Surgical techniques that do not require blood transfusions are becoming more and more popular, according to an article on MSNBC. Surgeons use a variety of techniques and technologies to minimize or remove the need for costly blood transfusions during surgery.

These bloodless operations were once only available to Jehova’s Witnesses, who’s religion prohibits blood transfusions, but are now being offered tothe general public at many hospitals.

Transfusions are very costly, and also carry a risk of rejection by the patient. Many people opt to have transfusions of their own blood, drawn in advance, before a surgery. Bloodless surgery techniques save money and are better for the patient.