Surgical instruments laid out sterile

Surgical instruments laid out on a sterile field, ready for a medical procedure.

About this subject

Sterilization of surgical instruments is a critical process to prevent hospital-acquired infections. In Brazil, Anvisa sets strict standards for the central sterile supply department (CSSD), where instruments undergo cleaning, disinfection, and sterilization, typically in steam autoclaves. The organized layout on trays or sterile fields follows specific protocols: each instrument has a designated spot for easy access by the surgeon during the operation. Forceps, scalpels, retractors, and scissors are common items. The blue or green color of surgical drapes is not random: these colors reduce glare under bright lights and contrast with blood, improving visibility. The technique of setting up the surgical table is taught in the first years of medical and nursing school, being a cornerstone of patient safety. Proper sterilization and handling are estimated to reduce the risk of surgical site infection by up to 70%.

Frequently Asked Questions

What is the difference between sterilization and disinfection?

Sterilization eliminates all microorganisms, including spores, while disinfection reduces microbial load but does not kill spores. For surgical instruments, sterilization is mandatory.

How long does sterilization in an autoclave take?

Typically 15 to 30 minutes at 121°C or 134°C, depending on the load type and equipment. The total cycle, including drying, can take up to 1 hour.

Why are instruments arranged in a specific order?

The arrangement follows the sequence of use during surgery, allowing the surgeon to pick instruments without looking away from the operative field, optimizing time and reducing risks.