Objective: Anesthetic management in DIEP-flap breast reconstruction surgery may influence the appearance of postoperative complications. Fluid therapy, vasopressor use, and blood management are controversial. The aim was to audit hemodynamic management and to assess its impact on perioperative outcomes. Material and Methods: Sixty-seven cases of DIEP-flap breast reconstruction were reviewed. Data collected: anthropometric data; ASA score; comorbidities; timing of reconstruction

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... d), type of reconstruction (unilateral/bilateral); length of surgery; per-operative complications; per-operative fluid therapy, use of vasopressors, transfusion rate; re-intervention requirements; surgical success rate; hospital stay, and readmission rate. Results: Median crystalloid infusion rate was 3.18 (2.63-3.76) ml/kg/h in the first 24 hours. Intraoperatively, colloids were administered in 35 (52%) patients at a median infusion rate of 1.40 (1.08-1.86) ml/Kg/h; 21 (60%) of them presented some postoperative complication. Hypotensive events were registered in 13 (19%) patients; 9 (69%) suffered some postoperative complication. The only vasopressor used was Ephedrine in 14 (21%) patients, at a median dose of 0 (0-6) mg. Red blood cell (RBC) transfusion was required in 18 (27%) patients. All of the patients who were transfused, 11 (61%) presented some postoperative complication. Hospital stay was 7 (7-9) days. Surgery was successful in 46 (69%) patients and readmission was necessary in 11 (16%) patients. Conclusions: Colloids administration, intraoperative hypotensive events, RBC transfusion, and delayed surgery are variables that could increase the risk of postoperative complications in our series.