The tag alias #64950 ekg -> electrocardiogram has been approved.
Reason: One is a common acronym of the other. Both are in roughly equal use (ekg 37, electrocardiogram 33), but I believe "electrocardiogram" should be the canonical one.
EDIT: The tag alias ekg -> electrocardiogram (forum #382253) has been approved by @furrypickle.
Updated by auto moderator