{"uid":"cap_dGTMmJHTyNWd4MoldTeJ4","slug":"bastion-classification-of-lower-limb-ied-injury-015e0cfa","name":"Bastion Classification of Lower-Limb IED Injury","description":"Bastion classification of lower-limb IED injury (Jacobs 2014). Caller assigns class 1-5 as the most proximal extent. Returns the class description, associated-injury flags (segmental, intraperitoneal abdomen, genital/perineal, pelvic ring, upper limb), and tourniquet_effective (true for class 1-3, false for class 4-5). Not MESS, not ISS AIS, not a treatment protocol. Paper was not designed for mortality or transfusion rates. magent does not examine the casualty.","url":"https://api.magentlab.com/api/calc/bastion","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["bastion_class","segmental","intraperitoneal_abdomen","genital_perineal","pelvic_ring","upper_limb"],"properties":{"segmental":{"type":"boolean","description":"true when there is potentially viable tissue distal to the most proximal injury (Jacobs 2014: segmental injuries recognised as a distinct entity). Required. magent does not examine the casualty."},"upper_limb":{"type":"boolean","description":"true when associated upper-limb injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."},"pelvic_ring":{"type":"boolean","description":"true when associated pelvic ring injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."},"bastion_class":{"type":"integer","description":"Bastion class 1-5 as assigned by the caller: most proximal extent of the lower-limb blast injury (1 injury confined to the foot; 2 lower leg, effective below-knee tourniquet; 3 proximal lower leg or thigh, effective above-knee tourniquet; 4 proximal thigh, tourniquet not effective; 5 any injury with buttock involvement). Jacobs 2014. magent does not examine the casualty."},"genital_perineal":{"type":"boolean","description":"true when associated genital or perineal injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."},"intraperitoneal_abdomen":{"type":"boolean","description":"true when associated intraperitoneal abdominal injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RCN5MhPnwFvlaeB0IbMSj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the Bastion class description and associated injury flags (segmental, intraperitoneal abdomen, genital/perineal, pelvic ring, upper limb) plus tourniquet effectiveness for a caller-assigned blast injury class 1–5.","exampleAgentPrompt":"The casualty has a Bastion class 3 lower-limb blast injury with associated segmental injury and pelvic ring involvement but no intraperitoneal abdomen, genital/perineal, or upper limb injuries — look up the Bastion class description and tell me whether a tourniquet will be effective.","exampleUseCases":[{"title":"Combat trauma tourniquet decision support","prompt":"We have a blast casualty with the most proximal injury in the proximal thigh — that's Bastion class 4. There's also a pelvic ring injury but no segmental, abdominal, genital/perineal, or upper limb involvement. Is a tourniquet going to be effective, and what's the full class description?"},{"title":"Injury pattern documentation for medevac handoff","prompt":"Document the Bastion classification for this IED casualty: class 2 lower-limb injury, segmental injury present, no intraperitoneal abdomen involvement, no genital/perineal injury, pelvic ring intact, no upper limb involvement — give me the class description and all associated injury flags."},{"title":"Training scenario blast injury classification lookup","prompt":"For a training scenario, the notional casualty has a Bastion class 5 blast injury with buttock involvement — segmental injury true, intraperitoneal abdomen true, genital/perineal true, pelvic ring true, upper limb false. What's the class description and tourniquet status?"}],"resultDescription":"Returns the Bastion class description (text summary of the injury level), a tourniquet_effective boolean (true for classes 1–3, false for classes 4–5), and the caller-supplied associated injury flags (segmental, intraperitoneal_abdomen, genital_perineal, pelvic_ring, upper_limb) echoed back for confirmation.","failureModes":["Missing required query parameter returns a validation error","bastion_class outside integer range 1–5 returns an invalid input error","Incorrect boolean format for injury flags causes a schema validation failure","Network or payment (x402) failure returns no data"],"whenToPreferThis":"Use this endpoint when you need a structured, coded lookup of the Jacobs 2014 Bastion classification system for lower-limb blast injuries, specifically to retrieve the class description and tourniquet effectiveness determination. Do not use for MESS scoring, ISS/AIS computation, mortality prediction, transfusion rate estimation, or any treatment protocol — this is classification lookup only and does not substitute for clinical examination.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:45:01.185Z","isFirstParty":false}