I remember reading in one of the old bound volumes that I used to have from the 50's or 60's in which a questions from readers asked about blood transfusions and reference was made about a sister who received one and apparently back then in those days it was not a disfellowshipping offense. Im not at home so I cannot give the reference for it but over the years they have added to the list all different kinds of reasons you can be DF'd; going beyond what is written IMO.
LRG