Dear elisaporquien
A warm welcome to JWN, where you doubtless will meet many varied, interesting and fine specimens of the human race.
Medicine it seems can be a very big and varied field especially if you take an "Integrative Medicine" approach.
I would hesitate to let such a small detail (such as blood transfusions) get in the way of my confidence and passion.
Yes, I know that Western medicine is in its infancy and we still have a lot of learning, growing and developing to do.
Mistakes have been made and will continue to be.
You should be free to be guided by your conscience and to reject bad medicine.
Psychiatry for example has a rotten history. Yet quite a number of Psychiatrists became involved in "anti-Psychiatry" and "Transpersonal Psychiatry" which defies the orthodox, reductionist, destructive and materialist mono-dimensional Western bio-medicine model.
I know, see and accept that there is a lot of hypocrisy, arrogance, authoritarianism and deception in Western bio-medicine. A lot is made of "evidence based medicine" yet the evidence of failure is simply ignored. For example 9 out of 10 Australians have a 100% chance of getting Chronic Disease and dying from it. The revolving door phenomenon in mental illness is somehow also not acceptable evidence of failure.
Still a passionate optimist can make the world of difference. As Margaret Mead observed: "Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has."
Australian Professor Barry Marshall was once a young, brash medical doctor who came up with the insane and unheard of idea of performing a biopsy on a stomach ulcer. Go figure! The medical establishment was positively mortified at this astounding and impertinent heresy which led to the most unfortunate discovery of the "Helicobacter Pylori" bacterium. Well after 23 years all the egos and chest beating had finally died down, and poor old Barry was awarded a Nobel prize for his shocking forays into medical heresy. Now let's not get started about all the avoidable stomach ulcer related deaths caused by the medical "orthodoxy of the moment"...
Having been a Watchtower religionist for more than 40 years, and having now come to faith, I can confidently assure you the Watchtower is dead wrong in seeking to prohibit blood transfusions, fractions and donations on any sort of spiritual basis where your prospects of eternal life depend on their latest whim and interpretation.
Medically however I would accept that a whole blood transfusion is (much like) an organ transplant with serious attendant complications and an avenue of last resort. I would also accept that the bumbling and stumbling Watchtower may have uncovered some worthy alternatives in use by surgeons who seek to pursue bloodless surgery where possible. Plasma Volume Expanders and so on...
Best wishes on your chosen field of study and career
Fernando