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Urinary System Overview

Media Type

Info Sheet

Reviewed Date

Oct 28, 2025

Normal Bladder Function and Urination

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After a disabling event, it is common for bladder habits to change. Some people have problems emptying the bladder, while others may have urinary accidents. The first step in learning to deal with these changes is to learn how the urinary (bladder) system works. These are some common urinary terms:

Bladder - balloon-like muscle that holds urine

Kidneys - organs that filter blood and remove waste

Ureters - thin tubes that drain urine from the kidneys to the bladder

Urethra - tube that drains urine from the bladder to the outside of the body

Sphincter - muscle between the bladder and the urethra

There are two kidneys, one on each side toward the back just below the ribs. The kidneys remove waste from the blood and turn it into urine. Once urine is made, it moves through the ureters and then into the bladder where it is stored. To keep urine from leaking out, the bladder wall stretches like a balloon and the sphincter muscle at the bottom of the bladder tightens.

When enough pressure builds up, a message is sent from the bladder to the brain. The brain then signals the bladder to hold it a little longer; or a reflex causes the bladder walls to tighten and the sphincter muscle to relax. Then, the pressure pushes urine down through the urethra and out of the body.

Effects of Disability on the Bladder

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A disability may affect the bladder in these ways:

Incontinence - Accidental loss of urine

Urinary frequency - Needing to urinate more than once every two hours

Urinary retention - Inability to empty bladder completely; increases risk of infection.

Dysuria - Problems starting the urine stream or pain during urination.

Urinary urgency - Very sudden need to empty the bladder
 

Bladder Program

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A good way to deal with bladder problems is to develop a routine called a bladder or toileting program which includes the following:

Drinking plenty of fluids, spaced throughout the day. It is alright to drink less after dinner to avoid urinating often at night.

For some people, emptying the bladder completely is difficult and a catheter can be used to drain urine from the bladder. Intermittent catheterization is the process of passing a tube through the urethra into the bladder at certain times in order to drain the urine. Indwelling catheterization leaves the tube in place to drain urine all day.

Those using a catheter are taught how to use it by a healthcare professional. This includes care of the catheter; getting on and off the toilet seat; and managing clothes and hygiene.

People with communication difficulties are taught how to alert others of the need to use the bathroom.

Family communication is often another important part of urinary care. Although bladder changes can be very embarrassing, it is important to talk about them with family. Honest communication will make rehabilitation easier for you and your family.

Bladder Management Options

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Management

Description

Advantages

Disadvantages

Things to Consider

Timed voiding
(Most often used in stroke care)

Urinating at set intervals to avoid accidents and retrain bladder

No risk for infection

None

If bladder empties well and can hold urine for a reasonable amount of time

Urinating without control

Urine that empties without control and is managed by a collecting device or pad

Low risk of infection Requires very little time

Wearing an external collecting device May cause skin problems

Good option for men if bladder only; not for women as there is no collecting device other than a pad or diaper

Intermittent catheterization without urination

Emptying the bladder at specified intervals using a catheter

Less chance of infection, if followed as prescribed No need to wear external collecting device
Lower cost

Need to catheterize around the clock; waking at night
Intake of fluids may need to be limited to keep the bladder from overfilling

Best for those who are independent in their care
Greater commitment to follow program guidelines, such as limiting fluids, using catheter at least every six hours

Intermittent catheterization with urination

Emptying the bladder at specified intervals using a catheter; frequency depends on how well the bladder empties with urination

Less chance of infection
No need to limit fluids

May need to catheterize at night
Requires external collecting device

Not appropriate for females due to lack of effective external collecting device

Indwelling catheter

Hollow tube from bladder attaches to a bag worn on the leg or hung on the side of the bed

None

Greater chance of infection
Males may develop sores in the urethra
Could interfere with sexual intercourse (there are ways to handle this) Need to wear a leg bag or night drainage bag at all times

Optimally, used short term

 

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This content is for informational purposes only and may not be comprehensive. Information contained does not imply an endorsement from Shirley Ryan AbilityLab, and does not replace the advice of a qualified healthcare professional. See here for further details. © Shirley Ryan AbilityLab (formerly Rehabilitation Institute of Chicago). Henry B. Betts LIFE Center – (312) 238-5433 – https://www.sralab.org/lifecenter

 

 

Publication Information

Title

Urinary System Overview

Author

Shirley Ryan AbilityLab - Nursing Practice Council

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