CST Intraoperative Procedures Review (68 Items): Counts, Field Medications, Specimens and Sharps

Intraoperative Procedures carries more scored questions than the whole Basic Science subject area, and a large share of them test rules rather than recall: when to count, what a label must say, who marks the site, how to handle a needle. Those rules are published by The Joint Commission and OSHA, so this review states each one with its source. Instrument names, suture choice and procedure steps are in the same sub-area but are better learned from NBSTSA's reference texts and your program's instrument sets.

What the 29 Intraoperative task lines cover

NBSTSA's content outline lists 29 task lines for this sub-area. Grouped by Passy for study:

Some Passy arithmetic from the outline guide: 68 items over 29 lines is about 2.3 scored questions per line, so a typical line can be tested more than once on a form.

The time-out and site marking from the scrub's side

The time-out sits under Preoperative Preparation in the outline, but every procedure starts with it, so it frames many intraoperative scenarios. The Joint Commission's 2026 National Performance Goals for hospitals set these rules:

• Timing. The time-out happens immediately before the invasive procedure starts or the incision is made.
• Who takes part. The immediate members of the procedure team, which the goal lists as the person performing the procedure, the anesthesia providers, the circulating nurse, the operating room technician and other active participants.
• What they agree on. At a minimum, correct patient identity, correct site and the procedure to be done.
• More than one procedure. When two or more procedures are done on the same patient and the person performing them changes, a time-out is done before each one.
• Site marking isn't the scrub's job. The site is marked by the licensed practitioner accountable for the procedure who will be present, with limited delegation to a supervised resident or to an advanced practice registered nurse or physician assistant. The mark must stay visible after prep and draping, and adhesive markers can't be the only method.

Surgical counts: when, what and how

The Joint Commission's Sentinel Event Alert 51 sets out what a counting procedure should do. A count should:

• Be performed audibly and visibly by two people, usually the scrub tech or scrub nurse and the circulating nurse, with the team verbally acknowledging it
• Include soft goods (including therapeutic packing), needles and sharps, instruments and small miscellaneous items, and record unretrieved device fragments
• Include items added to the field during the case
• Verify that counts printed on prepackaged sponges and instrument sets are correct
• Take place before the procedure begins (the baseline), before closure of a cavity within a cavity, before wound closure begins, at skin closure or the end of the procedure, and at the permanent relief of either the scrub person or the circulating nurse

The same alert adds two habits that show up in scenario questions: inspect instruments for breakage before and after use, so fragments aren't left behind, and let any team member call a "closing time out" before the first closing count so it isn't interrupted. The Joint Commission's Quick Safety 20 adds that reconciling the count is the whole team's responsibility, and that if one member believes the count should be repeated, the team should support it.

When a CST count is wrong

Sentinel Event Alert 51 says to handle a discrepancy under the organization's policy, so your facility's procedure governs the details. The alert's recommendations for an incorrect, or discrepant, count are specific:

1. Speak up and search. The alert expects the surgeon to verbally verify count results, and its closing procedures include methodical wound exploration, by sight and, whenever possible, by hand, in laparoscopic cases too.
2. X-ray before the patient leaves. The alert says intraoperative radiographs should be taken when the count is incorrect, covering the entire surgical field and read by a physician at the end of the procedure, before the patient is transferred out of the OR. The request should name the missing item.
3. Escalate if it's still missing. If counts remain unreconciled after the first image, the team should consider more imaging or further wound exploration.
4. Document. Record count results and the actions taken for any discrepancy.

The alert also recommends X-rays when the team judges a procedure high risk for a retained item, even with a correct count.

Scenario questions like these make up most of the subject area at launch: Perioperative Care practice is planned with 634 CST questions.

Retained items: what goes missing and when risk rises

From Sentinel Event Alert 51:

• What is left behind most often: soft goods such as sponges and towels; small miscellaneous items, including broken instrument parts, stapler components, trocar parts, guidewires and pieces of drains; needles and other sharps; and instruments, most commonly malleable retractors.
• Risk factors in the studies it cites: an emergency procedure, an unexpected change during the procedure, high body mass index, more than one procedure or surgical team, multiple staff changes during the case and long procedures. Retention was nine times as likely in emergencies and four times as likely when the procedure changed unexpectedly.
• Why counts alone aren't enough: the alert cites a 10 to 15% error rate for sponge counting and says 80% of retained sponges occurred with a count staff believed was correct.

Quick Safety 20 notes that retained foreign objects were the most frequently reported sentinel event in 2017 and 2018 and the third most common in 2021, with 97 cases. The Joint Commission says its sentinel event data are voluntary reports, not a measure of true frequency.

Labeling every medication and solution on the field

"Verify, receive, mix, and label all medications and solutions" is an Intraoperative task line, and the 2026 goals (NPG.14.03.01) set the rules for perioperative and procedural settings, on and off the sterile field. Containers include syringes, medicine cups and basins.

• Label everything not given immediately. Medications and solutions that aren't immediately administered must be labeled, even if only one medication is in use. An immediately administered medication is one prepared or obtained, taken directly to the patient and given without any break in the process.
• Label at transfer. Labeling happens whenever a medication or solution moves from its original packaging into another container, and as soon as it's prepared.
• Label contents. The medication or solution name, strength, amount (if not apparent from the container), diluent name and volume (if not apparent), and expiration date and time. The goal says the date and time aren't necessary for short procedures as the hospital defines them.
• Verify out loud and by sight. Labels are verified verbally and visually, by two people qualified to take part in the procedure, whenever the person preparing the medication isn't the person administering it.

Two related lines complete the picture: monitoring medication and solution use during the case, and, under Postoperative Procedures, reporting the amounts used. Doses and concentrations are in the CST surgical pharmacology review.

Specimens from the field

The outline asks you to verify, prepare and label specimens. The 2026 goals tie specimens to patient identification: hospitals use at least two patient identifiers, never the room number, and label containers used for blood and other specimens in the presence of the patient. In a question, a specimen container labeled later, away from the patient, or with one identifier is the wrong option.

If a rule like this doesn't stick on first reading, planned AI Rescue can restate a CST rule in simpler terms or quiz you on it.

Sharps on the field and after the case

OSHA's bloodborne pathogens standard applies to every OR:

• No bending, recapping or removing by hand. Contaminated needles and sharps can't be bent, recapped or removed unless the employer shows no alternative is feasible or a specific procedure requires it, and then only with a mechanical device or a one-handed technique. Shearing or breaking contaminated needles is prohibited.
• Discard immediately. Contaminated sharps go into containers that are closable, puncture resistant, leakproof on the sides and bottom, and labeled or color-coded. Containers stay upright, close to where sharps are used, and are replaced before they overfill.
• Reusable sharps. They can't be stored or processed in a way that requires reaching by hand into their container.
• Safer devices. Engineering controls include sharps with built-in injury protection, and employers must document each year that they considered safer devices.

A NIOSH safety and health information bulletin presents evidence that blunt-tip suture needles reduce percutaneous injuries to surgical staff, especially when suturing muscle and fascia, and stresses OSHA's requirement and NIOSH's recommendation to use them where clinically appropriate. Disposing of contaminated sharps after the case is also a Postoperative Procedures task.

Two original CST-style questions on intraoperative procedures

Written by Passy for this guide. They are not NBSTSA items and don't come from any exam or practice test.

Question 1: two unlabeled syringes

Two syringes of clear liquid sit on the back table without labels. The CST believes one is local anesthetic and the other is saline. The surgeon asks for the local. What should the CST do?

• A. Pass the syringe on the left, since the local was drawn up first
• B. Ask the circulator which syringe holds the local, then pass it
• C. Pass neither; have the local drawn up again, labeled and verified
• D. Pass the fuller syringe and tell the surgeon it is probably local

Keyed answer: C. The Joint Commission's goal requires every medication and solution that isn't immediately administered to be labeled as soon as it's prepared and verified verbally and visually. Neither syringe meets that standard, and nobody can identify an unlabeled clear liquid by memory, so A, B and D all pass a drug whose identity isn't verified. What happens to the unlabeled syringes is set by facility policy.

Question 2: a sponge short at closing

At the count before skin closure, the count is one laparotomy sponge short. What should happen first?

• A. Tell the surgeon and team at once so the search and recount begin
• B. Document the discrepancy and finish closing to limit anesthesia time
• C. Recount quietly and report only if the second count is also short
• D. Request an X-ray in recovery once the patient has left the OR

Keyed answer: A. Sentinel Event Alert 51 expects the surgeon to verbally verify count results and the wound to be explored methodically, and Quick Safety 20 makes reconciling the count the whole team's job. B closes over a possible retained sponge, C delays telling the team, and D moves the X-ray out of the OR when the alert says it should be read before the patient is transferred.

Your next step for CST Intraoperative Procedures

Write the five count points from Sentinel Event Alert 51 and the label contents from the 2026 goal on one card, and say them aloud until you can recite both without looking. Then take the time-out and count items in the CST practice test guide, and plan the rest of this sub-area with the three Intraoperative weeks in the CST study plan. To see how this sub-area fits the whole exam in prep, see how the planned 975 CST questions split across the three subject areas.