Work it out.
Calculators
Weight-based dose (mg/kg)
Ratio arithmetic
Drip rate for infusion
Ratio arithmetic
Parkland — fluid for burns
Parkland-formlen (Baxter 1968)
Glasgow Coma Scale (GCS)
Glasgow Coma Scale (Teasdale & Jennett 1974)
Paediatric weight from age (APLS)
APLS-formlen (Advanced Paediatric Life Support)
Endotracheal tube size and insertion depth (Cole)
Coles formel (pædiatrisk intubation)
Oxygen cylinder duration
Trykflaske-fysik (Boyles lov)
Burnt body surface area — rule of nines
9-tals-reglen (Wallace, 1951)
Shock index
Chok-indeks (Allgöwer & Burri, 1967)
Mean arterial pressure (MAP) and pulse pressure
Fysiologisk standardformel (middelarterietryk)
NEWS2 — National Early Warning Score 2
NEWS2 (Royal College of Physicians, 2017)
Revised Trauma Score (T-RTS)
Revised Trauma Score (Champion et al., 1989)
FAST test — Cincinnati Prehospital Stroke Scale
Cincinnati Prehospital Stroke Scale (Kothari et al., 1999)
Paediatric defibrillation energy (J/kg)
ERC/AHA pædiatrisk genoplivning
Estimated blood volume and haemorrhage class (ATLS)
ATLS-blødningsklassifikation (American College of Surgeons)
Tools that work in all subjects
Whatever your programme is called, these tools calculate the same — Pythagoras, area, percentages and units are not tied to one trade.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.