Slotted stainless Palmaz stents (PS) remain the most commonly used in @entity299 ( @entity299 ). Limitations of PS include @entity2003 , foreshortening, poor conformability on expansion, @entity397 , and jailing of side branches. Recently, stents with open-cell design (IntraStent; IS) in appropriate sizes for @entity299 have been introduced. We reviewed our experience with the IS, comparing performance with the PS in a retrospective nonrandomized, uncontrolled observational study. Between May 1999 and March 2001, 34 IS (10-36 mm) and 34 PS (10-40 mm) were implanted in 57 @entity1 (3 months to 25 years old; median, 3.24 years) in @entity282 . There was no statistically significant difference between the two groups in efficacy, % diameter increase (162% +/- 203% for IS vs. 153% +/- 177% for PS), and % gradient reduction (69% +/- 23% for IS vs. 80% +/- 27% for PS). Other aspects of stent performance differed significantly (P < 0.05): PS forshortened more (mean 18% for PS vs. 0% for IS) and were associated with @entity397 (9/34 for PS vs. 0/34 for IS; P = 0.002), but had no evidence of intimal protrusion in between struts (0/34 for PS vs. 14/34 for IS; P < 0.001) and no recoil > 15% (0/34 for PS vs. 7/34 for IS; P = 0.006); IS conformed almost twice as well to vessel curvature (P = 0.003). Although these factors did not affect immediate procedural success, @entity397 in two PS resulted in stent malpositions. Among IS, the origins of three covered side branches were accessed and balloon dilated up to 6 mm through the side of the stent. In conclusion, stents with open-cell design have some characteristics that seem beneficial for their use in @entity299 : they foreshorten less, are conformable, are less likely to cause @entity397 , and can allow access to jailed branches. However, they have a higher incidence of significant percent recoil and protrusion of intimal tissue in between struts, which may impact long-term stent performance.

Open-cell design stents in XXXX : a comparison of IntraStent vs. Palmaz stents.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity2003 :: ('MESH:D009127', 'Disease') :: ['rigidity'] @entity397 :: ('MESH:D012421', 'Disease') :: ['balloon rupture'] @entity299 :: ('MESH:D006331', 'Disease') :: ['CHD', 'congenital heart disease'] @entity282 :: ('MESH:D010149', 'Disease') :: ['congenital or postoperative lesions']
@entity299 :: (MESH:D006331,Disease) :: ['congenital heart disease']
