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The urethral sphincter is considered an integral part of maintaining urinary continence, and it is important to understand its role in some conditions: Stress urinary incontinence is a common problem related to the function of the urethral sphincter. Weak pelvic floor muscles, intrinsic sphincter damage, or damage to the surrounding nerves and ...
[1] [5] Some may have no symptoms. [6] Others may have trouble starting urination, urinary incontinence, or frequent urination. [1] Complications may include recurrent urinary tract infections and urinary retention. [1] [7] Cystocele and a prolapsed urethra often occur together and is called a cystourethrocele. [8]
The external urethral sphincter is a striated muscle that allows voluntary control over urination. [5] The internal sphincter, formed by the involuntary smooth muscles lining the bladder neck and urethra, receives its nerve supply by the sympathetic division of the autonomic nervous system. [6] The internal sphincter is present both in males ...
Large studies of patients have also failed to show any correlation between lower urinary tract symptoms and a specific diagnosis. [11] Also, recently a report of lower urinary tract symptoms even with malignant features in the prostate failed to be associated with prostate cancer after further laboratory investigation of the biopsy. [10]
The sphincter urethrae, or urethral sphincter, controlling the exit of urine from the body. At the anus, there are two anal sphincters which control the exit of feces from the body, the internal anal sphincter and external anal sphincter. The inner sphincter is involuntary and the outer is voluntary.
The most common symptoms of IC/BPS are suprapubic pain, [8] urinary frequency, painful sexual intercourse, [9] and waking up from sleep to urinate. [10]In general, symptoms may include painful urination described as a burning sensation in the urethra during urination, pelvic pain that is worsened with the consumption of certain foods or drinks, urinary urgency, and pressure in the bladder or ...
Women and men that have persistent incontinence despite optimal conservative therapy may be candidates for surgery. Surgery may be used to help stress or overflow incontinence. [8] Common surgical techniques for stress incontinence include slings, tension-free vaginal tape, bladder suspension, artificial urinary sphincters, among others. [8]
When the external urinary sphincter is relaxed urine is released from the urinary bladder when the pressure there is great enough to force urine to flow out of the urethra. The micturition reflex normally produces a series of contractions of the urinary bladder. The flow of urine through the urethra has an overall excitatory role in micturition ...