
PreOp: Perioperative Medicine
Preoperative Risk & Planning
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About
Prepare for surgery with a structured clinical reference at your side. PreOp brings preoperative assessment, risk calculators, perioperative medication references and handoff tools into one app for anesthesiologists, surgeons, internists, hospitalists and residents.
ASSESS AND ORGANIZE
Review cardiac, airway, metabolic and medication considerations in a readiness dashboard. Organize issues to discuss with your team, explore optimization pathways and review investigation suggestions with supporting rationale. Readiness flags support assessment; they are not clearance for surgery.
EXPLORE CLINICAL CALCULATORS
Access tools including RCRI, STOP-BANG, Caprini VTE, ARISCAT and Apfel, alongside BMI, eGFR and anion gap. Review the context and limitations of each result rather than relying on a score alone.
REVIEW MEDICATIONS AND NEURAXIAL TIMING
Find perioperative medication references covering anticoagulants, antiplatelets, diabetes treatments and other drug groups. Review neuraxial timing considerations with cited guidance, including ASRA 2025. Suggested intervals do not guarantee safety: confirm dose, renal function, patient factors and local protocols.
PLAN POSTOPERATIVE CARE
Build a structured plan covering medication restart considerations, VTE prevention, monitoring, glucose management, OSA, delirium and pain or nausea management. Review and adapt every output before clinical use.
COMMUNICATE WITH YOUR TEAM
Prepare I-PASS and SBAR handoff drafts, problem lists and summaries. Organize a morning board with pending actions, and work through a perioperative safety checklist.
REFERENCE AND LEARN
Explore source-linked clinical content and learning material. Clinical reference content is available offline, with light and dark themes for supported screens. Internet is required for purchases, restoration and access-code activation.
FREE AND PREMIUM ACCESS
Start with the basic assessment, learning content and free calculators including BMI, eGFR and anion gap. Premium unlocks the full set of tools. A valid Oman annual access code provides full access for its named calendar year, ending at midnight on January 1 of the following year in Oman time.
IMPORTANT CLINICAL INFORMATION
PreOp is a reference and decision-support aid for qualified healthcare professionals. It does not replace clinical judgment, specialist consultation, institutional protocols or independent verification. Calculator results and generated plans must be checked against the individual patient's circumstances. Do not use PreOp as the sole basis for diagnosis, prescribing or procedural decisions.
PreOp Premium: US$2.49/month or US$29/year in the US, effective October 4, 2026. Localized prices vary; the checkout price applies. Payment is charged to your Apple ID account at confirmation. Subscriptions automatically renew unless cancelled at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the period ends. Manage or cancel in your App Store account settings.
Terms of Use (EULA): https://www.bayan.edu.om/preop/terms
Privacy: https://www.bayan.edu.om/preop/privacy
Support: https://www.bayan.edu.om/preop/support
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What's New in PreOp
1.3.7
October 22, 2026
Refreshed PreOp design with clearer navigation, improved typography, the official PreOp logo, and better layouts on smaller screens. Calculator search now supports translated descriptions and categories.
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Subscriptions & In-App Purchases
Monthly
Full access to all 18 tools
$2.491 Month





