Table 3 Intravascular ultrasound findings.

From: Intravascular ultrasound assessment of stent edge restenosis mechanisms and treatment outcomes following percutaneous coronary intervention

 

n = 126

Procedure quantitative assessment

Distal reference lumen area, mm2

5.0 (4.0, 6.3)

Proximal reference lumen area, mm2

6.7 (5.9, 8.7)

MLA, mm2

2.3 (1.7, 2.9)

Minimum lumen diameter, mm

1.9 (1.6, 2.1)

Minimum stent area, mm2

6.4 (5.6, 7.8)

Minimum stent area < 4.0 mm2

27 (21.4)

Maximal NIH area, %

65.7 (50.4, 72.5)

Minimum stent expansion, %

65.8 (52.7, 76.2)

Minimum stent expansion < 70%

62 (49.2)

Minimum stent expansion < 50%

23 (18.3)

MSA < 4.0 mm2 or stent expansion < 50%

33 (26.2)

Largest stent area, mm2

9.2 (7.6, 10.2)

Stent eccentricity index

0.79 (0.75, 0.82)

Maximum calcium arc behind the stent, °

165 (86, 282)

Maximum calcium arc within the stent, °

85 (0, 147)

Post-procedure quantitative assessment

Minimum stent area*, mm2

7.0 (6.2, 9.0)

Minimum stent expansion, %

71.8 (61.3, 80.6)

  1. Values are the mean ± standard deviation, number (%), or median (interquartile range).
  2. SER stent edge restenosis, NIH neointimal hyperplasia, MLA minimum lumen area, DCB drug-coated balloon, DES drug-eluting stents.
  3. *For cases where a new drug-eluting stent was implanted, the measured stent area corresponds to the newly placed stent; otherwise, it reflects the previous stent area following drug-coated balloon treatment.
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