Tag: Massive transfusion protocol

In some extreme medical emergencies, a patient may require dozens of blood units to replace massive blood loss, with a peak of 68 units reported in a trauma study. The answer to **how many units of blood can you transfuse at once?** is not a single number, but is determined by the patient's critical condition and the specific medical protocol being followed.

Medical professionals know that stored blood, kept at cold temperatures to preserve it, must be warmed before being transfused. Infusing cold blood can significantly lower a patient's core body temperature, leading to a host of dangerous physiological reactions. This is a particularly critical concern in emergency situations, where rapid, large-volume transfusions are often necessary.

While there is no fixed number that defines the upper limit for a blood transfusion in a single day, a medical term called a "massive transfusion" is often used to describe cases requiring large volumes. This guide clarifies the factors determining **what is the maximum blood transfusion per day**.