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haematology respiratory

Revised Geneva Score for Pulmonary Embolism

Validated pre-test probability score for pulmonary embolism in the emergency department. Uses only clinical variables (no ABG required), making it highly practical. Validated in multiple international cohorts.

Used in: Venous Thromboembolism (DVT & PE)

Score interpretation

Low Pre-Test Probability (~8% PE) 0–3

Revised Geneva 0-3 -- low probability PE; D-dimer to exclude if low clinical suspicion

→ D-dimer ELISA: if negative (< 500 ng/mL -- or age-adjusted threshold [age x 10 ng/mL if > 50 years]): PE excluded; if positive: CTPA; if YEARS algorithm used: add Wells score context (if no signs DVT, PE not most likely, no haemoptysis AND D-dimer < 1000: PE excluded without CTPA); anticoagulation NOT started until PE confirmed; if clinical suspicion very high despite low score: proceed to CTPA.

Intermediate Pre-Test Probability (~29% PE) 4–10

Revised Geneva 4-10 -- intermediate probability; CTPA or V/Q scan required

→ CTPA (CT pulmonary angiography) preferred (sensitivity > 97%): if positive, diagnose PE and anticoagulate; if negative in intermediate probability: consider V/Q scan or lower limb compression USS before excluding; D-dimer should NOT be used to exclude in intermediate probability (positive predictive value too low); initiate anticoagulation if delay to imaging > 4 hours and no contraindication (LMWH therapeutic dose); PESI score for risk stratification once confirmed; outpatient management criteria (sPESI = 0): may be suitable for home treatment with rivaroxaban or apixaban.

High Pre-Test Probability (~74% PE) 11–22

Revised Geneva >= 11 -- high probability; immediate CTPA and anticoagulation

→ Start therapeutic anticoagulation IMMEDIATELY while awaiting imaging (LMWH 1.5 mg/kg SC or UFH 5000 IU bolus); urgent CTPA; bedside echocardiography if haemodynamically unstable (assess RV function -- bedside echo faster than CTPA in arrest/near-arrest); PESI/sPESI score for severity; if massive PE (SBP < 90 or shock): thrombolysis (alteplase 100 mg over 2h) if no contraindications; catheter-directed thrombolysis or surgical embolectomy if systemic thrombolysis contraindicated; CTPA if haemodynamically stable regardless of delay; V/Q scan only if CTPA contraindicated (allergy, renal failure, pregnancy).

Interpretation bands for the Revised Geneva Score. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.