Linked Life Data

1415925

Source:http://linkedlifedata.com/resource/pubmed/id/1415925

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1992-10-29
pubmed:abstractText
A prospective study comparing duplex scanning and descending venography was applied to 143 venous segments in 25 extremities with moderate to severe manifestations of chronic venous insufficiency (class 2 or 3). Duplex scanning was performed with the patient in the 15 degree reverse Trendelenburg position, and descending venography with the patient in the 60 degrees semi-erect position; the Valsalva maneuver was used to elicit reflux in both tests. The duplex parameter of reflux duration greater than 0.5 second correlated with venographic reflux in 94 of 105 segments (sensitivity of 90%). Conversely, reflux time less than or equal to 0.5 second correlated with venographic competence in 32 of 38 segments (specificity of 84%). A total of 17 discrepancies were identified among the 143 total segments studied, for an accuracy of 88%. The largest proportion of discrepancies was identified in the group with venographic competence and reflux duration greater than 0.5 second and less than or equal to 2.0 seconds; this was designated a gray zone. Mean peak velocities were significantly higher in the reflux group when compared with the competence group in the profunda femoris vein (p = 0.047), greater saphenous vein (p less than 0.001), popliteal vein (p less than 0.001), and tibial vein (p = 0.005). We conclude that venographic reflux correlates best with duplex scan findings of reflux duration greater than 0.5 second. Duration of reflux greater than 0.5 second and less than or equal to 2.0 seconds, however, represents a gray zone and should be interpreted with caution since this could lead to over-reading of reflux disease, in which case verification of incompetence by descending venography may be indicated.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0002-9610
pubmed:author
pubmed:issnType
Print
pubmed:volume
164
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
254-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Prospective comparison of duplex scanning and descending venography in the assessment of venous insufficiency.
pubmed:affiliation
Department of Vascular Surgery, Straub Clinic and Hospital, Honolulu, Hawaii.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't