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Table 2 Study characteristics

From: Does intravascular ultrasound provide clinical benefits for percutaneous coronary intervention with bare-metal stent implantation? A meta-analysis of randomized controlled trials

Study

DIPOL

AVID

RESIST

TULIP

OPTICUS

Enrolling years

2000 to 2002

1995 to 1998

1995 to 1997

1991 to 2001

1996 to 1998

Randomized

Yes

Yes

Yes

Yes

Yes

- Blinded?

Yes

Yes

N/A

N/A

Yes

- When?

Pre-intervention

Pre-intervention

Post-intervention

Pre-intervention

Pre-intervention

Intention-to-treat analysis

No

Yes

No

Yes

Yes

Exclusion criteria

- Long lesions

Yes (> 25 mm)

No

Yes (> 15 mm)

No

Yes (> 25 mm)

- Bifurcation

Yes

No

No

Yes

Yes

- Left main coronary artery

Yes

Yes

No

No

Yes

- Chronic total occlusion

Yes

Yes

Yes

Yes

No

- Recent acute coronary syndrome

Yes

No (except MI with TIMI flow grade < 3)

Yes

Yes

Yes

- Small vessels

Yes (≤ 2.75 mm)

Yes (< 2.5 mm)

Yes (< 3 mm)

Yes (< 3 mm)

Yes (< 2.5 mm)

- Others

Age < 18 and > 70 y; extensive calcification; saphenous vein graft lesions

Age < 18 y; non-covered dissection; large vessels (> 3.25 mm)

Previous CABG

Focal (< 20 mm) or ostial lesions

 

Pre-intervention IVUS

Yes

No

No

Yes

Yes

Post-intervention IVUS

Yes

Yes

Yes

Yes

Yes

PCI success criteria

Stent CSA/average CSA > 80%, complete apposition, stent CSA > 7.5 mm2

Stent CSA/distal CSA > 90%, complete apposition, no dissection

Stent CSA/average CSA > 80%

Stent MLD/average MLD > 80%, complete apposition, stent CSA ≥ distal CSA

Stenosis < 10% and MUSIC study criteria [10]

- PCI success by IVUS,%

96

63

61

89

82.2 and 56 (MUSIC)

Clinical follow-up, months

6

12

18

12

12

Angiographic follow-up, months

6*

 

6 (com USIC)

6

6

MACE

Death, nonfatal MI, repeat revascularization

Without explicit criteria

Death, repeat revascularization

Death, nonfatal MI, clinical TLR

Death, nonfatal MI, repeat revascularization

  1. *Angiographic follow-up was left to the discretion of the operator: 87.9% (IVUS-guided group) and 83.7% (angio-guided group). CABG or repeat PCI for any reason. IVUS, interventional ultrasound; PCI, percutaneous coronary intervention; MACE, major adverse cardiovascular events; CSA, cross sectional area; MI, myocardial infarction; TIMI, thrombolysis in myocardial infarction; CABG, coronary artery bypass graft; MLD, minimum lumen diameter; clinical TLR, ischemia-driven target lesion revascularization.