Body mass index & patient weight


APLS wt estimation children<14yo:

Weight (kg) = (age + 4) x2


Resusc. room weight estimation:

Useful up to 150Kg (inaccurate above that)

Weight (kg) = ( 3 x Mid Arm Circumference (cm) ) - 12

BMI calculator


Basal metabolic Rate:

Males:

BMR = 66 + (13.75 x weight in kg) + (5 x height in cm) – (6.8 x age in yrs)

Females:

BMR = 655 + (9.6 x weight in kg) + (1.8 x height in cm) – (4.7 x age in Yrs)

Total Daily Energy Expenditure

Total Daily Energy Expenditure (TDEE)
Amount of exercise Total Daily energy expenditure
Sedentary individual, little or no exercise, office work TDEE = BMR x 1.2
Light activity, exercise or sport 1-3 days per week TDEE = BMR x 1.375
Moderate activity, exercise or sport 3-5 days per week TDEE = BMR x 1.55
High activity, exercise or sport 6-7 days per week TDEE = BMR x 1.725
Very heavy activity, physical job, sport 2 x times / day TDEE = BMR x 1.9

Content by Dr Íomhar O' Sullivan. Reviewed by Dr ÍOS 4/06/21.