Balloon angioplasty in XXXX : a multicentric study in Mexico.

@entity1 @entity101 @entity384 @entity509 @entity1498
OBJECTIVES: To analyze immediate and long-term results of @entity384 for @entity1498 in a three-center experience in Mexico, and to determine factors associated with increased risk. BACKGROUND: Results demonstrated that the procedure is effective and safe, however its use in some groups is still controversial, specially in neonates and @entity1 . METHODS: In a ten-year period, 333 @entity1 with @entity1498 on underwent @entity384 with an immediate success rate of 93.7% and a major complication incidence of 1.8%. Of the total cohort, 272 @entity1 were followed for a period of 24.3 +/- 20 months. Demographic and procedural data were analyzed to determine factors related to a poor outcome or to sustained @entity101 . RESULTS: Cox regression analysis found age (risk ratio 3.42 p = 0.0001), @entity509 (risk ratio 4.64, p < 0.0001), and post-dilation gradient (risk ratio 2.19, p = 0.0113) as independent risk factors for a follow-up event, mainly restenosis. Age at dilation was the only independent factor related to sustained @entity101 with a seven-fold increase in the risk. CONCLUSIONS: Balloon dilation is an effective and safe alternative to treat @entity1498 . @entity1 younger than one year of age, with severe @entity509 and a post-dilation gradient > 20 mmHg have the highest risk to develop an event in the follow-up period. When the dilation procedure is performed in @entity1 older than 10 years of age, and specially those older than 20 years, the probability that they remain or develop @entity101 is increase.
