Perioperative antibiotic prophylaxis in adults. Outline of the principal recommendations. National reference guidelines.

1Unit of Hepatobiliary Surgery and Liver Transplantation, Cardarelli Hospital, Naples, Italy; 2I Division or Surgery, Mauriziano Umberto I Hospital, Turin, Italy; 3Unit of Pediatric Surgery, S. Andrea Hospital, Rome, Italy; 4Unit of Neurosurgery, San Camillo Forlanini Hospital, Rome (SINch), Italy; 5Departement of Cardiovascular Surgery, Ospedali Riuniti, Bergamo, Italy; 6Unit of Day Surgery, S. Maria Hospital, Terni, Italy; 7Departement of Surgery, Tor Vergata University, Rome (SICADS S.I.C.), Italy; 8Deparment of Anesthesia and Resuscitation, University of Milan, National Cancer Institute, Milan, Italy; 9CeVEAS, Modena, Italy; 10Division of Orthopedics and Traumatology, Polyclinic S. Orsola-Malpighi, Bologna, Italy; 11Infective Risk Program Agency, Regional Division, Emilia-Romagna, Bologna, Italy; 12Istituto Superiore di Sanità ISS, Rome, Italy; 13Departement of Otolaryngology, University of Siena, Siena (SIO e Ch CF), Italy; 14National Institute for the Infectious Diseases Lazzaro Spallanzani, Rome (SIMIT), Italy; 15Departement of Molecular Biology, University of Siena, Polyclinic Le Scotte, Siena (AMCLI), Italy; 16Departement of Pharmacology, University of Milan, Milan (SIC), Italy; 17II Faculty of Medicine, University La Sapienza, Rome, Italy