Clinical calculators and scores

The scores you reach for on the take and on call, each showing every criterion, the running total and the published bands, with the primary reference cited.

Respiratory

CURB-65Severity of community-acquired pneumonia STOP-BANGScreening for obstructive sleep apnoea

Cardiology

CHA₂DS₂-VAScStroke risk in atrial fibrillation ORBITBleeding risk on anticoagulation in AF (NICE-preferred) HAS-BLEDBleeding risk on anticoagulation in AF GRACE (ACS)Mortality risk in ACS (validated non-linear model) — opens the external calculator

Infection

Duke criteria (endocarditis)Modified Duke criteria for infective endocarditis qSOFABedside flag for poor outcome in suspected infection

Haematology

Wells score (DVT)Pre-test probability of DVT (two-level) Wells score (PE)Pre-test probability of PE (two-level) PERC rule (PE rule-out)The published PE rule-out criteria — applicable only at LOW pre-test probability PESI (PE severity)30-day mortality risk class (I–V) in confirmed PE

Gastroenterology

Glasgow-BlatchfordRisk of needing intervention in upper GI bleeding Oakland (lower GI bleed)Risk in acute lower GI bleeding Rockall (pre-endoscopy)Pre-endoscopy risk in upper GI bleeding AIMS65In-hospital mortality risk in upper GI bleeding Truelove & WittsSeverity classification of ulcerative colitis Child-PughSeverity of cirrhosis (class A / B / C) West Haven criteriaGrading of hepatic encephalopathy (grade 0–IV) MELD-Na90-day mortality in end-stage liver disease (UNOS/OPTN) — opens the external calculator King's College criteriaPoor-prognosis criteria in acute liver failure FIB-4Liver fibrosis risk from age, AST, ALT and platelets — opens the external calculator Glasgow-Imrie (pancreatitis)Severity of acute pancreatitis — the modified Glasgow / “PANCREAS” score

Neurology

Glasgow Coma ScaleConscious level — eyes, verbal, motor (3–15) NIHSSStroke severity (0–42)

Delirium & cognition

4ATRapid delirium screen AMT-10 (AMTS)Abbreviated Mental Test — 1 point per correct answer AMT-4Ultra-short cognitive screen — age, DOB, place, year

Renal

Creatinine clearance (Cockcroft-Gault)Estimated creatinine clearance — opens the external calculator Anion gapSerum anion gap (± albumin correction) — narrows a metabolic acidosis Osmolar gapMeasured − calculated osmolality — screens for toxic alcohols

General

BMIBody mass index

Alcohol

CIWA-ArAlcohol withdrawal severity (0–67) — anchors abbreviated; score against the full form wording if unsure

Allergy

PEN-FASTRisk-stratify a reported penicillin allergy

The whole handbook, in your pocket

Emergency checklists, ward cover and on-call scenarios, and clerking plans for the medical take — an app for resident doctors, working offline on the ward.

Start your free trial