>Background: Nowadays, excessive blood intake is one of the most common problems in educational hospitals, causing issues such as the lack of proper distribution of blood products among centres, increases in costs and blood bank workloads. So, programs such as a Maximum Surgical Blood Ordering Schedule (MSBOS) were introduced to design a blood ordering schedule, which is a guide to normal transfusion needs for common surgical procedures. >Materials and Methods: This study was a descriptive cross-sectional study. The sampling method was designed and distributed among all sectors of the hospital. Each sector according to the demand for blood and cross-matched transfused units entered the rate of wasted and unused blood bags on the related forms. This study was performed on 1568 patients, of whom 562 (35/84%) were given blood transfusions. >Results: The aim of this study was to determine the pattern for the maximum surgical blood order schedule (MSBOS) for elective surgical procedures/in elective surgery cases in Imam Ali Hospital, Zahedan. This study was performed on 1568 patients, of whom 562 (35/84%) were given blood transfusions. The mean C/T ratio was 1.61 ± 0.99, the mean TI was 0.61 ± 0.38, and the mean T index was 36.4 ± 30.16%. >Conclusion: In general, only 55% of the blood units were used. Hernia surgery, thyroidectomy, and patients with renal problems had the greatest number of wasted units. Therefore, according to the results, indications of blood donation should be made correctly by health care personnel in all patients requiring a blood transfusion, and if there is an increased number of indications, packed cells are requested.
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