Why do individuals that are "scrubbed" for sterile procedures keep their hands above their waists?

Individuals who are "scrubbed" for sterile procedures maintain their hands above their waists primarily because the sterile field is considered to stop at the level of the sterile table or tray. This practice is essential to ensure that any items or areas above this level remain uncontaminated during a surgical or sterile procedure.

The hands are considered to be in a "contaminated zone" if they are lowered below the waist, even if they are sterile. By keeping their hands above the waist or at least level with the sterile field, scrubbed individuals help protect the integrity of the sterile environment, minimizing the risk of introducing microorganisms into the field.

This understanding is critical in maintaining the overall sterility of the procedure, thereby increasing patient safety and the likelihood of a successful outcome.