Continence and Bed Wetting (Nocturnal Enuresis) /

Bedwetting or Nocturnal Enuresis

01 What Do I Need To Know?

What age to acheive dryness day or night?

Normal: by age 3-4 years, abnormal wetting after age 5 years

Number of times urine is passed per day

Normal: 4-7 dependent on age, abnormal 3 or less per day

Post void residual volume

Nil

1-20 ml borderline

> 20 ml on repeat testing

Bladder capacity at different ages

  • Normal: (30mls x age) +30 ml
  • Normal is between 65%- 130% of expected bladder capavcity for age
  • Nocturnal polyuria is > 130% Expected bladder capacity EBC

Age

years 

Expected BC

for age

mls

65% EBC

too small

mls

150% EBC

too large

mls 

> 130% =

Nocturnal polyuria
5 180 <117 >270

>234
6 210 <137 >315 >273
7 240 <156 >360 >312
8 270 <175 >405 >351
9 300 <195 >450 >390
10 330 <215 >505 >429
11 360 <234 >540 >468
12 390 <253 >585 >507

How much fluid should my child drink each day?

Fluid requirements depend on temperature and activities undertken

It should be either water, juice or codrdial of about 50 ml per kg per day, the rest of teh fluids are sourced from other sources such as food.

Age years mls per kg per day
4 70-80
8 60-70
12 50-60

 

02 What Others Say

  • Royal Childrens Hospital Melbourne

Bedwetting

  • Raising children network

Tips fpr parents: bedwetting

03 Clinicians Tools and Resources

  • Pediatric Urology Book: detailed accont of Nocturnal Eneuresis

Nocturnal Eneuresis

The information published here has been reviewed by Flourish Paediatrics and represents the available published literature at the time of review.
The information is not intended to take the place of medical advice.
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Last updated: 02/09/2012