Physical Environment and Safety Standards: Hazards in the Operating Room

Comprehensive vocabulary flashcards covering physical, radiation, electrical, fire, biological, sharps, and chemical safety standards in the operating room based on Chapter 4 of Surgical Technology for Surgical Technologists.

Ionizing Radiation

Radiation from sources such as fluoroscopy (C-Arm) and intraoperative X-rays; used in therapeutic dosages to treat cancer, but capable of causing bone, thyroid, and gonadal cancers, cataracts, and spontaneous abortions.

X-ray Film Badge (Dosimeter)

A monitoring device worn by surgical technologists to collect cumulative radiation exposure, which is periodically sent to an outside company for measurement; if allowed thresholds are exceeded, the technologist must remain away from radiation for a recommended time.

X-ray Cassette Holder

A mechanical device used to position and secure radiographic film cassettes intraoperatively, eliminating the need for OR personnel to hold the cassette directly in the radiation beam.

Lead Thyroid Shield

A protective lead collar fastened around the neck to shield the patient's and surgical staff's thyroid gland from ionizing radiation exposure.

Radiation Protocol for Pregnant CSTs

Guidelines requiring pregnant surgical technologists to avoid exposure, wear lead shielding, or leave the room during radiation; they must wear an X-ray film badge positioned specifically at waist level under the lead apron.

Lead Apron Storage Protocol

The requirement that lead aprons must be laid flat or hung on an apron rack when not in use to prevent cracking in the internal lead lining.

Lead Shielding Radiographic Integrity

The periodic radiographic evaluation of lead garments to detect internal cracks and structural damage that allow harmful ionizing radiation penetration.

Portable Lead Wall

A mobile radiation-blocking partition placed between operating room personnel and the radiation source to provide barrier shielding during fluoroscopy or radiologic procedures.

Distance (Radiation Protection)

A primary radiation safety principle stating that the further away a person stands from the X-ray machine, the less radiation exposure they receive; staff can also stand behind a lead wall or behind another person wearing lead.

Electrosurgical Unit (ESU) Grounding

The mandatory safety requirement that all electrical surgical equipment must be grounded to prevent stray electrical currents from passing through the patient and disrupting physiological systems, such as cardiac conduction.

Bovie Holster

A protective, non-conductive plastic holster kept on the sterile field to house the active electrosurgical pencil when not in use, preventing accidental activation, patient burns, or drape fires.

Dispersive Electrode (Grounding Pad)

A patient return electrode placed over a large, clean, dry, and shaved muscle mass (avoiding bony prominences and the heart), requiring a minimum of $3\text{ min}$ drying time if alcohol swabs are used to remove lotions.

Fire Triangle

The three components required for combustion in the operating room: Heat (ignition sources like lasers, ESU, or light sources), Fuel (patient tissue, drapes, alcohol prep), and Oxygen.

Surgical Fire Distribution

Statistical incidence showing that surgical fires occur most commonly in the patient's airway ($34\%$ as of 2013) and second most commonly around the patient's face and head ($28\%$ as of 2013).

Class A Fire Extinguisher

A fire extinguisher containing pressurized water designed specifically for extinguishing wood, paper, and textile fires.

Class B Fire Extinguisher

A fire extinguisher utilizing carbon dioxide or dry chemical agents designed for fires involving oils, gases, and flammable liquids.

Class C Fire Extinguisher

A fire extinguisher containing Halon gas specifically intended for electrical equipment fires.

P.A.S.S.

The standard mnemonic for operating a fire extinguisher: Pull the pin, Aim the nozzle toward the base of the fire, Squeeze the handle to discharge contents, and Sweep the nozzle back and forth at the base.

R.A.C.E.

The hospital emergency fire protocol: Remove/Rescue anyone from immediate danger, Alert/Alarm, Contain the fire, and Extinguish.

Laser Safety Standards

Precautions required during laser use, including posting 'Laser in use' warning signs, wearing specialized laser safety glasses, utilizing non-reflective instruments, keeping damp sponges and sterile water on the back table, using a laser ET tube for head cases, and packing the rectum with water-soaked sponges for anorectal cases.

Standard (Universal) Precautions

Infection control guidelines applied during any potential exposure to bodily fluids, requiring PPE (eye protection, masks, gowns, aprons, gloves) under the premise that all patients carry infectious pathogens like HIV, Hep B, or Hep C.

Type IV Latex Allergy

A localized, delayed-onset contact dermatitis reaction characterized by skin irritation in response to natural rubber latex.

Type I Latex Allergy

An immediate, severe systemic hypersensitivity reaction to latex characterized by hives, edema, tachycardia, hypotension, bronchospasms, and circulatory collapse.

Surgical Plume

Smoke and aerosolized vapor produced by cauterized or laser-ablated tissue; it can irritate the respiratory tract and transmit airborne viral particles such as HPV.

Smoke Evacuator

A vacuum filtration system operated by the surgical technologist whose capture nozzle must be held approximately $1\text{ inch}$ away from the origin of surgical plume to effectively capture smoke and particulate matter.

Sharps Safety Protocols

Operating room safety procedures that include indicator double-gloving, never recapping hypodermic needles by hand (using the one-handed scoop method), using blunt-tip needles for fascia and muscle closure, and loading needles close to the time of use.

Sharps Disposal Box (Needle Book)

A closable, numbered magnetic or adhesive counter box stored in a designated area on the back table to organize, contain, and accurately count sharps and blades.

Mayo-Hegar Needle Holder

A locking surgical instrument used to clamp suture needles, requiring pre-use inspection of its neck, shanks, ratchet mechanism, and box lock for cracks, wear, blood, or stains.

Post Exposure Prophylaxis (PEP)

Preventative antiviral medical therapy administered immediately to hospital staff following occupational exposure (such as a needle stick) to prevent contracting HIV or HBV.

Needle Stick Exposure Management

Immediate post-puncture procedure requiring the staff member to alert the team, hand off contaminated items, wash the skin wound with soap and water, prep solution, or alcohol, flush mucous membranes, and submit an incident report.

Eyewash Station

A dedicated plumbing station used immediately to flush blood, bodily fluids, or chemical splashes from the eyes and mucous membranes with water or saline.

Waste Anesthetic Gases (WAG)

Vapors escaping into the OR during anesthesia delivery, intubation, or extubation that can cause spontaneous abortions, cancer, renal complications, or nerve and brain damage; scavenged using an anesthesia gas-scavenging machine.

Polymethyl Methacrylate (PMMA)

A chemical bone cement composed of powder and liquid mixed during joint replacement and kyphoplasty; its vapors are carcinogenic, irritate the eyes and respiratory tract, and can damage contact lenses.

Formalin (Formaldehyde)

A carcinogenic and hepatotoxic preservative solution for tissue pathology specimens; it produces irritating vapors to the eyes, nose, and respiratory tract and must NEVER be placed on kidney stones.

Ethylene Oxide (EtO)

A liquid chemical converted into gas to sterilize heat- and moisture-sensitive surgical instruments; human exposure causes nausea, vomiting, and vertigo.

Glutaraldehyde (Cidex)

A liquid dialdehyde chemical sterilant and high-level disinfectant used for processing surgical instruments and flexible endoscopes.