Introduction: The right use of BLOOD is necessary because of the high cost of correct BLOOD screening, BLOOD grouping, and cross match. The purpose of this study is to evaluate the rate of the reserved and cross matched BLOOD before elective surgeries which were done in Bahman 22nd Hospital. It also aims at evaluating the standard guideline for ordering BLOOD.Materials and Methods: This is a retrospective study from 1380 to 1388 that evaluates evaluating 6145 files of the patients hospitalized in 22 Bahman 22nd Hospital for surgery during the years of 1380 to 1388. The elective operations include General surgery, Gynecology, orthopedic, ENT, Urology and Neurosurgery. The number of patients, the number of reserved and cross matched units and the number of transfused units was recorded for each group of patients collected in each groups. Finally, the number of reserved BLOOD units in that period of time and in each group was compared with the standard guideline. Also the number of transfused BLOOD units was evaluated. The ratio of cross matched to transfused BLOOD units lower than 2.5 was considered as standard. And The obtained data were analyzed, using with SPSS.Results: A total of 1557 BLOOD units of BLOOD were reserved for 772 patients.1305 units (66.47%) were cross matched, but just 126 units (8.1%) were transfused. The effective factors in increasing the possibility of transfusion were the ages<20 & >80 years old, Hb £ 12, the type of surgery and the surgeon. Although after the application of the guidelines in1385, there was 64.44% decrease in the rate of cross matching rate due to the decrease in the number of patients who were cross matched, but the average of cross matched units for each patient did not change. The total of C/T index of the hospital decreased from 14.1 to 3.7.Conclusion: The appropriate correct BLOOD reserving can decrease the unnecessary BLOOD reserves, lower the pressure on BLOOD banking centers and prevent BLOOD wastage.

Background: Hypothermic perfusion is widely used in pediatric cardiac surgery units. The present study evaluated the effects of hypothermia severity on the serum levels of LACTATE during cardiopulmonary bypass (CPB) in the surgical repair of congenital heart defects in children. Methods: A total of 185 pediatric patients candidated for the elective surgical repair of congenital heart diseases were recruited. The patients’ arterial serum LACTATE, central venous pressure, diuresis, glucose level, and arterial BLOOD gases were measured and recorded at 4 time points: before CPB, in the cooling stage, in the warming stage, and after CPB and upon admission to the intensive care unit (ICU). Results: The mean age of the patients was 28. 1 ± 19. 6 months. The LACTATE level was significantly increased more quickly in the patients with hypothermia less than 30 ° C than in those with hypothermia of 30 ° C or greater (P < 0. 001). These 2 groups were significantly different in terms of the duration of CPB (P < 0. 001), the duration of cross-clamping (P < 0. 001), and the volume of the BLOOD filtered (P < 0. 001). No statistically significant difference in the volume of the red BLOOD cell transfused was observed between the 2 groups (P = 0. 12). Conclusions: Deep hypothermia is associated with higher BLOOD LACTATE levels, which may be associated with poor outcomes during and after CPB. It is recommended that normothermia or mild hypothermia be used during CPB in pediatrics. When the use of deep hypothermia is inevitable, patients should be strictly monitored and screened for adverse outcomes associated with hyperLACTATEmia.