OR Environment & Room Setup

Clinical Objective

Prepare the operating room environment so that air handling, surface cleanliness, equipment placement, and personnel limits all support a controlled sterile field before the patient enters.

Why This Matters

Environmental contamination is invisible, and its effects compound over the case. The room must be ready before sterile setup begins, not adjusted around it.

Critical Control Points

• Positive-pressure ventilation confirmed functional before sterile setup

• Surfaces cleaned and disinfected between cases with approved agents

• Temperature 18–24°C and relative humidity 40–60%

• Equipment placed before sterile setup so movement during the case is minimized

Step-by-Step Protocol

1. 1

   Confirm positive-pressure ventilation is operating before any sterile setup begins.

2. 2

   Wipe down all surfaces with an approved disinfectant; allow contact time per the product label.

3. 3

   Verify temperature and humidity targets are within range.

4. 4

   Position large equipment (anesthesia machine, monitors, lights, suction) before sterile setup.

5. 5

   Stage instrument tables and supplies so the scrub technician can set up without leaning across non-sterile surfaces.

6. 6

   Confirm doors close fully and seal — repair any failure before the case proceeds.

Key Pitfalls

• Cleaning surfaces with insufficient contact time — the disinfectant did not work.

• Adjusting equipment position after sterile setup, requiring movement near the field.

• Beginning the case with a malfunctioning HVAC or door seal.

• Cursory cleaning between back-to-back cases.