Linked Life Data

8498296

Source:http://linkedlifedata.com/resource/pubmed/id/8498296

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1993-6-21
pubmed:abstractText
We studied 12 patients undergoing elective coronary stent implantation for either recurrent restenosis or adverse lesion appearance. By use of a 4.8F 20 MHz intravascular ultrasound catheter, the conventional angioplasty site was examined before and after coronary stent implantation. Quantitative angiographic analysis revealed the expected excellent final result with a group mean poststent diameter reduction of 14 +/- 9% and a cross-sectional area reduction of 22 +/- 13%. Angiographic analysis also indicated an increase in minimum stenosis diameter from 1.8 +/- 0.6 mm after conventional balloon angioplasty to 2.8 +/- 0.3 mm after coronary stent implantation. Quantitative analysis of the corresponding intravascular ultrasound images, however, revealed significant residual endoluminal obstruction. Fractional plaque area remained unchanged from 30 +/- 12% after conventional balloon angioplasty to 32 +/- 11% after stent implantation. The circumferential distribution of plaque increased significantly from 0.44 +/- 0.17 to 0.55 +/- 0.15 (p = 0.03) after stent implantation. Despite the lack of significant change in the ultrasound-determined minimum stenosis diameter after stent placement, there was a borderline significant increase in the plaque-free lumen area (before stent, 6.35 +/- 1.55 mm2; after stent, 7.25 +/- 1.6 mm2; p = 0.06). Thus, in contrast to the substantial improvement in the angiographically assessed residual luminal obstruction after stent implantation compared with the prestent condition, considerably less improvement was found by intravascular ultrasound-assessed examination. Morphometric analysis indicated a tendency toward circumferential remodeling of plaque. The inherently different approaches to vascular imaging represented by contrast angiography and intravascular ultrasound techniques appear to provide complementary information.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0002-8703
pubmed:author
pubmed:issnType
Print
pubmed:volume
125
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1576-83
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Intravascular ultrasonographic assessment of the results of coronary artery stenting.
pubmed:affiliation
Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia.
pubmed:publicationType
Journal Article, Comparative Study