Fundamentals of Nursing · Perioperative Nursing Care

Intraoperative Phase

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On this page 9 sections

In 30 seconds
Why this matters
The college version
Eli explains
Worked example
Key takeaway
Check yourself
Study tools
Sources & references

In 30 seconds

The is the middle period of the surgical experience: it begins when the patient is transferred to the operating room (OR) bed and ends when the patient is moved to the post-anesthesia care unit (PACU). During this phase the patient receives anesthesia, the surgical procedure itself is performed, and a specialized team works together to keep the patient safe, comfortable, and protected from infection and injury.

What makes this phase unique is that the patient is usually asleep or sedated and cannot speak for themselves. Everything that protects them — sterile technique, correct positioning, accurate counts of sponges and instruments, correct-site verification — depends on the discipline of the team. For the nursing student, the intraoperative phase is the clearest lesson in how preparation, teamwork, and vigilance turn a high-risk situation into a routine one.

Why this matters

The OR is one of the highest-risk environments in health care: anesthesia, infection, positioning injuries, burns from , and the possibility of a foreign object being left inside the body. Because the patient cannot report problems, the team must prevent them. This topic also matters for exams and practice because it defines who does what — knowing the difference between the and the , and knowing when a happens, are classic test points and the details that keep real patients safe.

The college version

Core Concepts

The surgical team and its roles

A typical team includes:

Surgeon — performs the procedure and leads the surgical team.
Anesthesia provider — an anesthesiologist or certified registered nurse anesthetist (CRNA). This provider induces anesthesia, monitors the patient's breathing, heart function, and level of anesthesia throughout the case, and manages emergence (waking) at the end.
Circulating nurse — a registered nurse who works unsterile and coordinates the room. The circulator obtains supplies, positions and monitors the patient, performs and documents counts, handles specimens, and acts as the patient's advocate. The circulator must never touch the .
Scrub person — an RN or surgical technologist who is sterile and hands instruments to the surgeon while guarding the sterility of the field.

Other team members may include surgical assistants and anesthesia technicians. Scope note: who may fill each role, and what tasks a circulating nurse may delegate, varies by state/province regulations and institutional policy — always practice within your own license and your facility's rules.

Zones of the operating room

ORs are divided into zones with escalating cleanliness requirements:

Unrestricted zone — street clothes are allowed; this includes the holding area where patients wait before surgery.
Semi-restricted zone — scrub attire and surgical caps are required; includes corridors and storage areas.
Restricted zone — the OR suites themselves. Scrub attire, caps, and masks are worn, and sterile supplies are opened only here.

Surgical asepsis and the sterile field

(sterile technique) means keeping an area free of all microorganisms, which is stricter than medical asepsis (clean technique). Key principles:

A sterile field is created by draping the patient; only sterile items may touch it.
Sterile team members face the field and do not turn their backs on it; they keep their hands and arms within commonly taught boundaries (roughly waist to chest height) and avoid reaching across the field.
The outer edge of a drape (about one inch, per common teaching) is considered nonsterile.
Any breach of sterility — a dropped instrument, a turned back, a torn glove — must be spoken up about and corrected immediately.
Before gowning and gloving, team members perform a surgical hand antisepsis (scrub) to reduce organisms on the hands and forearms.

Patient safety routines in the OR

Verification and time-out. Before surgery, the patient, procedure, site, and consent are verified. Immediately before the incision, the entire team pauses for a time-out to confirm them aloud — a standard safety practice that prevents wrong-site and wrong-patient surgery.
Surgical counts. Sponges, sharps, and instruments are counted before the procedure and again before closure. Any mismatch must be resolved before closure to prevent retained items.
Positioning and fall prevention. The patient is positioned to give the surgeon access while protecting nerves, bony prominences, and circulation, using padding and safety straps. Falls from the OR table are prevented with careful transfers and straps.
Medication safety. Medications on the sterile field are labeled as soon as they are drawn up, and verbal orders are repeated back. Allergies are confirmed before induction.
Thermal safety. The anesthetized patient cannot shiver to stay warm, so teams work to prevent hypothermia (warm blankets and other measures per institutional policy), because cold patients have more complications.
Fire safety. The OR contains three elements of the fire triangle: an oxidizer (oxygen), an ignition source (electrosurgery or laser), and fuel (drapes, alcohol-based skin preps). Alcohol-based prep solutions must be allowed to dry before draping to reduce fire risk.

Monitoring, documentation, and advocacy

The anesthesia provider continuously monitors vital signs, oxygenation, and depth of anesthesia. The circulating nurse documents the patient's position, skin condition, counts, medications, specimens, and events of the case. Most importantly, the circulating nurse is the patient's voice: when the patient cannot speak, the circulator speaks for them.

How It Works / Step-by-Step Process

The patient is transported to the holding area, where identity, records, consent, allergies, and fasting status are verified.
The patient is transferred to the OR bed, positioned for the procedure, padded, and secured with the safety strap.
Anesthesia is induced, and the airway and monitoring are established.
The team performs the time-out immediately before the incision.
The procedure is performed; counts are tracked; specimens are labeled.
The site is dressed, anesthesia is lightened, and the patient begins to emerge.
The patient is transferred to the PACU with a structured report from the circulating nurse and anesthesia provider.

Common Confusions

Do not confuse	With	Difference
Intraoperative phase	Preoperative phase	Intraoperative is the surgery itself (in the OR); preoperative is everything before it.
Circulating nurse	Scrub person	The circulator is unsterile and coordinates; the scrub person is sterile and handles instruments.
Medical asepsis	Surgical asepsis	Medical asepsis reduces organisms (clean); surgical asepsis eliminates all organisms (sterile).
Time-out	Preoperative verification	Verification happens beforehand in the holding area; the time-out is the final pause immediately before incision.
Patient transferred to PACU	Patient discharged from care	Transfer to the PACU ends the intraoperative phase but the patient is still recovering (postoperative phase).

Eli explains

The same idea, in plain words

Explain it like I’m 10

The intraoperative phase is the part where the patient is asleep on the operating table and the surgery actually happens. It is like a pit crew: one nurse works clean and unsterile, fetching tools and writing everything down, while another stands sterile and hands the doctor the instruments. Before starting, the whole team pauses to double-check they are operating on the right person, and they count all the tools so nothing is left inside by mistake.

Worked example

Mrs. Delgado, 47, is scheduled for a laparoscopic cholecystectomy. The circulating nurse confirms her identity with two identifiers, verifies that her consent matches the planned procedure, and checks allergies and fasting status. In the OR, the team positions her with padding and secures the safety strap; the anesthesia provider induces anesthesia.

Before the first incision, the surgeon calls for silence: "Time-out." The team confirms aloud the patient's name, the procedure, and the consent. The scrub person hands instruments while the circulator tracks the initial sponge and instrument counts. When the gallbladder is removed, it goes into a labeled specimen container. Final counts match the starting counts, the small incisions are dressed, and the circulator gives the PACU nurse a structured report: procedure performed, medications and fluids given, counts correct, and allergies.

Key takeaways

The three phases of perioperative care are preoperative, intraoperative, and postoperative; the intraoperative phase runs from transfer to the OR bed until transfer to the PACU.
The circulating nurse is unsterile: coordinator, documenter, and patient advocate. The scrub person is sterile: instruments and field integrity.
Surgical asepsis means a field free of all microorganisms; any breach must be corrected and spoken about immediately.
The time-out happens immediately before the incision and confirms patient, procedure, site, and consent.
Counts of sponges, sharps, and instruments occur before and after the procedure to prevent retained items.
Positioning protects nerves, skin, and circulation; safety straps prevent falls.
The OR fire triangle is oxidizer + ignition source + fuel; alcohol preps must dry before draping.
The anesthetized patient cannot advocate for themselves — the circulating nurse is their voice.

Check yourself

5 review questions from the chapter. Try each one, then open the answer.

What events mark the beginning and end of the intraoperative phase?
Show answer
It begins when the patient is transferred to the OR bed and ends when the patient is transferred to the PACU.
Why must the circulating nurse never touch the sterile field?
Show answer
The circulating nurse is unsterile; touching the sterile field would contaminate it and increase the patient's risk of infection.
What is the purpose of the time-out, and when does it occur?
Show answer
The time-out is a final pause immediately before the incision to confirm the correct patient, procedure, site, and consent aloud, preventing wrong-site and wrong-patient surgery.
Why are surgical counts performed, and at what two points?
Show answer
Counts prevent instruments, sponges, or sharps from being retained in the patient; they are performed before the procedure begins and again before the incision is closed.
List the three elements of the surgical fire triangle and one way nurses reduce fire risk.
Show answer
Oxidizer (oxygen), ignition source (electrosurgery/laser), and fuel (drapes, alcohol-based preps). Nurses reduce risk by letting alcohol-based skin preps dry completely before draping.

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Study tools & related lessonsKey vocabulary · Related

Key vocabulary

Intraoperative phase: The period of the surgery itself, from transfer to the OR bed until transfer to the PACU.
Circulating nurse: The unsterile RN who coordinates the room, documents, and advocates for the patient.
Scrub person: The sterile team member who hands instruments and guards the sterile field.
Sterile field: The draped area that is free of all microorganisms; only sterile items touch it.
Surgical asepsis: Technique that eliminates all microorganisms from an area.
Time-out: A final pause immediately before incision to confirm patient, procedure, site, and consent.
Surgical count: Counting of sponges, sharps, and instruments before and after the procedure.
Electrosurgery: Using high-frequency electrical current to cut or coagulate tissue.
Time out: A final verbal confirmation of correct patient, procedure, and site immediately before incision

Sources & references

openstax.org — Fundamentals Nursing

This lesson was adapted from the open educational references above; their licenses and attributions are preserved. See Copyright & Licensing.

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