When I smoke weed my heartbeats so fast I can feel the chambers contract but it has only happened the past two times and prior to that I had a heart murmur or arrhythmia during a lacrosse game and now when I do day to day activities my heart beats abnormally fast. What s happening to me?
Hello, Smoking of weed itself can increase the hormones like a Chat Doctor.  Also in some patients it can trigger of anxiety attacks causing the symptoms you describe.  So refraining from smoking should be the ideal way out. Also, the cause of murmur should be evaluated, though most of the time its physiological .2 d echocardiography would be ideal test for the same. Regards