JACC: Cardiovascular Interventions
Volume 5, Issue 12, December 2012 DOI: 10.1016/j.jcin.2012.08.016
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Clinical Research

Self-Expanding Versus Balloon-Expandable Stents in Acute Myocardial Infarction: Results From the APPOSITION II Study
Self-Expanding Stents in ST-Segment Elevation Myocardial Infarction

Robert-Jan van Geuns, Corrado Tamburino, Jean Fajadet, Mathias Vrolix, Bernhard Witzenbichler, Eric Eeckhout, Christian Spaulding, Krzysztof Reczuch, Alessio La Manna, René Spaargaren, Héctor M. García-García, Evelyn Regar, Davide Capodanno, Glenn Van Langenhove and Stefan Verheye

Table 3

Table 3

OCT Quantitative and Qualitative Analysis

Post-ProcedureSelf-Expanding n = 36Balloon-Expandable n = 35p Value
Analysis at patient level
 Struts analyzed, n⁎ (median, IQR)607 (533, 490–647)288 (265, 217–323)<0.001
 Lumen area, mm2†7.94 ± 2.198.92 ± 2.220.07
 Stent area, mm2†8.10 ± 2.219.10 ± 2.370.07
 Lumen volume, mm3†‡200.69 (196, 155–245)208.38 (211, 140–245)0.84
 Stent volume, mm3‡205.07 (196, 155–249)213.26 (222, 134–250)0.88
 ISA area, mm2‡0.04 (0.015, 0.002–0.041)0.14 (0.043, 0.016–0.103)0.014
 Malapposed struts, %§2.20 ± 3.925.99 ± 7.28<0.001
 Mean prolapse area, mm2†‡0.20 (0.140, 0.048–0.288)0.32 (0.295, 0.182–0.428)<0.001
 Frames with ≥1 dissection, %⁎0.28 (0, 0–0)1.29 (0, 0–2)0.030
 Malapposed struts∥28 (77.8)34 (97.1)0.028
 Malapposed struts >5%∥5 (13.9)13 (37.1)0.031
 Calculated stent length, mm⁎25.56 ± 5.77 (24.0, 21.4–26.7)23.34 ± 6.69 (23.0, 18.4–26.6)0.90
Analysis at ISA strut level, n267588
 Malapposition distance, mm§0.10 ± 0.170.14 ± 0.170.93
Analysis at malapposition zone level, n66111
 Length of malapposition zone, mm⁎1.88 ± 1.88 (1, 1–2)1.77 ± 1.66 (1, 1–2)0.87
Follow-upn = 40n = 36
Struts analyzed⁎†584 ± 186 (554, 479–616)287 ± 104 (248, 222–336)<0.001
Lumen area, mm2†8.99 ± 2.398.81 ± 2.180.73
Stent area, mm2‡9.31 (8.77, 7.42–10.90)8.93 (8.47, 7.43–9.91)0.50
Lumen volume, mm3†‡227.39 (223, 175–253)207.28 (201, 147–243)0.14
Stent volume, mm3‡235.51 (234, 184–269)210.82 (208, 150–249)0.08
ISA area, mm2‡0.02 (0.007, 0–0.035)0.15 (0.055, 0.023–0.118)0.009
Malapposed struts, %§0.58 ± 0.705.46 ± 6.98<0.001
Mean prolapse area, mm2†‡0.34 (0.28, 0.15–0.46)0.27 (0.25, 0.18–0.32)0.80
Frames with ≥1 dissection, %⁎0.40 ± 1.01 (0, 0–0)0.83 ± 1.52 (0, 0–1)0.19
Malapposed struts∥24 (60.0)35 (97.2)<0.001
Malapposed struts >5%∥0 (0)10 (27.8)0.001
Calculated stent length, mm⁎25.46 ± 5.51 (24.4, 21.4–27.2)23.43 ± 6.93 (23.1, 18.8–26.6)0.65
Analysis at ISA strut level, n118537
 Malapposition distance, mm§0.19 ± 0.230.19 ± 0.200.22
Analysis at malapposition zone level, n42104
 Length of malapposition zone, mm⁎1.55 ± 1.04 (1, 1–2)1.81 ± 1.51 (1, 1–2)0.26

Values are mean ± SD (median, IQR) or n (%) unless otherwise indicated.

ISA = incomplete stent apposition; OCT = optical coherence tomography.

  • ↵⁎ Median.

  • ↵† t test on original data.

  • ↵‡ t test after log transformation.

  • ↵§ Multilevel analysis.

  • ↵∥ Fisher exact test (categorical).

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