Surgical safety checklist: a guide for nursing students

Every year, an estimated 234 million major surgeries are performed worldwide. Despite advances in anesthesia, technique, and monitoring, complications from surgery — including wrong-site procedures, retained surgical items, and preventable infections — remain a persistent threat to patient safety. A significant proportion of these complications are preventable with a single structured tool: the surgical safety checklist.

The WHO Surgical Safety Checklist, introduced in 2008, provides a standardized three-phase verification process performed before anesthesia, before the first incision, and before the patient leaves the operating room. For nursing students, understanding this checklist is not just useful background knowledge — it is a clinical skill you will practice in the OR, and a topic that appears regularly on the NCLEX in management-of-care and safety questions.

This article covers the checklist structure, the surgical count protocols that support it, the circulating nurse’s role, and the NCLEX traps that trip up students who only partially understand the process.

Background and evidence

WHO Safe Surgery Saves Lives (2008)

The WHO Surgical Safety Checklist was developed as part of the WHO Safe Surgery Saves Lives initiative and published in 2008. The development team, led by Atul Gawande, designed the checklist after identifying that the most common causes of surgical harm — wrong-patient and wrong-site procedures, anesthesia errors, surgical site infections, and retained foreign bodies — were preventable with structured communication.

A landmark study published in the New England Journal of Medicine (Haynes et al., 2009) evaluated the checklist across eight hospitals in eight countries spanning diverse economic settings. The results were striking: inpatient complications fell from 11.0% to 7.0%, and in-hospital mortality dropped from 1.5% to 0.8%. The checklist did not require new technology, additional staff, or extra time — it required disciplined communication.

The Joint Commission Universal Protocol

In the United States, the Joint Commission’s Universal Protocol reinforces many of the same requirements through binding accreditation standards. The Universal Protocol has three components:

1. Pre-procedure verification: Confirm the correct patient, procedure, and site before the procedure begins.
2. Marking the operative site: The surgeon marks the site before the procedure, ideally with the patient’s participation.
3. A time-out: A pause, performed immediately before incision, during which the entire team verbally confirms key safety items.

The Universal Protocol is not optional. It applies to all invasive procedures performed in accredited settings, including procedures done outside the OR (endoscopy suites, radiology, ambulatory settings). Failure to complete the time-out is a surveyable event, and skipping it when a count discrepancy exists is a serious patient safety breach.

National Patient Safety Goals

Wrong-site, wrong-procedure, and wrong-patient surgery (WSPE) is classified by the Joint Commission as a sentinel event — an unexpected event that results in death or serious physical or psychological harm. NPSG.01.01.01 requires two-identifier patient verification before any procedure. Site marking and time-out requirements are embedded in the Universal Protocol standards, not a separate NPSG, but both feed into the broader sentinel event prevention framework.

The 3-phase WHO checklist

The checklist is divided into three phases, each with a distinct trigger point and distinct team composition. Understanding exactly what happens in each phase — and who is responsible — is the foundation of safe OR nursing practice.

Phase 1: Sign In (before anesthesia induction)

The Sign In occurs before the patient is anesthetized. At this stage, the patient is awake and able to participate in verification.

Patient identity and consent: The circulating nurse confirms the patient’s identity using two identifiers — typically name and date of birth — consistent with NPSG.01.01.01. This is not a passive check; the nurse asks the patient to state their name and date of birth rather than simply reading a wristband. The nurse then confirms that the procedure on the consent form matches the planned procedure, that the operative site and laterality (left vs. right) are documented, and that consent is signed and in the chart.

Operative site marking: The surgeon marks the operative site before the patient enters the OR, while the patient is awake and able to confirm the mark. The mark is typically the surgeon’s initials placed directly on or near the site. Marking is required for procedures involving laterality (left knee vs. right knee), multiple structures (fingers, toes), or levels (spinal surgery). The patient’s verbal confirmation of the mark is part of this step — it is a redundancy check, not a formality.

Anesthesia safety check: The anesthesia provider confirms that the anesthesia machine and medications have been checked. Any known patient allergies are verbally confirmed and documented. If the patient has a known difficult airway, the team is alerted and appropriate equipment is staged.

Pulse oximeter: The team confirms that a functioning pulse oximeter is on the patient and producing a reliable waveform before induction proceeds.

Blood loss and airway risk: For procedures with anticipated blood loss greater than 500 mL, the team confirms that IV access is adequate, blood products are available, and fluid replacement is planned. Known airway difficulties are flagged at this point so the anesthesia team can prepare alternative equipment.

Phase 2: Time Out (before skin incision)

The Time Out is the highest-profile phase of the checklist — it is the one most tested on the NCLEX and most scrutinized by accreditation surveyors. It occurs immediately before the first skin incision, after the patient is draped and positioned but before the scalpel touches the patient.

Who is present: The entire surgical team stops all activity simultaneously. This includes:

• The operating surgeon
• The anesthesiologist or CRNA
• The scrub technician or scrub nurse
• The circulating nurse
• Any other providers in the room (surgical residents, radiology technicians, perfusionists)

No incision is made until every person on the team has paused and participated.

Who initiates and who leads: The circulating nurse typically initiates the time-out — she is the one who calls for the pause. However, the surgeon leads the verbal confirmation sequence. The circulating nurse does not passively observe; she is an active participant who can and should speak up if any item is unconfirmed or if a team member has not stopped working.

What is confirmed verbally:

1. Patient name and date of birth (two identifiers, aloud)
2. Planned procedure — surgeon states the full procedure name
3. Operative site and laterality — site marking is visible and matches the consent
4. Patient position on the table
5. Antibiotic prophylaxis — has it been given? Was it given within 60 minutes before incision? (Cefazolin, for example, must be infusing or complete within the 60-minute window to be effective for SSI prevention.)
6. DVT prophylaxis — sequential compression devices in place, pharmacologic prophylaxis ordered if appropriate
7. Critical or unexpected steps — the surgeon briefly describes any anticipated technical challenges, unusual anatomy, or steps that depart from the standard approach
8. Imaging — relevant imaging (X-rays, CT, MRI) is displayed and confirmed to match the patient and the operative plan
9. Implants and special equipment — confirmed available in the room
10. Instrument and sponge counts — scrub tech confirms initial counts are complete and correct

Psychological safety and the right to stop: Any team member who has a concern during the time-out — about patient identity, laterality, missing equipment, or any other safety item — has the right and the obligation to speak up and stop the procedure. This is not insubordination; it is the explicit design of the system. A surgeon who pressures the team to skip the time-out, rush through it, or ignore a concern is violating both the WHO framework and TJC Universal Protocol. The nursing student and new graduate nurse need to understand this: the time-out cannot be waived because the surgeon is running late.

Phase 3: Sign Out (before patient leaves OR)

The Sign Out occurs before the patient is transferred out of the OR to the PACU or recovery area. The patient may still be under anesthesia when this phase occurs.

Procedure name recorded: The circulating nurse confirms and documents the name of the procedure actually performed. If the surgeon extended the procedure or performed additional steps not in the original consent, this is noted and the appropriate documentation process (informed consent addendum, incident documentation) begins.

Final instrument, sponge, and needle counts: The scrub technician and circulating nurse perform the final count and confirm aloud that all counts are correct. The surgeon is informed of the count result before the wound is closed.

Specimen labeling: Any tissue, fluid, or foreign body removed during the procedure is confirmed labeled correctly — patient name, date, specimen site, laterality. Mislabeled pathology specimens are a sentinel event; the Sign Out is the last checkpoint before the specimen leaves the room.

Equipment issues: The team identifies any equipment malfunctions or sterility concerns that occurred during the case so they can be reported and corrected before the next procedure.

Recovery plan: The surgeon, anesthesiologist, and circulating nurse briefly confirm the recovery plan — destination (PACU vs. ICU), pain management orders, any immediate post-op priorities — so the handoff to the receiving team is complete and accurate. For detailed guidance on the PACU phase, see postoperative nursing care.

3-phase checklist quick reference

Surgical counts: sponges, instruments, and sharps

Surgical counts are a parallel safety system that runs alongside the WHO checklist. Their purpose is to prevent retained surgical items (RSIs) — sponges, instruments, needles, or other foreign bodies left inside the patient after closure.

Why retained surgical items happen

RSIs are consistently among the most common OR sentinel events reported to the Joint Commission. Contributing factors include emergency surgery (counts are rushed or omitted), poor communication between shifts, complex or prolonged cases, obesity (items can be hidden in tissue folds), and inadequate counting systems. The consequences range from chronic pain and infection to reoperation and death.

What is counted

Three categories of items are counted:

• Sponges: All absorbent items placed in the surgical field — laparotomy sponges (laps), 4×4 gauze, cottonoids, surgical packing. Sponges are the most commonly retained item because they are soft, difficult to visualize on X-ray without a radiopaque marker, and easy to overlook in pooled blood.
• Instruments: All metal instruments passed onto the sterile field — clamps, scissors, retractors, suction tips, electrosurgical tips. Instruments are individually counted and may include components (a clamp that disassembles into two pieces counts as two items).
• Sharps: Needles, blades, electrocautery tips, and other sharps. Sharps are counted by the specific number — a package of ten needles is counted as ten, not one.

When counts occur

Counts are performed at three distinct points during every case:

1. Initial count (before the procedure begins): The scrub technician and circulating nurse count all sponges, instruments, and sharps together, aloud, before the surgeon begins. This establishes the baseline number and confirms all items in the room are accounted for.

2. Second count (before closure of a body cavity): When the surgeon announces closure of the abdominal cavity, chest, or any other deep space, counting stops all other activity. The scrub tech and circulating nurse recount every item aloud. This is the most critical count because it is the last opportunity to identify a retained item before it is sealed inside the patient.

3. Final count (before skin closure): A final count is performed before the skin is closed. This confirms that no items were introduced or displaced between cavity closure and skin closure.

In long cases or when surgical teams change mid-case (relief scrub tech, relief circulating nurse), counts are also performed at the time of any personnel change. The incoming and outgoing team members count together to establish a shared accurate number before the outgoing staff leaves the room.

Who counts and how

The scrub technician and the circulating nurse count together. The scrub tech handles items on the sterile field; the circulating nurse records. They count aloud together, item by item, so both are tracking the same number simultaneously. Silent counting is not acceptable — both parties must verbalize each item.

All sponges used during the case are placed on a hanging sponge rack (a sterile rack mounted in the surgical field or passed off to a visible location) so they can be counted individually. Sponges are never placed in a trash bag until the final count is complete and confirmed correct.

When counts do not apply

In true life-threatening emergencies where stopping to count would harm the patient (e.g., uncontrolled hemorrhage requiring immediate cavity closure), the surgeon may order closure without a count. This is documented in the operative record as an exception, and a postoperative X-ray is obtained to screen for retained items.

Counts are also modified in some ambulatory or short-case settings where the body is not entered (surface-only procedures). Check institutional policy — the default should always be to count unless a specific exception applies.

Surgical count protocol

Count discrepancy protocol

A discrepancy occurs when the count at closure does not match the initial count. When a count is incorrect, the protocol is non-negotiable.

An X-ray is not a last resort — it is the standard response to an unresolved discrepancy. The rationale for not closing until counts are confirmed or X-ray is obtained is simple: a retained sponge or instrument causes serious harm, and the X-ray is far less harmful than reoperation.

The nurse’s role in surgical safety

The circulating nurse as safety guardian

The circulating nurse is the designated safety officer of the OR. She is the team member who initiates the time-out, manages the count record, and is responsible for ensuring the checklist is completed fully — not summarized, not skipped, not rushed through while the surgeon continues prepping. This is an advocacy role, and it requires confidence.

The circulating nurse’s documentation responsibilities include:

• Recording patient identification at Sign In
• Documenting consent and site-marking verification
• Recording the time-out in the operative record (the time, who was present, what was confirmed)
• Recording all counts and noting any discrepancies with the steps taken
• Documenting the Sign Out — procedure performed, count result, specimen labeling, recovery plan

This documentation becomes the legal record of the case. If a retained surgical item is discovered weeks later, the operative record is the first document reviewed. Gaps in count documentation create significant liability for the nurse and the institution.

Aseptic technique and infection prevention

The circulating nurse also maintains surveillance of the sterile field throughout the case. If a break in sterile technique occurs — a contaminated glove, an unsterile item introduced to the field, a violation of the sterile perimeter — the circulating nurse calls it out immediately, regardless of who caused it. This connects directly to infection control principles that govern perioperative practice.

Antibiotic prophylaxis timing is also a nursing responsibility. The nurse confirms and documents that prophylactic antibiotics were administered within 60 minutes before incision and that re-dosing has occurred for prolonged cases (typically every 3–4 hours for cefazolin, depending on institutional protocol). This step is part of the time-out but requires the circulating nurse to have tracked the infusion start time accurately.

Speaking up in the OR

Nurses new to the OR often underestimate their authority to stop a procedure. The WHO checklist explicitly empowers any team member to pause or halt if there is a safety concern. The Joint Commission’s sentinel event standards reinforce this — failure to speak up when a concern exists is a contributing factor in nearly every wrong-site surgery case reviewed.

If the surgeon attempts to begin incision before the time-out is complete, the circulating nurse states clearly: “We haven’t completed the time-out.” If a team member cannot confirm the operative site, the nurse states: “We need to pause — site confirmation is incomplete.” These are not suggestions. The escalation path for unresolved disputes is to contact the charge nurse and OR medical director.

Effective communication in the OR follows the same SBAR framework used in other settings: Situation, Background, Assessment, Recommendation. “This is the circulating nurse — the antibiotic was hung 75 minutes ago, not 60 minutes before incision. We may be outside the effective prophylaxis window. I recommend we discuss re-dosing before we proceed.” That is SBAR applied to OR safety.

For guidance on the nurse’s broader role in team coordination and delegation within nursing teams, those principles apply in the OR as well — the circulating nurse delegates appropriate tasks to the scrub tech while retaining accountability for the count record and checklist compliance.

NCLEX key points and common traps

The NCLEX management-of-care domain tests surgical safety through scenario-based questions. The questions are designed to catch students who have partial understanding — who know the checklist exists but misremember who does what and when.

The five most common traps

Trap 1: Who initiates vs. who leads the time-out Students confuse these two roles. The circulating nurse initiates the time-out — she calls for the pause and ensures everyone stops. The surgeon leads the verbal confirmation — she states the procedure, site, and critical steps. This distinction appears frequently on NCLEX.

Trap 2: When site marking occurs Site marking must occur before the patient enters the OR, while the patient is awake and able to confirm the mark. If an NCLEX question asks when site marking should be done and the options include “after anesthesia induction,” that option is wrong. The patient’s participation in confirming the mark is a required element.

Trap 3: What to do when a sponge count is wrong Do not close. Call for an X-ray. Notify the surgeon. In that order. An NCLEX question that offers “proceed with closure and order an X-ray postoperatively” is testing whether you understand that closure before X-ray is not acceptable.

Trap 4: Who must be present for the time-out The entire team must stop and participate. It is not acceptable for the surgeon to call the time-out while the scrub tech is still organizing the instrument tray. Everyone pauses simultaneously. An NCLEX option that says “the time-out may proceed if the surgeon and anesthesiologist are both present” is incorrect.

Trap 5: Can the time-out be waived for a returning patient? No. The time-out is required for every surgical procedure, regardless of whether the patient has had the same procedure before, whether it is an emergency add-on, or whether the team has operated on this patient recently. The only exception is a documented life-threatening emergency where stopping would cause immediate harm — and even then, an X-ray is obtained postoperatively.

NCLEX scenario practice

Connecting to broader perioperative care

The surgical safety checklist does not exist in isolation. It is one layer of a broader perioperative safety system that begins with preoperative assessment and extends through recovery. Understanding how these components fit together — the preoperative medication reconciliation that identifies drug interactions before anesthesia, the perioperative nursing skills that govern the full surgical continuum, and the postoperative nursing priorities that begin the moment the patient reaches the PACU — is what separates a nurse who follows a checklist from one who understands why each step exists.

The checklist’s power is not in the paper. It is in the team behavior it creates: a shared pause, a verbal confirmation, and a culture where any team member can stop a procedure without fear of reprisal. That culture of safety is what nursing students need to carry into every OR they enter.

Fire safety is another dimension of OR safety that perioperative nurses must know. The surgical environment combines oxidizers, ignition sources, and fuel in ways that create elevated fire risk. Fire safety in the OR follows the RACE protocol — see the RACE and PASS mnemonic guide for the full fire response sequence, including OR-specific application of each step.

Key takeaways

• The WHO Surgical Safety Checklist has three phases: Sign In (before anesthesia), Time Out (before incision), Sign Out (before patient leaves OR).
• The circulating nurse initiates the time-out; the surgeon leads the verbal verification. Both roles are required.
• Site marking must occur before the patient enters the OR, with the patient awake and able to confirm the mark.
• Antibiotic prophylaxis must be administered within 60 minutes of incision to be effective.
• Surgical counts occur at three points: initial, before cavity closure, and before skin closure. Any personnel change requires an additional count.
• When a count is wrong: do not close, notify the surgeon, recount, obtain intraoperative X-ray.
• Any team member can call a stop during the time-out. This is not optional — it is the design.
• Complete documentation of the checklist and all counts is a legal and regulatory requirement, not an administrative formality.