Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: Im a 32 year old male, smoked tobacco from 18-22 and switched to vaping, regular use of marijuana and no other drug use since age 22, I used to abuse cocaine. Went to the ER twice, once for a short lived but stabbing center chest pain, other visit I was sitting watching videos and my heart started pounding out of my chest and reach 150-160bpm, but absent of pain, both times EKG and X-ray were explained as unremarkable and was given an ER diagnosis of palpitations/anxiety. I went to my PCP yesterday and he asked if any of the ER staff mentioned a incomplete RBBB. I told him they did not, I reached out to ER doctor and he said the computer read out printed an incomplete RBBB on the paper but upon human examination it wasnt the case and was likely caused by me being underweight. My PCP said this is highly unlikely and ordered a chemical stress test and a cardiology appointment for May 5th, I trust my PCP but hes new to me so I dont know him very well. Can an EKG false read a RBBB or is my PCP correct to be suspicious? If I do have an Incomplete RBBB what does that mean for someone my age? Waiting on the next appointment is giving me anxiety and just want to understand more about whats happening. Thank you in advance for your help! I have a family history of stroke but not cardiac failure.. ### Response: An incomplete RBBB is generally a benign and incidental finding. I would not worry about it at all. I often dont mention it to patients if I see it on their EKG because it doesnt really meaningfully increase risk of anything nor does it typically indicate underlying cardiac disease. Think if it as simply just being the way your heart is wired..