INTRA Domain Overview
Intraoperative Procedures is by far the largest CST domain, accounting for approximately 45.3% of the exam (68 of 150 scored items). It covers sterile technique, instrument passing, hemostasis, specimen handling, wound closure, counts, minimally invasive and robotic surgery, and emergency situations. Because it carries nearly half the exam's weight, your INTRA preparation should receive proportionally more study time than any other domain.
What to Study First
- Sterile technique principles - the foundation for nearly every other INTRA topic. Understand the "why" behind each rule so you can reason through unfamiliar scenarios.
- Instrument identification and passing technique - both static recognition and functional application (which instrument for which task).
- Surgical counts - sequencing, discrepancy resolution, and documentation requirements are tested repeatedly.
- Hemostasis methods - mechanical, thermal, and chemical, matched to clinical scenario.
- Specimen handling chain of custody - from removal through pathology transfer.
- Minimally invasive and robotic surgery basics - insufflation physiology, trocar placement, and bedside assistant responsibilities.
Read the full INTRA study guide
Time Management for a Heavy Domain
Because INTRA questions make up nearly half the exam, expect to spend the largest share of your 240 minutes on this content. Do not rush through INTRA scenarios to "save time" for smaller domains - budget your pace proportionally to each domain's actual weight, not evenly across all 175 questions.
Question Strategy
- INTRA scenario questions often describe a situation and ask for the correct next action - practice applying principles to novel situations, not just recalling isolated facts.
- When a question describes possible contamination, the credited answer almost always favors immediate disclosure and correction over convenience or assumption.
- For instrument questions, reason from function (what is this instrument's jaw/tip designed to do) when you do not immediately recognize the name.
- Count discrepancy questions test the full resolution sequence - notify, recount, search, image if needed, document - know this order cold.
Common Traps to Avoid
- Assuming bipolar electrosurgery requires a dispersive pad - it does not; only monopolar does.
- Confusing which nerve is at risk in a given surgical position - this connects INTRA and PREOP content and is tested in both domains.
- Forgetting that a count discrepancy requires imaging consideration before final closure whenever the item cannot be located.
- Underestimating specimen handling detail - frozen sections require immediate, dry transport with no preservative.
Study Resources
- INTRA Glossary - key terms and definitions
- INTRA Common Mistakes - avoid the most frequent errors
- INTRA Exam Day Walkthrough
- Surgical Counts Cheat Sheet
- Instrument Identification Cheat Sheet
- Sterile Technique Deep Dive
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