Bladder outlet obstruction

BOO; Lower urinary tract obstruction; Prostatism; Urinary retention - BOO

Bladder outlet obstruction (BOO) is a blockage at the base of the bladder. It reduces or stops the flow of urine into the urethra. The urethra is the tube that carries urine out of the body.

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  • Bladder function - neurological control - Animation

    Bladder function - neurological control

    Animation

  • Bladder function - neurological control - Animation

    When the bladder fills with urine, sensory nerves send impulses to the brain telling it the bladder is full. The nerves connect with other nerves in the spinal cord to relay this information. In turn, the brain sends impulses back to the bladder instructing it to empty its contents.

  • Bladder catheterization - male

    Bladder catheterization - male

    Catheterization is accomplished by inserting a catheter (a hollow tube, often with and inflatable balloon tip) into the urinary bladder. This procedure is performed for urinary obstruction, following surgical procedures to the urethra, in unconscious patients (due to surgical anesthesia, coma, or other reasons), or for any other problem in which the bladder needs to be kept empty (decompressed) and urinary flow assured. The balloon holds the catheter in place for a duration of time. Catheterization in males is slightly more difficult and uncomfortable than in females because of the longer urethra.

    Bladder catheterization - male

    illustration

  • Bladder biopsy

    Bladder biopsy

    A bladder biopsy is performed if abnormalities of the bladder are found, or if a tumor is grossly visible. During the biopsy a small portion of tissue is removed and sent to the laboratory for analysis.

    Bladder biopsy

    illustration

  • Bladder catheterization - female

    Bladder catheterization - female

    A catheter (a hollow tube, often with an inflatable balloon tip) may be inserted into the urinary bladder when there is a urinary obstruction, following surgical procedures to the urethra, in unconscious patients (due to surgical anesthesia, coma, or other reasons), or for any other problem in which the bladder needs to be kept empty (decompressed) and urinary flow assured. The balloon holds the catheter in place for a duration of time.

    Bladder catheterization - female

    illustration

  • Male bladder anatomy

    Male bladder anatomy

    Urine travels from the bladder through the urethra to be excreted from the body.

    Male bladder anatomy

    illustration

  • Bladder and urethral repair  - series

    Bladder and urethral repair - series

    Presentation

  • Bladder and urethral repair  - series

    Bladder and urethral repair - series

    Presentation

  • Bladder function - neurological control - Animation

    Bladder function - neurological control

    Animation

  • Bladder function - neurological control - Animation

    When the bladder fills with urine, sensory nerves send impulses to the brain telling it the bladder is full. The nerves connect with other nerves in the spinal cord to relay this information. In turn, the brain sends impulses back to the bladder instructing it to empty its contents.

  • Bladder catheterization - male

    Bladder catheterization - male

    Catheterization is accomplished by inserting a catheter (a hollow tube, often with and inflatable balloon tip) into the urinary bladder. This procedure is performed for urinary obstruction, following surgical procedures to the urethra, in unconscious patients (due to surgical anesthesia, coma, or other reasons), or for any other problem in which the bladder needs to be kept empty (decompressed) and urinary flow assured. The balloon holds the catheter in place for a duration of time. Catheterization in males is slightly more difficult and uncomfortable than in females because of the longer urethra.

    Bladder catheterization - male

    illustration

  • Bladder biopsy

    Bladder biopsy

    A bladder biopsy is performed if abnormalities of the bladder are found, or if a tumor is grossly visible. During the biopsy a small portion of tissue is removed and sent to the laboratory for analysis.

    Bladder biopsy

    illustration

  • Bladder catheterization - female

    Bladder catheterization - female

    A catheter (a hollow tube, often with an inflatable balloon tip) may be inserted into the urinary bladder when there is a urinary obstruction, following surgical procedures to the urethra, in unconscious patients (due to surgical anesthesia, coma, or other reasons), or for any other problem in which the bladder needs to be kept empty (decompressed) and urinary flow assured. The balloon holds the catheter in place for a duration of time.

    Bladder catheterization - female

    illustration

  • Male bladder anatomy

    Male bladder anatomy

    Urine travels from the bladder through the urethra to be excreted from the body.

    Male bladder anatomy

    illustration

  • Bladder and urethral repair  - series

    Bladder and urethral repair - series

    Presentation

  • Bladder and urethral repair  - series

    Bladder and urethral repair - series

    Presentation

Review Date: 4/10/2022

Reviewed By: Kelly L. Stratton, MD, FACS, Associate Professor, Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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