{"uid":"cap_cTPytTFnRegDWLnNT_ftW","slug":"save-score-calculator-schmidt-2015-56a46c31","name":"SAVE Score Calculator (Schmidt 2015)","description":"Schmidt 2015 SAVE-score from Table 4 integer cells plus constant −6. Age, weight, additive diagnoses, chronic renal failure, acute liver/CNS/renal failure, intubation hours, PIP ≤20, cardiac arrest, diastolic BP ≥40, pulse pressure ≤20, bicarbonate ≤15. Class I–V hospital survival 75/58/42/30/18%. Range −35 to 17. Not a VA-ECMO assignment. Not modified SAVE.","url":"https://api.magentlab.com/api/calc/save","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","weight_kg","myocarditis","refractory_vt_vf","post_heart_or_lung_transplant","congenital_heart_disease","liver_failure","cns_dysfunction","acute_renal_failure","chronic_renal_failure","intubation_hours","pip_cmh2o","pre_ecmo_cardiac_arrest","diastolic_bp_mm_hg","pulse_pressure_mm_hg","bicarbonate_mmol_l"],"properties":{"age":{"type":"integer","description":"Age in years (18-120). Schmidt 2015 Table 4: 18–38 → 7, 39–52 → 4, 53–62 → 3, ≥63 → 0. Adult SAVE-score; magent does not assign pediatric VA-ECMO."},"pip_cmh2o":{"type":"number","description":"Peak inspiratory pressure in cmH2O (5-80). Table 4: ≤20 → +3, otherwise 0. Worst value as assigned by the caller. magent does not read airway pressure."},"weight_kg":{"type":"number","description":"Weight in kg (20-400). Table 4 / Table 3 bands: ≤65 → 1, 66–89 → 2, ≥90 → 0. 65 kg scores 1 (≤65 before the 65–89 typeset overlap). Caller-supplied; magent does not weigh the patient."},"myocarditis":{"type":"boolean","description":"Acute myocarditis diagnosis (Table 4, +3). Diagnoses are not mutually exclusive (select one or more). true or false. Caller-assigned."},"liver_failure":{"type":"boolean","description":"Acute pre-ECMO liver failure (Table 4, −3). Paper footnote: bilirubin ≥33 µmol/L or ALT or AST >70 U/L. Acute organ failures may stack. true or false. Caller-assigned; magent does not measure labs."},"cns_dysfunction":{"type":"boolean","description":"Acute pre-ECMO CNS dysfunction (Table 4, −3): neurotrauma, stroke, encephalopathy, cerebral embolism, seizure or epileptic syndromes. May stack. true or false. Caller-assigned; magent does not examine the patient."},"intubation_hours":{"type":"number","description":"Hours of intubation before ECMO (0-720). Table 4: ≤10 → 0, 11–29 → −2, ≥30 → −4. Caller-supplied; magent does not read a ventilator log."},"refractory_vt_vf":{"type":"boolean","description":"Refractory ventricular tachycardia or fibrillation (Table 4, +2). May stack with other diagnosis flags. true or false. Caller-assigned."},"bicarbonate_mmol_l":{"type":"number","description":"Serum bicarbonate in mmol/L before ECMO (1-50). Worst value within 6 h. Table 4: ≤15 → −3, otherwise 0. magent does not measure HCO3."},"diastolic_bp_mm_hg":{"type":"number","description":"Diastolic blood pressure in mm Hg before ECMO (1-200). Worst value within 6 h of cannulation. Table 4: ≥40 → +3, otherwise 0. magent does not measure blood pressure."},"acute_renal_failure":{"type":"boolean","description":"Acute pre-ECMO renal failure (Table 4, −3): creatinine >1.5 mg/dL with or without RRT. Distinct from chronic_renal_failure. May stack. true or false. Caller-assigned."},"pulse_pressure_mm_hg":{"type":"number","description":"Pulse pressure in mm Hg before ECMO (0-200). Worst value within 6 h. Table 4: ≤20 → −2, otherwise 0. Caller-supplied; magent does not subtract systolic minus diastolic."},"chronic_renal_failure":{"type":"boolean","description":"Chronic renal failure (Table 4, −6): kidney damage or GFR <60 mL/min/1.73 m² for ≥3 months. Distinct from acute_renal_failure. true or false. Caller-assigned."},"pre_ecmo_cardiac_arrest":{"type":"boolean","description":"Cardiac arrest before ECMO (Table 4, −2). Derivation excluded eCPR during cannulation. true or false. Caller-assigned."},"congenital_heart_disease":{"type":"boolean","description":"Congenital heart disease (Table 4, −3). May stack with other diagnosis flags. true or false. Caller-assigned."},"post_heart_or_lung_transplant":{"type":"boolean","description":"Post heart or lung transplantation (Table 4, +3). May stack with other diagnosis flags. true or false. Caller-assigned."}}}},"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_6YFyGJotJ2taR99kDCGzP","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":"Computes the Survival After Veno-Arterial ECMO (SAVE) integer score from Table 4 of Schmidt 2015, returning a risk class (I–V) and associated hospital survival probability.","exampleAgentPrompt":"Calculate the Schmidt 2015 SAVE score for a 47-year-old patient weighing 78 kg with acute myocarditis, no cardiac arrest before ECMO, no acute renal or liver failure, no CNS dysfunction, no chronic renal failure, not post-transplant, no congenital heart disease, no refractory VT/VF, intubated for 6 hours, peak inspiratory pressure 18 cmH2O, diastolic BP 50 mmHg, pulse pressure 30 mmHg, and bicarbonate 18 mmol/L — what SAVE class and predicted hospital survival does that give?","exampleUseCases":[{"title":"Pre-ECMO mortality stratification in ICU","prompt":"I have a 63-year-old, 72 kg patient in cardiogenic shock — no myocarditis, no transplant history, no congenital heart disease, no refractory VT/VF, acute renal failure present, chronic renal failure absent, no liver failure, no CNS dysfunction, no pre-ECMO cardiac arrest, been intubated 12 hours, peak inspiratory pressure 25 cmH2O, diastolic BP 35 mmHg, pulse pressure 22 mmHg, bicarbonate 14 mmol/L. Run the SAVE score and tell me which class she falls into and what the survival odds are."},{"title":"Myocarditis patient ECMO candidacy scoring","prompt":"Score a 32-year-old, 60 kg patient with confirmed acute myocarditis for VA-ECMO using the SAVE score — no cardiac arrest, no organ failures, intubated 3 hours, PIP 17 cmH2O, diastolic BP 55 mmHg, pulse pressure 28 mmHg, bicarb 20 mmol/L. What SAVE class and predicted survival percentage does he get?"},{"title":"Post-cardiac arrest VA-ECMO risk assessment","prompt":"A 58-year-old weighing 95 kg had a cardiac arrest before ECMO cannulation, has acute liver failure and CNS dysfunction, chronic renal failure, no myocarditis, no transplant, no congenital disease, no refractory VT/VF, intubated 48 hours, PIP 30 cmH2O, diastolic BP 30 mmHg, pulse pressure 18 mmHg, bicarbonate 12 mmol/L — calculate his SAVE score and tell me which risk class and survival probability that corresponds to."}],"resultDescription":"Returns the integer SAVE score (range −35 to 17), the corresponding risk class (I through V), and the associated predicted hospital survival percentage (75%, 58%, 42%, 30%, or 18%) based on Schmidt 2015 Table 4.","failureModes":["Missing required query parameters (age, weight_kg, any boolean flag, or continuous variables) returns a 400 error","Out-of-range numeric inputs (e.g. age <18, weight outside 20–400 kg) may return a validation error","Non-integer age value may be rejected","Payment failure or missing x402 header returns a 402 Payment Required response","Score reflects only adult VA-ECMO patients; pediatric or VV-ECMO use is not supported by this calculator"],"whenToPreferThis":"Use this endpoint when you need the original Schmidt 2015 integer-cell SAVE score (with the −6 constant) for adult VA-ECMO candidacy or outcome prediction. Choose this over generic mortality calculators when the clinical context is specifically veno-arterial ECMO for cardiogenic shock. Do not use if you need the modified SAVE score, VV-ECMO risk, pediatric scoring, or VA-ECMO assignment logic — this endpoint only computes the arithmetic score and returns the class.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:03:37.910Z","isFirstParty":false}