Ghassan Shaath et al.
Cath Cardiovasc Interv 2012;79:659-664.
n=43 babies.
Mean f-up 19 mo.
36% required reintervention after at mean age of 7.4 mo.
Predictors of reintervention were the following:
1) Diagnosis of PA-IVS
2) Hospital stay > 7.5 days
3) TR gradient > 43 mmHg on the day after intervention
All were statistically-derived parameters. No good clinical explanation in the paper.
From discussion secton:
Humpl et al.Circ 2003;108:826-32 reported reintervention was more likely if TV z-score was < -5.
Fedderly et al. JACC 1995;25:460-5 reintervention was less likely if TV annulus > 11 mm and PV annulus > 7 mm.
Alwi et al. Cardiol Young 2005;15:141-7. PDA stenting is suggested if if small RV and TV z-score between -2.5 and -4.5.
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