Inclusion Criteria:  ≥ 18 years. Recipients of a cadaveric donor kidney transplant. Patients who are trained to give their informed consent.  Exclusion Criteria:  Recipients of a kidney transplant who do not authorize their participation in the study by informed consent. Recipients of a transplant of an organ other than the kidney. Patients with Bricker or Studer neobladders. Patients in need of intermittent self-catheterization prior to kidney transplantation. Any medical, psychiatric or family condition that, in the opinion of the investigator, may endanger or compromise the patient's ability to participate in the study. Pregnant or lactating patients. Having participated in clinical trials in the previous 3 months or participating in another clinical study promoted by the pharmaceutical industry, in which the promoter already establishes the treatment for UTI.