Urethral Resistance Pressure

	Urethral Resistance Pressure Urethral resistance pressure is the pressure existing in urethra during urination or other conditions generated by the detrusor muscle. It forces urine into and through the urethra in order for micturition. In the urethra, part of that pressure is converted to dynamic (forward) pressure which helps voiding happen. On the other hand, static (lateral) pressure helps preventing involuntary dribbling. Decline in urethral resistance pressure is one of the contributing factors is some forms of incontinence for example stress incontinence as a result of atrophy Atrophy is the partial or complete wasting away of a part of the body. Causes of atrophy include mutations (which can destroy the gene to build up the organ), poor nourishment, poor circulation, loss of hormonal support, loss of nerve supply t ... in menopause. Decline in urethral resistance pressure is commonly associated with decline in bladder outlet. Urethral retro-resistance pressure (URP) is a new clinical measure of u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Urethra The urethra (from Greek οὐρήθρα – ''ourḗthrā'') is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males. In human females and other primates, the urethra connects to the urinary meatus above the vagina, whereas in marsupials, the female's urethra empties into the urogenital sinus. Females use their urethra only for urinating, but males use their urethra for both urination and ejaculation. The external urethral sphincter is a striated muscle that allows voluntary control over urination. 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. The internal sphincter is present both in males and females. Structure The urethra is a fibrous and muscular tube which connects the urinary bladder to the external urethral meatus. Its length differs between the sexes, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Detrusor Muscle The detrusor muscle, also detrusor urinae muscle, muscularis propria of the urinary bladder and (less precise) muscularis propria, is smooth muscle found in the wall of the bladder. The detrusor muscle remains relaxed to allow the bladder to store urine, and contracts during urination to release urine. Related are the urethral sphincter muscles which envelop the urethra to control the flow of urine when they contract. Structure The fibers of the detrusor muscle arise from the posterior surface of the body of the pubis in both sexes (musculi pubovesicales), and in the male from the adjacent part of the prostate. These fibers pass, in a more or less longitudinal manner, up the inferior surface of the bladder, over its apex, and then descend along its fundus to become attached to the prostate in the male, and to the front of the vagina in the female. At the sides of the bladder the fibers are arranged obliquely and intersect one another. The 3 layers of muscles are arranged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Micturition Urination, also known as micturition, is the release of urine from the urinary bladder through the urethra to the outside of the body. It is the urinary system's form of excretion. It is also known medically as micturition, voiding, uresis, or, rarely, emiction, and known colloquially by various names including peeing, weeing, and pissing. In healthy humans (and many other animals), the process of urination is under voluntary control. In infants, some elderly individuals, and those with neurological injury, urination may occur as a reflex. It is normal for adult humans to urinate up to seven times during the day. In some animals, in addition to expelling waste material, urination can mark territory or express submissiveness. Physiologically, urination involves coordination between the central, autonomic, and somatic nervous systems. Brain centres that regulate urination include the pontine micturition center, periaqueductal gray, and the cerebral cortex. In placental mam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Stress Incontinence Stress incontinence, also known as stress urinary incontinence (SUI) or effort incontinence is a form of urinary incontinence. It is due to inadequate closure of the bladder outlet by the urethral sphincter. Pathophysiology It is the loss of small amounts of urine associated with coughing, laughing, sneezing, exercising or other movements that increase intra-abdominal pressure and thus increasing the pressure on the bladder. The urethra is normally supported by fascia and muscles of the pelvic floor. If this support is insufficient due to any reason, the urethra would not close properly at times of increased abdominal pressure, allowing urine to pass involuntarily. Most lab results such as urine analysis, cystometry and post-void residual volume are normal. Some sources distinguish between urethral hypermobility and intrinsic sphincter deficiency. The latter is more rare, and requires different surgical approaches. Men Stress incontinence in men is most commonly seen after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Atrophy Atrophy is the partial or complete wasting away of a part of the body. Causes of atrophy include mutations (which can destroy the gene to build up the organ), poor nourishment, poor circulation, loss of hormonal support, loss of nerve supply to the target organ, excessive amount of apoptosis of cells, and disuse or lack of exercise or disease intrinsic to the tissue itself. In medical practice, hormonal and nerve inputs that maintain an organ or body part are said to have ''trophic'' effects. A diminished muscular trophic condition is designated as ''atrophy''. Atrophy is reduction in size of cell, organ or tissue, after attaining its normal mature growth. In contrast, hypoplasia is the reduction in the cellular numbers of an organ, or tissue that has not attained normal maturity. Atrophy is the general physiological process of reabsorption and breakdown of tissues, involving apoptosis. When it occurs as a result of disease or loss of trophic support because of other diseases ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Bladder Outlet Decline Decline in bladder outlet is the process of gradual atrophy in the distal structures to the bladder in the urinary system. It happens along with atrophy of the reproductive system in females. It is one of the contributing factors for disorders like stress incontinence. It is commonly associated with decline in urethral resistance pressure Urethral resistance pressure is the pressure existing in urethra during urination or other conditions generated by the detrusor muscle. It forces urine into and through the urethra in order for micturition. In the urethra, part of that pressure is .... References {{reflist Urinary bladder Urinary bladder disorders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Urodynamic Testing Urodynamic testing or urodynamics is a study that assesses how the bladder and urethra are performing their job of storing and releasing urine. Urodynamic tests can help explain symptoms such as: * incontinence * frequent urination * sudden, strong urges to urinate but nothing comes out * problems starting a urine stream * painful urination * problems emptying the bladder completely ( Vesical tenesmus, detrusor failure) * recurrent urinary tract infections Urodynamic tests are usually performed in Urology, Gynecology, OB/GYN, Internal medicine, and Primary care offices. Urodynamics will provide the physician with the information necessary to diagnose the cause and nature of a patient's incontinence, thus giving the best treatment options available. Urodynamics is typically conducted by urologists or urogynecologists. Purpose of testing The tests are most often arranged for men with enlarged prostate glands, and for women with incontinence that has either failed conservative tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]