Key result
Longitudinal coronary stent deformation, related to stent design features such as fewer ring connectors, can result in stent thrombosis if unrecognized and untreated.
Longitudinal coronary stent deformation (the 'concertina effect') is a recognized phenomenon related to stent design that can lead to stent thrombosis if unrecognized and untreated.
Recognition of longitudinal stent deformation may avert thrombosis during PCI; leaves open optimal design modifications in future stents.
Recently, the phenomenon of longitudinal coronary stent deformation or the ‘concertina stent’ has been recognized. Bench testing has indicated that this may, in part, be related to stent design. It appears that fewer ring connectors, and in particular their orientation to the longitudinal axis of the stent, may increase the propensity of a stent to distort when traversed by the tip of a guiding catheter, postdilation balloon, further stent or indeed any other adjunctive device. The limited evidence so far indicates that this phenomenon if unrecognized and untreated can result in stent thrombosis, presumably secondary to incomplete stent apposition. Stent design, mechanisms of longitudinal compression and elongation, as well as recognition and management of the phenomenon are discussed.
No takes yet. Share an insight, caveat, or question.
Shand et al. (2012) conducted a review in Longitudinal coronary stent deformation. Drug-eluting stents was evaluated. Longitudinal coronary stent deformation, related to stent design features such as fewer ring connectors, can result in stent thrombosis if unrecognized and untreated.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: