P>Background: There are so far no existing consensus guidelines regarding red blood cell transfusion during pediatric surgery, and there is a little information regarding red blood cell transfusion policy among pediatric anesthesiologists. Objectives: To determine the transfusion threshold and the volumes of packed red blood cell (PRBC) transfusion among French-speaking pediatric anesthesiologists. Materials and methods: A questionnaire of case scenarios was sent to active members of the French Language Society of Pediatrics Anesthesiologists (ADARPEF). Results: Of the 324 active members of the ADARPEF, 175 (54%) completed the questionnaire. The threshold for blood transfusion varied from 6 to 12 g center dot dl-1 depending on the scenario. The hemoglobin threshold for blood transfusion and the volume of blood transfused vary among ADARPEF physicians, for the same class of patients. The median [95% CI] hemoglobin threshold for starting blood transfusion was 7.9 [6.9-8.9], 7.3 [6.4-8.2], and 8.1 [7.0-9.2] g center dot dl-1 in the pre-, intra-, and postoperative phase, respectively. The median [95% CI] PRBC volume transfused was 11.7 [6.6-16.8] ml center dot kg-1, and the median hemoglobin target was 11.3 [9.8-12.8] g center dot dl-1. Physicians ranked age (79%), clinical tolerance of anemia (99%), underlying medical conditions (95%), hemodynamic instability (89%), hemostasis disorder (86%), and sepsis (79%) as the most significant factors affecting their transfusion decisions. Most pediatric anesthesiologists (89%) measure the hemoglobin level before PRBC transfusion. Conclusions: This survey identifies significant differences in transfusion practice patterns among pediatric anesthesiologists with a median transfusion threshold of 7.6 [6.6-8.6] g center dot dl-1 and a median PRBC volume transfusion of 11.7 [16.8-6.6] ml center dot kg-1.