Sinus Superflex DS^© early collapse in systemic arterial duct

Abstract

We implanted two sinus Superflex DS© stents in a systemic non-stenotic arterial duct of a newborn with hypoplastic left heart syndrome. Forty-eight hours later an important collapse of the stent was detected and treated with a balloon expandable stent. Sinus Superflex DS© has been specifically designed for systemic ducts. This complication generates doubts about its radial force in this scenario.

Deformation and stenosis of the sinus‐SuperFlex‐DS stent after ductal stenting for the hybrid stage 1 procedure

“…4 Early reports suggested that SSF exerted enough radial force to maintain ductal patency in constricted ducts, with a minority of cases requiring balloon dilatation of residual narrowings (two of 22 cases). 4 Betrian-Blasco et al 6 reports two cases of early SSF collapse within 48 h of the procedure after stenting a non-stenosing neonatal duct for HLHS that required re-stenting with a balloon expandable stent.…”

Stents in Congenital Heart Disease: State of the Art and Future Scenarios

“…The former is characterized by an open-cell design to provide an effective combination between conformability and radial force, with diameters ranging from 4 mm to 9 mm; the latter has a closed-cell design and is indicated for combined treatment of aortic coarctation, with size of 5 mm and 6 mm. However, controversial outcomes have been reported: while some studies reveal positive follow-up with sufficient radial strength, good hemodynamics, and reduced wall trauma [77,78], others report early collapse due to insufficient radial force and severe restenosis [73,76].…”

“…stent (C)[68,71,72] Omnilink (O)[68,72] Saxx stent (C)[68,71,72] Precise (O)[74] Protégé (O)[70,74,75] Sinus-Repo-DS (C)[68] Sinus-SuperFlex-DS (O)[73,[76][77][78] Sinus-SuperFlex-DS (O)[73,[76][77][78] Appl. Sci.…”