{"uid":"cap_WvJPqAmi83m5Xj4QRYx6x","slug":"cha2ds2-va-stroke-risk-score-esc-2024-ad73ecd3","name":"CHA2DS2-VA Stroke Risk Score (ESC 2024)","description":"ESC 2024 CHA2DS2-VA stroke-risk score from age and discrete flags (CHF, hypertension, diabetes, prior stroke/TIA, vascular disease). No sex category (not CHA2DS2-VASc). Score 0 none, 1 consider OAC, ≥2 OAC recommended. Deterministic published arithmetic with citation; not an anticoagulation order.","url":"https://api.magentlab.com/api/calc/cha2ds2_va","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":["age","chf","hypertension","diabetes","stroke_tia","vascular_disease"],"properties":{"age":{"type":"integer","description":"Age in years (18-120). ≥75 scores 2; 65-74 scores 1."},"chf":{"type":"boolean","description":"Congestive heart failure or LV dysfunction. true or false."},"diabetes":{"type":"boolean","description":"Diabetes mellitus. true or false."},"stroke_tia":{"type":"boolean","description":"Prior stroke, TIA, or arterial thromboembolism. true or false (2 points)."},"hypertension":{"type":"boolean","description":"Hypertension history. true or false."},"vascular_disease":{"type":"boolean","description":"Prior MI, peripheral artery disease, or aortic plaque. true or false."}}}},"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_37QWHhOTkopNy8xsgJ8uQ","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":"Calculates the ESC 2024 CHA2DS2-VA stroke risk score for atrial fibrillation patients from age and five clinical flags, returning a score with OAC recommendation guidance.","exampleAgentPrompt":"Calculate the CHA2DS2-VA stroke risk score for a 72-year-old patient with hypertension and diabetes, no CHF, no prior stroke or TIA, and no vascular disease, and tell me whether oral anticoagulation is recommended per ESC 2024 guidelines.","exampleUseCases":[{"title":"AFib patient OAC decision support","prompt":"My patient is 68 years old with atrial fibrillation, has a history of hypertension and a prior MI — no CHF, no diabetes, no prior stroke or TIA. What is their CHA2DS2-VA score and should we consider starting anticoagulation?"},{"title":"Post-stroke high-risk patient triage","prompt":"Can you score a 77-year-old AFib patient who had a TIA last year and also has congestive heart failure and hypertension? No diabetes, no vascular disease. I need the CHA2DS2-VA total and the ESC guideline recommendation."},{"title":"Low-risk patient anticoagulation screening","prompt":"I have a 62-year-old AFib patient with no CHF, no hypertension, no diabetes, no prior stroke, and no vascular disease. Run the CHA2DS2-VA score and tell me if anticoagulation is needed."}],"resultDescription":"Returns the integer CHA2DS2-VA score (0–9) computed from the provided age bracket and five clinical flags, along with an interpretation: score 0 means no anticoagulation needed, score 1 means consider oral anticoagulant (OAC), and score ≥2 means OAC is recommended per ESC 2024 guidelines. The calculation is deterministic published arithmetic and does not constitute a clinical order.","failureModes":["Missing required query parameters (age, chf, hypertension, diabetes, stroke_tia, vascular_disease) returns a 400 error","Age outside 18–120 range may return a validation error","Non-boolean values for flag parameters cause schema validation failure","Payment not provided or x402 header missing causes 402 Payment Required","Network timeout or server error returns 5xx"],"whenToPreferThis":"Use this endpoint when you need the ESC 2024 version of the CHA2DS2-VA score (which excludes the sex/female category present in CHA2DS2-VASc) for atrial fibrillation stroke risk stratification. Prefer this over CHA2DS2-VASc calculators when following the updated ESC 2024 guideline that dropped sex as a risk modifier. Ideal for clinical decision support tools, EHR integrations, and automated patient triage workflows where a fast, deterministic, cited arithmetic result is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:02:46.791Z","isFirstParty":false}