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Neurogenic bladder dysfunction can involve a malfunctioning urethral sphincter. [8] Urge incontinence can happen when the urethra cannot hold the urine in as the bladder contracts uncontrollably. [9] Retrograde ejaculation can occur in men when the internal urethral sphincter fails to adequately contract during ejaculation. [3]
Urethral slings may be used in both adults and children [12] [13] [14] Artificial Urinary Sphincters have shown good term outcomes in adults and pediatric patients. [ 15 ] [ 13 ] [ 16 ] An artificial urinary sphincter has three components: a control pump, an inflatable cuff that goes around the urethra, and a pressure regulating balloon. [ 17 ]
Fowler's syndrome (urethral sphincter relaxation disorder) is a rare disorder in which the urethral sphincter fails to relax to allow urine to be passed normally in younger women with abnormal electromyographic activity detected. [1] [2] [3] [4]
The external sphincter muscle prevents urine leakage as the muscle is tonically contracted via somatic fibers that originate in Onuf's nucleus and pass through sacral spinal nerves S2-S4 then the pudendal nerve to synapse on the muscle. [7] [10] Voiding urine begins with voluntary relaxation of the external urethral sphincter.
Bladder sphincter dyssynergia (also known as detrusor sphincter dyssynergia (DSD) (the ICS standard terminology agreed 1998) [1] and neurogenic detrusor overactivity (NDO)) is a consequence of a neurological pathology such as spinal injury [2] or multiple sclerosis [3] which disrupts central nervous system regulation of the micturition (urination) reflex resulting in dyscoordination of the ...
Common symptoms of pelvic floor dysfunction in men include: Difficulty urinating, even when trying to “push” with your muscles Urinary incontinence (involuntary urinary leakage), especially ...
The internal urethral sphincter is a urethral sphincter muscle which constricts the internal urethral orifice. It is located at the junction of the urethra with the urinary bladder and is continuous with the detrusor muscle , [ 1 ] [ 2 ] but anatomically and functionally fully independent from it. [ 3 ]
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]