Learn How to calculate Pregnancy Gestational Diabetes - Tutorial

How to calculate Pregnancy Gestational Diabetes - Definition, Formula and Example

Definition:
Gestational diabetes happens during the pregnancy period. This diabetes is characterized by high blood glucose levels and it has a number of characteristics that are different from other forms of diabetes and it is the result of hormonal changes that occur in all women during pregnancy.

Formula:

Body Mass Index (BMI) = weight / (height * height) Ideal Body Weight (IBW) = 45.5+(((height*0.393700787)-60)*2.3) Adjusted Body Weight (ABW) = IBW + 0.4(actual weight - IBW) Basal Metabolic Rate = 655.1 + (9.6 * weight) + (1.8 * height) - (4.7 * age) Calories = BMR * factor
CategoryFactor
None1
Very little1.2
1 - 3 days per week1.375
3 - 5 days per week1.55
6 days per week1.725
Every day1.9
BMI valueWeight gain
<18.528-40 lbs
18.5-24.925-35 lbs
25.0-29.915-25 lbs
>3011-20 lbs
Example :

A 27 year lady gets pregnant. She weighs 50kgs and her height is 175cm. She does exercises for 3 days per week. Find the calories, BMI, ABW, IBW, weight gain and BMR for her.

Given,

age = 27years height = 175cm weight = 50kgs

To Find,

BMI, IBW, ABW, BMR, Weight gain, Calories

Solution
Step 1:

Calculate BMI (Body Mass Index) from the given formula, BMI = weight / (height x height) BMI = 50 / (1.75 x 1.75) BMI = 16.3

Step 2:

Calculate the IBW (Ideal Body Weight) during pregnancy period. Ideal Body Weight (IBW) = 45.5+(((height x 0.393700787) - 60) x 2.3)

IBW = 45.5+(((175 x 0.393700787)-60) x 2.3)
  = 45.5 + (68.8976 - 60) x 2.3
  = 45.5 + (8.8976 x 2.3)
  = 65.96
Step 3:

Calculate ABW (Adjusted Body Weight) (ABW) = IBW + 0.4(actual weight - IBW)

ABW = 65.96 + 0.4(50 - 65.96)
  = 65.96 + 0.4(-15.96)
  = 65.96 - 6.384
  = 59.6
Step 4:

Calculate BMR (Basal Metabolic Rate) Basal Metabolic Rate = 655.1 + (9.6 x weight) + (1.8 x height) - (4.7 x age)

BMR = 655.1 + (9.6 x 50) + (1.8 x 175) - (4.7 x 27)
  = 655.1 + 480 + 315 - 126.9
  = 1323.2
Step 5:

Finally, let us learn how to calculate the Calories level during pregnancy gestational diet. Calories = BMR x factor

Calories = 1323.2 x 1.55
  = 2051

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