The calculation is from the formula of DuBois and DuBois: BSA = (W 0.425 x H 0.725) x 0.007184. where the weight is in kilograms and the height is in centimeters. DuBois D, DuBois EF. A formula to estimate the approximate surface area if height and weight be known.

Also, What is a normal body surface area?

The “normal” body surface area is generally taken to be 1.7 m2 but, in actual fact, the body surface area depends on more than just height and weight. Other influential factors include the age and gender of the individual. For example: Average body surface area for adult men: 1.9 m2.

Hereof, What is Fred’s rule?

Fried’s rule is a method of estimating the dose of medication for a child by dividing the child’s age in months by 150 and multiplying the result by the adult dose. Pediatric dose = child’s age in months. 150. x Adult Dose.

Also to know How do you calculate ideal body weight? Ideal body weight is computed in men as 50 + (0.91 × [height in centimeters − 152.4]) and in women as 45.5 + (0.91 × [height in centimeters − 152.4]). A simple alternative would be to compute ideal body weight as the weight corresponding to an ideal body mass index of 22 kg/m2.

How do you work out body surface area in square meters?

References

1. Equation: BSA (m

2

) = 0.0235 x Height(cm)

0.42246

x Weight(kg)

0.5145

6
2. Equation: BSA (m

2

) = 0.024265 x Height(cm)

0.3964

x Weight(kg)

0.5378
3. Equation: BSA (m

2

) = SQR RT ( [Height(cm) x Weight(kg) ]/ 3600 )

## What is an example of a surface area?

Surface Area Terms Defined

For example, a sphere and a cube are three-dimensional, but a circle and a square are not. A prism is a three-dimensional shape that has non-curved sides. … The surface area of a three-dimensional shape is the sum of all of the surface areas of each of the sides.

## How do you calculate surface area with height and weight?

Body Surface Area (BSA)

1. Calculate weight in kilograms: 210 pounds ÷ 2.2 = 95.45 kg.
2. Calculate height in centimeters: 6 feet, 3 inches = 75 inches x 2.54 cm/inch = 190.5 cm.
3. Multiply height by weight and divide by 3600. (190.5 cm x 95.45 kg) ÷ 3600 = 5.
4. Take the square root of 5 = 2.24 m

2

## How do you calculate BMI with height and weight?

Calculating BMI Using the English System

1. Formula: weight (lb) / [height (in)]
2

x 703.
2. Calculation: [weight (lb) / height (in) / height (in)] x 703.

## What is Dilling formula?

An age-based formula for calculating the paediatric dose of a drug: (child’s age in years/20) x adult dose.

## What is Cowling’s rule?

(kowl′ĭng) A method for calculation of pediatric drug dosages in which the age of the child at the next birthday is divided by 24. However, the most safe and accurate methods of pediatric dosage calculation include the weight and body surface area or both of the patient.

## What are the 4 methods used in calculating pediatric doses?

Nomogram Method (Using a Child’s Body Surface Area) Friend’s Rule (Using the Child’s Age in Months) Young’s Rule (Using the Child’s Age in Years) Clark’s Rule (Child’s Weight in Pounds)

## How do you calculate BMI with height and weight?

With the metric system, the formula for BMI is weight in kilograms divided by height in meters squared. Since height is commonly measured in centimeters, an alternate calculation formula, dividing the weight in kilograms by the height in centimeters squared, and then multiplying the result by 10,000, can be used.

## What is a good weight for 5 5 female?

Ideal Weight Chart

Male Female
5′ 4″ 117 – 143 lbs. 108 – 132 lbs.
5′ 5″
122 – 150 lbs

.
113 – 138 lbs.
5′ 6″ 128 – 156 lbs. 117 – 143 lbs.
5′ 7″ 133 – 163 lbs. 122 – 149 lbs.

## How do you calculate weight by age?

Three simplified linear equations were derived to calculate mean weight for age. For Infants < 12 months: Weight (kg) = (age in months + 9)/2 For Children aged 1-5 years: Weight (kg) = 2 x (age in years + 5) For Children aged 5-14 years: Weight (kg) = 4 x age in years.

## What is a good BMI?

BMI ranges

For most adults, an ideal BMI is in the 18.5 to 24.9 range. For children and young people aged 2 to 18, the BMI calculation takes into account age and gender as well as height and weight. … between 18.5 and 24.9 – you’re in the healthy weight range. between 25 and 29.9 – you’re in the overweight range.

## How do you calculate your total body fat?

To calculate body fat percentage, add your waist and hip measurements, and then subtract the neck measurement to determine your circumference value. For example, if your waist is 30, your hips are 36, and your neck is 13, your circumference value would be 53.

## What is surface area and examples?

A three-dimensional shape is a solid shape with height or depth. For example, the sphere, cuboid, sphere, etc. The surface area of a three-dimensional shape is the sum total of all of the surface areas of each of the sides. …

## How do you explain surface area?

Surface area is a measurement of all the space that the surface of a three-dimensional shape takes up (with a three-dimensional shape being a shape with height, width, and depth). In other words, surface area is the total of all the areas of each of the sides of an object.

## What is surface area used for?

The surface area of a three-dimensional object is the total area of all of its surfaces. Surface area is important to know situations where we want to wrap something, paint something, and eventually while building things to get the best possible design.

## How do you calculate cardiac index?

Cardiac Index (CI)

To find the cardiac index, divide the cardiac output by the person’s body surface area (BSA). The normal range for CI is 2.5 to 4 L/min/m2. Here’s an example of how to calculate the cardiac index: If a patient’s cardiac output is 4.5 L/minute and his BSA is 1.25 m2, his CI would be 3.6 L/min/m2.

## What is the easiest way to calculate BMI?

To calculate your BMI, multiply your height in inches times your height in inches. Then, divide your weight by that number. Finally, multiply that result by 705. People with a BMI of 25 or above are considered at higher risk for many health issues.

## How do you calculate BMI step by step?

1. Convert your weight from pounds to kilograms. Your weight (in pounds) ÷ 2.2 = your weight (in kilograms). …
2. Convert your height from inches to meters. Your height (in inches) ÷ 39.37 = your height (in meters). …
3. Calculate your Body Mass Index.

## How do you calculate BMI with weight?

Body Mass Index (or BMI) is calculated as your weight (in kilograms) divided by the square of your height (in metres) or BMI = Kg/M2.

## How is paracetamol calculated by weight?

You prescribe paracetamol for management at home. The calculation for paracetamol dosing is 15 mg × 67 kg = 1005 mg , however, you round this down to the maximum adult dose of 1 g, which is prescribed as 20 mL of a 250 mg/5 mL formulation, every four to six hours with no more than four doses every 24 hours.

## How are pediatric drugs calculated?

Care must be taken to properly convert body weight from pounds to kilograms (1 kg= 2.2 lb) before calculating doses based on body weight.

Example 2.

Step 1. Calculate the dose in mg: 18 kg × 100 mg/kg/day = 1800 mg/day
Step 2. Divide the dose by the frequency: 1800 mg/day ÷ 1 (daily) = 1800 mg/dose

## What is the posology?

• Definition: Posology is a branch of medical science which deals. with dose or quantity of drugs which can be administered to a patient to get the desired pharmacological action.