Key result
Larger stent strut spacing increases platelet deposition by ~54% versus smaller spacing.
Why the study?
Does stent strut spacing affect platelet adhesion in a simulated flow model?
Population
Human blood with platelets labeled with indium 111 in a flat-plate flow chamber
Comparison
2-dimensional stents with different strut spacings vs Stents with smaller strut spacing vs larger…
Design
Preclinical
Follow-up
30 minutes
Authors
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Strut spacing may influence platelet deposition in flow models; leaves open optimal stent geometries for clinical thrombosis reduction.
Does stent strut spacing affect platelet adhesion in a simulated flow model?
Absolute Event Rate: 2.11% vs 1.37%
p-value: p=<0.05
Smaller stent strut spacings minimize platelet adhesion per unit strut area, highlighting the importance of mechanical factors and flow patterns in stent design to reduce restenosis.
Robaina et al. (2003) studied Stent restenosis. Stent strut spacing vs. Smaller strut spacing (2.5 times strut height) was evaluated on Normalized platelet deposition (p=<0.05). Stents with larger strut spacing had higher normalized platelet deposition (2.11 for the 4.0 model and 1.71 for the 7.0 model) than stents with smaller strut spacing (1.37 for the 2.5 model; p<0.05).