone with health questions: ask your doctor and be candid with him about your cannabis use. I don't know the details of your particular situation, and you've not really given them above. I'm guessing you have some sort of extra conduction pathway like Wolff-Parkinson-White syndrome, perhaps, in addition to a beningn murmur?

If your doc said continuing with your prescribed ADD medicine is fine, that's good news. But cannabis affects different people different ways, and it sometimes triggers dysrhythmias and frequently speeds people's heart rates up right after it's smoked (an effect I think has more to do with the action of smoking itself and the effects that has on your oxygen levels than with the actual cannabis). With you already taking a stimulant like Adderall and having a conduction problem, and considering that it's very hard to know exactly what strain you may be smoking (sativas can cause more heart-racing/rhythm problems and anxiety than indicas), I think you should be very cautious about adding cannabis into that mix until you've heard what your doc has to say. Don't be afraid to tell him. He's not the police. But he does need to know, and if you're about to do the 24-hour Holter monitoring, you can tell him then. You just want to make sure you're not doing anything that's going to further complicate your heart electricity. If you plan to smoke anyway no matter what everyone says, try staying smoke free for three days before you wear the Holter monitor. Then, at some point in those 24 hours, smoke whatever would be a normal dose of cannabis for you and note that in the little Holter diary they'll give you and also note the corresponding counter number on the monitor. That'll help you know exactly when in the 24 hour report, which'll print out with the counter times, you smoked the cannabis. When you talk to the doctor after the Holter report comes back, tell him you're an occasional cannabis user (this isn't going to surprise or shock him) and that you happened to smoke during the Holter period between XXX and XXX time. Then see what he says. It's worth a try!