Abstract: Objective To analyze the characteristics of perioperative infection and related factors of perioperative infection in elderly patients with breast cancer(age≥65 years).
Methods One hundred elderly patients with breast cancer were enrolled.The infection,positive bacteri,and the factors affecting perioperative infection was observed.
Results A total of 19 cases(19.0%) of perioperative infection occurred,wound infection has the highest rate with 9 cases(47.4%)，followed by respiratory tract infection(5 cases,26.3%).A total of 28 bead pathogens were detected,with Gram-negative bacteria being the most common(17 cases,60.7%).The age,lymph node metastasis,operation time,diabetes,preoperative hemoglobin level,preoperative albumin level,hospital stay,drainage tube drainage,and surgical procedure were statistically significant between two groups(P<0.05).Age,operative time,diabetes mellitus,preoperative hemoglobin level,preoperative albumin level,and surgical procedure were independent factors influencing perioperative infection of elderly breast cancer(P<0.05).
Conclusion Age >75 years,operation time>2h,with diabetes,preoperative hemoglobin level ≤70g/L,preoperative albumin level ≤35g/L,surgical procedure are risk factors for perioperative infection in elderly patients with breast cancer.

Key words: breast cancer, perioperative period, infection, influencing factors, elderly