🔴 FOR REGISTERED PHYSICIANS ONLY These tools are for clinical decision support only. Final responsibility for all clinical decisions lies with the treating physician. Software may contain errors — always apply independent clinical judgement.
Built by a clinician  ·  For clinicians

Tools for the
resuscitation bay

Evidence-based clinical decision support for emergency physicians and intensivists. Fast, free, and designed to reduce cognitive load when it matters most.

Explore tools About the project
7.40
pH
5.3
PaCO₂ kPa
24
HCO₃⁻
12.1
PaO₂ kPa
0.8
Lactate
scroll
Clinical tools

Every tool you need
in the resus bay

Built around real clinical workflows. No login, no friction — open and use in seconds.

● LIVE
BloodGas Pro
Comprehensive arterial, venous and capillary blood gas interpretation. Step-by-step analysis with teaching notes, acute vs chronic compensation, ARDS grading, ventilator calculations, O₂ delivery, Stewart approach, and serial trend tracking. Photo import with AI extraction. UK & US units.
ABG · VBG · CBGUK/US unitsPhoto OCRARDS BerlinWinter's formulaStewart/SIDVentilator targetsO₂ deliverySerial trendsPeds mode
● LIVE
EM Red Flags
25 emergency complaint categories, 209 red flags. Searchable by specialty with disposition guidance. NHS · NICE · RCEM · BTS · RCP guidelines.
25 complaints209 red flagsSpecialty filtersDisposition tagsNICE · RCEM
● LIVE
PE Algorithm
Pulmonary embolism clinical decision pathway. Wells score, PERC rule, YEARS algorithm, and imaging guidance integrated into one workflow.
Wells scorePERC ruleYEARSCTPA guidance
● LIVE
Paediatric Drug Calculator
Weight-based emergency drug dosing for children. APLS weight estimation, WETFLAG reference, age-appropriate physiological normals, and 40+ drugs across cardiac arrest, seizures, sedation, bronchodilators, intubation, fluids, and inotropes.
APLS weightWETFLAG40+ drugsET tube sizingRCUK
● LIVE
RSI Planner
Rapid sequence intubation checklist, drug calculator, difficult airway scoring, and post-intubation ventilator settings.
Drug dosesAirway scoringVent settings
● LIVE
Sepsis Toolkit
UK Sepsis Trust 2024/2025 red & amber flag screening for adult, paediatric, and pregnant patients. Sepsis 6 timed checklist, fluid calculator, and antibiotic guidance per NICE NG253/254/255.
NICE NG253–255Sepsis 6Adult · Child · PregnantUK Sepsis Trust 2025
● LIVE
Clinical Scores
28 UK scoring tools across 9 presenting complaints. HEART, Wells PE/DVT, CURB-65, GCS, FOUR, NEWS2, qSOFA, SOFA, ROSIER, NIHSS, DECAF, Alvarado, eGFR (3 methods), QTc, AKI staging, CHA₂DS₂-VASc and more. All UK units.
28 scoresUK unitsNICE · RCEM · BTSMulti-methodeGFR · QTc · NEWS2
● LIVE
DVLA Restrictions
DVLA medical standards for Group 1 and Group 2 licences. Conditions, notification requirements, and fitness-to-drive guidance across cardiology, neurology, diabetes, psychiatry and more.
Group 1 & 2CardiologyNeurologyDiabetesDVLA standards
● LIVE
IV Fluids & Electrolytes
Sodium correction rates, DKA fluid protocol, hyperkalaemia management, and IV fluid choice guide with haemodynamic context.
Na correctionDKA protocolHyperkalaemiaFluid choice
● LIVE
ED Safety Netting
Structured safety-netting advice for common ED presentations. Return precautions, red flag symptoms to watch for, and clear discharge instructions aligned with RCEM guidance.
Return precautionsRed flagsDischarge adviceRCEM
● LIVE
Burns Assessment
Interactive Lund & Browder body diagram for accurate TBSA% estimation. Age-adjusted for adult, child, and infant. Parkland formula fluid resuscitation with hourly rates and urine output targets.
Lund & BrowderTBSA%Parkland formulaAdult · Child · Infant
● LIVE
Antibiotic Guide
Organism-to-antibiotic and antibiotic-to-spectrum lookup. First-line and alternative agents, susceptibility data (EUCAST), clinical notes on resistance patterns, BNF dose links, molecular structures, and microscopic organism images. Covers 25+ pathogens and 35+ antibiotics including antifungals and antivirals.
25+ organisms35+ antibioticsBNF / EUCASTUKHSA guidanceAntifungals · Antivirals
● LIVE
Life Support Algorithms
Current RCUK 2025 resuscitation guidelines for adult, paediatric and newborn patients. 21 algorithms and reference documents — ALS, BLS, PALS, NLS, arrhythmias, traumatic cardiac arrest, post-resuscitation care and neuroprognostication.
Adult · Paeds · NewbornALS · BLS · PALS · NLSRCUK 202521 documents
Other clinical references

Broader clinical tools

Useful references beyond the resus bay — paediatric development, driving standards, and other evidence-based clinical decision aids.

● LIVE
Paediatric Development
NICE-aligned developmental milestones and red flags by age band (0–5+ years). Gross motor, fine motor, speech and social domains with NICE NG127/NG62/CG128 referral thresholds. Sex-specific walking milestones.
0–5+ years4 domainsNICE NG127Red flagsReferral thresholds
About

Built in the
gaps between shifts

01

Clinician-built

Every tool is designed by an emergency physician who uses these calculators daily. The workflows mirror real clinical thinking — not textbook algorithms.

02

Cognitive load reduction

The ED and ICU are high-noise, high-stakes environments. These tools offload the mental arithmetic so your attention stays with the patient.

03

Evidence-based, always

Winter's formula, ARDSNet targets, Berlin criteria, NICE guidelines — every calculation references established clinical literature.

04

Free, forever

No paywalls, no accounts, no subscriptions. Clinical decision support should be accessible to every clinician, everywhere, at any grade. Display ads help keep it free.

LIVE INTERPRETATION · BLOODGAS PRO
pH7.24Acidaemia
PaCO₂6.8 kPaHigh
HCO₃⁻20 mmol/LNormal
Lactate3.4 mmol/LElevated
⚠ Primary: Respiratory acidosis
Acute — renal HCO₃⁻ retention. COPD exacerbation likely. Consider NIV.
bloodgas.resusdoc.uk
Security & Privacy

Your clinical data.
Never stored. Never shared.

Clinical data is sensitive. Everything you enter into these tools stays in your browser — no servers, no databases, no data retention.

HTTPS everywhere
HSTS enforced with one-year max-age and preload. All HTTP permanently redirected to HTTPS. TLS 1.3 via Netlify CDN.
Zero clinical data storage
No patient data is ever stored or transmitted. All calculations run entirely in your browser — nothing leaves your device.
Secure headers
Full suite: CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy.
No clinical data profiling
No patient data is used for targeting. Display ads help keep these tools free — your clinical inputs are never shared.
Clinical disclaimer
Decision support tools — not a replacement for clinical judgement. Always correlate with the clinical picture.
Always available
Netlify global CDN, 99.99% uptime SLA. Static files — no server to go down.
Dr Nirmalya Hore
About the author
Dr Nirmalya Hore
MBBSFCCMPGDip DiabetologyMRCEMFRCEM

Passionate about Emergency Medicine, learning new skills every day. ResusDoc is built in the gaps between shifts — clinical tools designed by a clinician, for clinicians.