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The bladder (from Old English blædre 'bladder, blister, pimple') is a hollow organ in humans and other vertebrates that stores urine from the kidneys. In placental mammals , urine enters the bladder via the ureters and exits via the urethra during urination .
Cystometry, also known as flow cystometry, is a clinical diagnostic procedure used to evaluate bladder function. Specifically, it measures contractile force of the bladder when voiding . The resulting chart generated from cystometric analysis is known as a cystometrogram (CMG), which plots intravesical pressure against the volume of fluid in ...
Self catheterization requires doing the procedure periodically during the day, the frequency depending on fluid intake and bladder capacity. If fluid intake/outflow is around 1.5 litres per day, this would typically be performed roughly three times per day, i.e. roughly every six to eight hours during the day, more frequently when fluid intake ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 November 2024. This article is about the human urinary system. For urinary systems of other vertebrates, see Urinary systems of birds, urinary systems of reptiles, and urinary systems of amphibians. Anatomical system consisting of the kidneys, ureters, urinary bladder, and the urethra Urinary system 1 ...
A sterile liquid (water, saline, or glycine solution) will flow through the cystoscope to slowly fill the bladder and stretch it so that the physician has a better view of the bladder wall. As the bladder reaches capacity, patients typically feel some mild discomfort and the urge to urinate. [citation needed]
Urine flow rate or urinary flow rate is the volumetric flow rate of urine during urination.It is a measure of the quantity of urine excreted in a specified period of time (per second or per minute).
A plot of bladder (intravesical) pressure against the depressant of fluid in the bladder (called a cystometrogram), will show a very slight rise as the bladder is filled. This phenomenon is a manifestation of the law of Laplace , which states that the pressure in a spherical viscus is equal to twice the wall tension divided by the radius.
Normal human bladder storage capacity varies from person to person and is considered 400–600 mL. [18] A bladder storage disorder is any factor that increases the frequency of small volume voids. These factors are usually related to lower urinary tract symptoms that affect the capacity of the bladder. Some patients with nocturia have neither ...