Linked Life Data

6842725

Source:http://linkedlifedata.com/resource/pubmed/id/6842725

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1983-6-10
pubmed:abstractText
In order to quantitatively define the mechanism of urereterovesical junction (UVJ) competence and vesicoureteral reflux, we measured ureteral pressures using a continuously perfused catheter with a single side opening. Studies were performed under general anesthesia on 11 competent and 9 refluxing UVJs. The amplitude of ureteral contractions was essentially the same in refluxing and non-refluxing systems, but peristaltic frequency was significantly lower in the presence of even the milder forms of reflux. With the bladder empty, a high pressure zone was observed at the UVJ in both refluxing and non-refluxing systems, with no significant pressure difference between the 2 groups. No relaxation was observed during urine transport across the UVJ. With bladder filling, a greater increase in profile pressure occurred at the UVJ of non-refluxing than refluxing systems. The UVJ-bladder pressure gradient of non-refluxing systems increased with bladder filling, whereas the gradient in the refluxing systems decreased. It appears that refluxing ureters have a decreased peristaltic frequency and fail to maintain a pressure gradient at the UVJ with bladder filling.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0022-5347
pubmed:author
pubmed:issnType
Print
pubmed:volume
129
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
858-61
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Characteristics of normal and refluxing ureterovesical junctions.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.