Divided into two groups based on acute kidney injury: non-acute kidney injury group vs. non-acute kidney injury group. Acute kidney injury group, Acute Kidney Injury Network (AKIN), Risk, Injury, Failure, Loss of kidney function, and End-stage kidney disease (RIFLE), or Kidney Disease: Improving Global Outcomes (KDIGO) I would like to divide it according to the definition. After testing the normal distribution of patients, donors, grafts, types of immunosuppressants, surgery/anesthesia factors, and blood test findings between the two groups through the Shapiro-Wilk test, continuous data was tested using the student t-test or Mann-Whitney U test. Sizes are compared using , and categorical data is compared with proportions using the χ2 test or Fisher's exact test. Analysis of factors related to acute kidney injury will be performed through univariate and multivariate logistic regression analysis.

Inclusion Criteria:

• Adult patients aged 19 years or older who underwent kidney transplant surgery in the operating room

Exclusion Criteria:

• Pediatric patients under 19 years of age
• Patients with multiple organ transplants, including kidney transplants
• Patients undergoing re-kidney transplant surgery
• Patient examination findings missing from electronic medical record

Adult patients aged 19 or older who underwent kidney transplant surgery in the operating room of Seoul St. Mary's Hospital from January 1, 2016 to March 28, 2022.