Skip to content home | contact us | directions | jobs & volunteering | make a gift | about us | español | site map services a to z request an appointment find a doctor community physician directory referral center patient admitting and clinic registration financial and insurance information medical records patient services send a greeting card tours visiting information lodging and food who’s who community resources government relations and advocacy secure e-mail packard kids connection physicians nurses other health professionals health conditions family resource center/library research and clinical trials stanford health library view all events and classes associated programs & services global impact: training for robotic surgeries in india urology doctors urologists related health information genitourinary and kidney disorders   print this page email this page posterior urethral valves (puv)   what are posterior urethral valves? viagra naturala pentru femei Posterior urethral valves (or puv) are an abnormality of the urethra, which is the tube that drains urine from the bladder to the outside of the body for elimination. The abnormality occurs when the urethral valves, which are small leaflets of tissue, have a narrow, slit-like opening that partially impedes urine outflow. Reverse flow occurs and can affect all of the urinary tract organs including the urethra, bladder, ureters, and kidneys. The organs of the urinary tract become engorged with urine and swell, causing tissue and cell damage. The degree of urinary outflow obstruction will determine the severity of the urinary tract problems. viagra for daily use coupon What causes posterior urethral valves? cheap generic viagra Puv are the most common cause of severe types of urinary tract obstruction in children. viagra for sale It is thought to develop in the early stages of fetal development. The abnormality affects only male infants and occurs in about one in 8,000 births. This disorder is usually sporadic (occurs by chance). order viagra online However, some cases have been seen in twins and siblings, suggesting a genetic component. What are the symptoms of posterior urethral valves? The syndrome may occur in varying degrees from mild to severe. The following are the most common symptoms of posterior urethral valves. viagra in bph However, each child may experience symptoms differently. viagra interaction with grapefruit Symptoms may include: an enlarged bladder that may be detectable through the abdomen as a large mass urinary tract infection, or uti (usually uncommon in children younger than 5 years and unlikely in boys at any age, unless an obstruction is present) painful urination weak urine stream urinary frequency bedwetting or wetting pants after the child has been toilet-trained poor weight gain difficulty with urination the symptoms of puv may resemble other conditions or medical problems. cut viagra 20mg in half Always consult your child's physician for a diagnosis. order viagra How are posterior urethral valves diagnosed? viagra canada The severity of the obstruction often determines how a diagnosis is made. viagra in bph Often, puv are diagnosed by fetal ultrasound while a woman is still pregnant. buy viagra cheap
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