Online decision rules

Arterial-Alveolar O2 gradient

Alvarado score for acute appendicitis

Canadian CT Head rule

Critical Asthma Guide from EM Updates

CENTOR score for Strep Pharyngitis

Contrast Induced Nephropathy Calculator

CURB 65 score for pneumonia

International headache classification

Na correction rate in hyponatraemia

Neuro critical care society protocols

• Intra-cerebral haemorrhage

• Ischaemic stroke

• Meningitis

• Spinal Cord Compression

• Status epilepticus

• Sub-arachnoid haemorrhage

• Traumatic Brain Injury

• Traumatic Spine Injury 

NEXUS Criteria for C-spine imaging

Ottawa ankle rules

Ottawa knee rules

Paediatric guidelines (RCH)

Paediatric drug doses (RCH)

PECARN Pediatric Head Injury/Trauma Algorithm

PERC rule for PE

Syncope Algorithm by EM Updates

TIMI score for ACS

Wells criteria for DVT

Wells criteria for PE