Hi, this is Tom, and in this episode I'm going to be going through short stature,

and you can find notes at zero to finals.com and in the zero to finals pediatrics book,

and you can find flashcards and questions at members.0.0.0.5.com. So let's jump straight in.

Short stature is defined as a height of more than two standard deviations below the average for a child's age and sex,

which is equivalent to being below the second centile on a growth chart.

Let's talk about calculating the predicted height. A child's predicted height can be estimated

based on their parents' height. This is calculated in centimeters. To calculate a boy's predicted height, you take the mother's height. This is calculated in centimeters. To calculate a boy's predicted height, you take the

mother's height plus the father's height plus 13 centimeters and divide all of that by two. And to get a

girl's predicted height, you take the mother's height plus the father's height

minus 13 centimetres and you divide all of that by two.

The key thing here to remember is that you add 13 centimetres before divided by two for a boy's

height and you subtract 13 centimetres before divided by 2 for a boy's height, and you subtract 13 centimetres before

divided by 2 for a girl's height.

Let's talk about the causes of short stature.

The key causes are familial short stature, meaning that everybody in the family tends to be on the shorter side.

Constitutional delay in growth and puberty, which we'll talk about in more detail shortly.

Malnutrition. Chronic diseases, for example, celiac disease, inflammatory bowel disease or congenital heart disease,

endocrine disorders, for example hypothyroidism or growth hormone deficiency,

genetic conditions, for example Down syndrome or Turner syndrome,

and skeletal dysplasias, for example, acondroplasia.

Let's talk about constitutional delay in growth and puberty.

Constitutional delay in growth and puberty, or CDGP, is considered a variation on normal development.

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