OVERVIEW
Nocturnal Enuresis is the involuntary release of urine while asleep at night after the age at which it is supposed to have stopped and bladder control occurred. It is also known as Night-time Urinary Incontinence or Night-time bedwetting, and people who bedwet are referred to as Enuretics or Bedwetters.
There are 2
types of Nocturnal Bedwetting:
- Primary Nocturnal Enuresis (PNE)
- Secondary Nocturnal Enuresis (SNE)
PRIMARY NOCTURNAL ENURESIS (PNE)
This is when
a child has not yet had a prolonged period of not bedwetting. Here, the bedwetting occurs
from infancy. It is the most common type of bedwetting among children and is
viewed as a delay in maturation of the nervous system.
According to the National Sleep Foundation, between 13-20% of 5-year-old children, 10% of 7-year-olds, and 5% of 10-year-old children still wet the bed. Even at age of 16, 1% of boys and girls bedwets about once or twice in 3months
According to the National Sleep Foundation, between 13-20% of 5-year-old children, 10% of 7-year-olds, and 5% of 10-year-old children still wet the bed. Even at age of 16, 1% of boys and girls bedwets about once or twice in 3months
CAUSES
Notable causes of PNE include:
1. Genetics: PNE is strongly linked to
genetic make-up. Children whose parents were not bedwetters have only a 15%
chance of bedwetting. But when one or both parents were bedwetters, the chances
jump to 44% and 77% respectively
2. Inability to recognize the sensation
of a full bladder during sleep: This is usually due to an immature nervous system
3. Inability to hold urine for the
entire night: This may be due to a small bladder. Also, studies have shown that
bedwetters have an increased bladder tone (unintentional contraction of the
muscles of the bladder) which functionally decreases bladder capacity
4. Production of a large amount of urine
during sleep: This is usually due to insufficient production of the *Anti-diuretic
Hormone (ADH)*. During sleep, the body increases the level of ADH to signal the
kidney to produce less urine. When this doesn’t happen, bedwetting may result
*ADH (Vasopressin): This is a hormone that helps the body retain water. It is released when the body is dehydrated or in low activity causing the kidney to conserve water.*
5. Poor/Unhealthy daytime toilet habits:
Many children habitually ignore the urge to urinate and put off urinating as long
as they possibly can. Parents are familiar with the “potty dance” characterized
by leg crossing, face straining, squatting and groin holding that children use
to hold back urine
SECONDARY NOCTURNAL ENURESIS:
This is when
a child or adult bedwets again after being dry for a period of at least
6months. It is mostly a sign of an underlying medical or emotional problem.
CAUSES
Notable causes of SNE include:
- Urinary tract infection: A urinary tract infection can make it difficult to control urination. Signs and symptoms may include daytime bedwetting, frequent urination, bloody urine and pain during urination.
- Diabetes: People with type I diabetes have a high level of sugar (glucose) in the their blood. Consequently, the body increases urine output. Frequent urination is a common symptom of diabetes.
- Structural or anatomical abnormality/Neurological problems: An abnormality in the organs, muscles, or nerves involved in urination can cause incontinence or other urinary problems that could show up as bedwetting.
- Emotional problems/Stress: This may include parent conflict or divorce, arrival of a new baby, moving to a new town, sleeping away from home, starting a new school, or loss of a loved one or pet. Children who are being physically or sexually abused sometimes begin bedwetting.
- Chronic constipation : When the bowels are not regularly and adequately emptied, it puts pressure on the bladder
- Sleep apnea: Sometimes, bed-wetting could be a sign of Obstructive Sleep Apnea (OSA), a condition in which breathing is interrupted during sleep
- Excessive fluid intake.
TREATMENT AND MANAGEMENT
NOTE:
Most of the measures discussed here is best for tackling PNE. SNE is
best approached by treating the underlying medical condition
Most times,
children outgrow bedwetting on their own. If there is a family history of
bedwetting, the child will probably stop bedwetting around the same time the
parent(s) stopped bedwetting. So, a wait-and-see approach is usually
recommended until the child is at least 6 or 7years old
However,
treatment is recommended when the child is especially bothered or embarrassed
by the condition.
Treatment and management procedures include:
- Using bedwetting alarms: These are small
battery-operated devices connected to a moisture sensitive pad on the child’s
night wear. When the pad senses wetness, the alarm goes off! Ideally,
bedwetting alarms sounds just as the child begins to urinate – in time to help
the child wake, stop the urine flow, and get to the toilet to expel it. But if
the child sleeps deeply, another person may need to listen for the alarm.
Bedwetting alarms are highly effective, carry a low risk of relapse or side effects and may provide a better long-term solution
- Using absorbent underwears/underpants: These help reduce embarrassment for bedwetters and make cleanup easier. They are known as “training pants” or “diapers” when used for younger children and as “absorbent underwear” or “incontinence briefs” when marketed for older children and adults. They are ideal for bedwetters wishing to spend night-outs or go camping
- Using waterproof mattress pads: This also ease the cleanup of bedwetting episodes. But, they only protect the mattress while the sheets, clothes and even a sleeping partner may be soiled
- Others:
- Reassuring the child that bedwetting is a normal part of development and that he/she will eventually outgrow it
- Limiting the amount of fluids the child drinks right before bed
- Making sure the child urinates before going to bed
- Avoiding caffeine, which can act as a diuretic (a substance that promotes the production of urine), especially in the evening
- Waking the child to urinate during the night, before the time that he/she would usually wet the bed
- Medications: As a last resort (because
of their accompanying side effects), medications may be prescribed by a doctor
to treat bedwetting.
These medications and their aims include:- Slowing night-time urine production: Drugs such as Desmopressin acetate (DDAVP) – the synthetic replacement for ADH – causes the body to make less urine at night. It can cause seizures especially when the child has a headache, has vomited or feel nauseous, or drinks a lot of water with it.
- Calming the bladder: Antichorlinergic drugs like Oxybutynin or Hyoscyamine helps reduce bladder contractions, consequently increasing its capacity. Side effects may include dry mouth facial flushing
- Changing the sleeping and waking patterns of a child: Anti-drepressant drugs such as imipramine or amitrityline treat bedwetting by changing a child’s sleeping and waking pattern. Side effects include mood changes and sleep problems
