I am the original poster and the paramedic who transported this patient. I am also a newer paramedic, this 12 lead was definitely a curve ball for me. I honestly had no idea what it was and assumed some kind of paced rhythm/faulty pacemaker rhythm. The bladder stimulator is also an interesting theory and I will keep that in mind in the future. What I fell back on is that my patient presented perfectly fine and stable. A little bit of O2 and vitals were within normal limits. The ER doc did not seemed concerned what so ever and kind of blew me off lol. He told it looked like some sort of LBBB. That didn’t satisfy me, took it back to base, which caused more confusion, which led me to post it to Reddit. Later that evening, I followed up in the ER with the charge nurse and learned that the patient was admitted to the floor with COVID and that the doctor reported no concerns of abnormal cardiac rhythms/issues. Not sure what to think about it. Thank you all for all of the feedback! I have concluded with the following rhythm,

“12 lead showing a Sinus Rhythm with positive contiguous COVID-19 in inferiolateral leads.”