Has anyone had to use one of these holter monitors? I've had lightheadedness and disorientation for a while but the last week have had heart palpitations and shortness of breath also. Called my OB today and they said to go to urgent care to have it checked. UC drew a bunch of blood did an EKG and an echo. Everything looked alright but since I wasn't having an episode they set me up with a holter monitor for 24 hours. Like a portable EKG, to hopefully catch when it happens. I hate when it happenes but I hope they catch something.