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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]
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 ...
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.
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 ...
Symptoms reported by the patient are an unreliable guide to the underlying dysfunction of the lower urinary tract. [ citation needed ] The purpose of urodynamics is to provide objective confirmation of the pathology that a patient's symptoms would suggest.
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]
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]