If the problem was 'mild', I'd consider bloodless surgery - if a doctor recommended it or told me there wouldn't be serious consequences.
There is no blood given if it's not necessary. "Bloodless surgery" is a misnomer. All surgery is bloodless, unless a blood transfusion is necessary.
The only "bloodless surgery" that is special, is for the Jehovah's Witnesses. Do you not remember the case, just last year, of the child who was brought to the USA from Australia? Bloodless surgery, indeed. She is dead.