Wanted to post a couple links for Transvenous Pacemaker insertion. I think it’s mentioned in at least 1 or both, but the preferred site as Tej mentioned is either the right IJ or the Left IJ, followed by the right subclavian, and lastly the left subclavian (save the left subclavian so they can put a permanent pacemaker in here).

This one is unfortunately completely silent, but is annotated well and also has the exact type of pacemaker box we have in the ED (Bay 1, bottom shelf).

This is the one Tej showed by Jess Mason @ EM:RAP.