The OR Suite and Its Equipment

This is Unit Eleven of Tech in Surgery Prep. Unit Ten ended with a report that changed how a department counts. This unit turns to the room itself: its zones, its environment, and the equipment that must work before the patient arrives. Carry one idea through this lecture. A check done after the patient is asleep is a check done too late. A worked example near the end shows a team that found failing equipment in time, and did not need to know what was wrong to stop. By the end you will be able to describe the three zones of the suite and their rules. To name the equipment that holds the patient and lets the surgeon see. To explain electrosurgery, warming, imaging and compression devices. And to check equipment before a case, and respond when something fails.

Four entries on the zones of the surgical suite, the attire each requires, and the controlled environment of the room.

Three zones, walking inward.

TSC 251 Three Zones of the Surgical Suite

The surgical suite has three zones. The unrestricted zone is the outer area, where street clothes are allowed, such as admissions, offices and changing rooms. The semirestricted zone requires surgical attire, and the textbook places the preoperative and recovery units and medication rooms there. The restricted zone is the innermost: the operating rooms, scrub sinks, substerile rooms and sterile core, where attire, a head covering and a mask are required and access is strictly limited. Facilities draw the lines differently, but the rule holds: nearer the field, stricter attire and fewer people.

What the zones require you to wear.

TSC 252 Attire for Each Zone

Surgical attire is low-lint scrubs, a head covering over all hair, and a mask where required. Shoe covers are needed for shoes from outside the suite, impervious covers when heavy fluid is expected, and scrubbed staff wear no jewelry that could fall outside attire. Attire protects the patient from you, and you from the patient's fluids.

A controlled room.

TSC 253 Air, Temperature and Humidity

Operating rooms control temperature, humidity and airflow to reduce infection risk. Many use high-efficiency particulate air filters, and OSHA guidance cites a minimum of fifteen total air changes per hour. A cold room helps the team but chills the patient, so warming the patient is part of every case.

Who may come in.

TSC 254 Who May Enter the Restricted Zone

Access to the restricted zone is limited to people who need to be there and are dressed for it, in attire, head covering and mask. Visitors and staff with no role in the case stay out. Fewer people means less movement near the sterile field.

Four entries on the equipment that positions the patient and lets the surgeon see.

Holding the position.

TSC 255 Positioning Equipment in the Room

Positioning equipment supports and protects the patient in the position surgery requires. From the table outward: the operating table, which tilts, rises and rotates; headrests and skull clamps; armboards, adjusted so circulation is not compromised; stirrups for lithotomy; bolsters, gel pads and pillows that spread pressure; bean bags that mold around the patient; and specialty devices such as shoulder chairs and traction. Every device is checked before the patient arrives, because a missing gel pad found after induction delays the case or tempts improvising.

The table itself.

TSC 256 The Operating Table

The operating table adjusts to many surgical positions. It tilts head down or up, raises and lowers, rotates, and flexes or splits for positions such as jackknife and kidney. Its adjustments are checked before the patient arrives, because a table that will not move as needed cannot hold the position safely.

Seeing the field.

TSC 257 Lighting and Visibility

Operating room lighting is designed to give the team the best possible view of the operative site. Lighting and ergonomic design are priorities of the surgical environment, along with temperature, humidity and airflow, and like them, lighting is part of the controlled environment the whole team depends on.

Clearing the view.

TSC 258 Suction at the Field

Suction removes blood, fluid and debris so the surgeon can see. Sterile tubing runs from a tip on the field to the room's suction source, while the anesthesia provider keeps separate suction for the patient's mouth. Suction that is not working is found during setup, not when bleeding starts.

Four entries on devices that act on the patient: electrosurgery, its return pad, warming and imaging.

Cutting and coagulating with current.

TSC 259 The Electrosurgical Unit

An electrosurgical unit passes high-frequency current through tissue to cut it or stop bleeding with heat. It has a generator and a handpiece, switched by hand or foot pedal. In monopolar mode, the active electrode is at the site and the current travels through the patient to a dispersive pad. In bipolar mode, the two tips of a forceps are both electrodes, so only the tissue between them is in the circuit, no pad is needed, and it works in a wet field. Modern units stop current when pad contact is poor. It is often wrongly called cautery, but electrosurgery puts the patient in the circuit.

Where the current leaves.

TSC 260 The Dispersive Pad

The dispersive pad carries current safely out of the patient in monopolar surgery. It goes on clean, dry skin over a large, well-vascularized muscle near the site, avoiding bony prominences, scars, hair, metal implants and pressure points. A pad burn happens when heat under the pad is not dispersed, often from poor contact.

Keeping the patient warm.

TSC 261 Warming Equipment

Patients lose heat quickly in surgery, so warming equipment prevents hypothermia: warm blankets and drapes, forced-air and water-circulating devices, radiant warmers, and warmed fluids, gases and irrigation. They are used exactly as directed, because misused equipment can burn a sedated patient who cannot feel it.

Imaging in the room.

TSC 262 Imaging Equipment in the Room

X-ray and fluoroscopy units are brought into the room for imaging during surgery. When they are used, staff wear lead or lead-equivalent aprons and thyroid collars and step back as far as the work allows. Hands never go in the primary beam, even when holding a position for an image.

Eight entries on checking the room's systems, compression devices and cleaning, then two worked examples. The opening idea is paid off at the last.

The check before the patient.

TSC 263 Checking Equipment Before the Case

Every piece of equipment for a case is checked before the patient enters. Inspect electrical equipment and cords and remove anything that looks wrong. Test the electrosurgical unit, suction and lights. Confirm the positioning devices on the card are present and intact. Confirm the anesthesia equipment has had its daily check, which is the anesthesia provider's job, and that the sterilizers serving the room passed their daily tests. Check that a smoke evacuator is available if smoke will be produced. The scrub person and circulating nurse share this check, and anything that fails is replaced before induction.

An evacuator in every room.

TSC 264 Smoke Evacuators as Room Equipment

OSHA guidance calls for a smoke evacuator in every operating room where surgical smoke is produced. New tubing is used for each procedure, filters are replaced on the manufacturer's schedule, and the system is inspected regularly. An evacuator that is present but switched off protects no one.

Sleeves that prevent clots.

TSC 265 Sequential Compression Devices

Sequential compression devices are leg sleeves that inflate in turn to help prevent blood clots. The surgeon may order them, or protocols may require them for longer operations, and they continue after surgery. They go on before or at the start of the case, so they belong on the setup checklist.

Cleaning between patients.

TSC 266 Cleaning the Room Before a Case

The room is cleaned for the next patient, with surfaces disinfected under facility policy. Contaminated work surfaces are decontaminated after procedures, and at once after any spill. Noncritical surfaces, such as tables and equipment that touch only intact skin, are cleaned with a low-level disinfectant for its full contact time. Floors are kept clean and dry, and the room is restocked and checked. Each room also gets terminal cleaning at the end of the day. A room that looks clean is not the same as one disinfected for the required contact time.

The anesthesia machine.

TSC 267 The Anesthesia Machine and Scavenging

The anesthesia machine delivers gases and vapours, and a scavenging system removes the excess. The equipment is checked before each day's use, vaporizers are turned off when not in use, and spills of liquid agents are cleaned promptly. Leaks expose the whole team, so a smell of anesthetic gas is reported.

A robot in the room.

TSC 268 Robotic Systems in the Room

Robotic-assisted surgery uses a computer-controlled robot for very precise movements. The surgeon may operate from a console away from the table, while the bedside team prepares, drapes and manages the arms and instruments. Robotic cases add equipment and cables, so space, cords and sterile boundaries need extra planning.

The first case of the day.

TSC 269 Opening a Room for the First Case

A worked example, constructed for this course, begins at six thirty in the morning. Jamie and the circulating nurse enter in attire and confirm the overnight cleaning: surfaces clean, floor clear. They read the card for a hernia repair. The table moves as it should, and the armboards, gel pads and strap are in place. Jamie tests the suction; the electrosurgical unit passes its self-check, and the circulator sets out a pad of the right size, in date. The evacuator has new tubing, the warmer works, anesthesia checks its machine, and the sterilizers passed their morning tests. Only then does Jamie open supplies, checking each package first. Together the checks take about fifteen minutes, and nothing is discovered broken once the patient is asleep.

A unit that fails its self-test.

TSC 270 Equipment That Failed the Check

A worked example, constructed for this course, pays off the opening idea. During setup for a breast procedure, the electrosurgical unit alarms on its self-test, and Robin, the scrub person, notices a cracked section on the foot-pedal cord. Neither tries to make it work. The circulator labels the unit out of service and calls biomedical engineering, and a replacement passes its checks. Robin also points out that the pad on the cart is an adult size for a small patient, and the right size is brought. The case starts on time. The first unit had an internal fault. Robin and the circulator did not need to know what was wrong; they needed to recognize that something was wrong, and stop.

Look at what you can now do. You can describe the three zones of the suite, their attire, and the controlled air, temperature and access of the restricted zone. You can name the positioning equipment, the table, lighting and suction, and why each is checked first. You can explain monopolar and bipolar electrosurgery and pad placement, and the safe use of warming, imaging and compression devices. And you can run a pre-case check, clean the room for its full contact time, and respond to failing equipment by stopping, labelling and replacing it. Unit Twelve opens the instrument tray.