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Table 2 Primary and secondary outcomes

From: A randomized controlled clinical trial of prolonged balloon inflation during stent deployment strategy in primary percutaneous coronary intervention for ST-segment elevation myocardial infarction: a pilot study

Outcome

PBSG (n = 60)

CDSG (n = 60)

P value

The primary outcomes

The incidence of no-reflow-no. (%)

0 (0)

18 (30)

0.002

Pre-PCI TIMI flow-no. (%)

  

0.193

 TIMI 0–1

50 (83.3)

38 (63.3)

 

 TIMI 2

4 (6.8)

6 (10)

 

 TIMI 3

6 (10)

16 (26.7)

 

Immediate after PCI TIMI flow-no. (%)

  

0.005

 TIMI 0–1

0 (0)

2 (3.3)

 

 TIMI 2

2 (3.3)

20 (33.3)

 

 TIMI 3

58 (96.7)

38 (63.3)

 

Myocardial blush grade after PCI-no. (%)

  

0.001

 0

0 (0)

0 (0)

 

 1

0 (0)

12 (20)

 

 2

24 (40)

36 (60)

 

 3

36 (60)

12 (20)

 

ST-segment resolution ≥ 50%-no. (%)

54 (90)

40 (66.7)

0.028

Corrected TIMI frame count-no. (%)

35.6 ± 14.5

49.18 ± 25.2

0.014

The secondary outcomes

30-day clinical outcomes-no. (%)

4 (13.3)

7 (23.3)

0.506

 Target vessel revascularization

2 (6.7)

3 (10)

1.000

 Recurrent myocardial infarction

1(3.3)

3 (10)

0.612

 Cardiovascular mortality

1 (3.3)

1 (3.3)

1.00

One-year clinical outcomes-no. (%)

7 (23.3)

11 (36.7)

0.399

 Target vessel revascularization

3 (10)

5 (16.7)

0.706

 Recurrent myocardial infarction

3 (10)

4 (13.3)

1.00

 Cardiovascular mortality

1 (3.3)

2 (6.7)

1.00

Others

 Distal embolization of culprit vessels-no. (%)

0 (0)

2 (3.3)

0.313

 Procedure time-min

37 ± 11.8

39 ± 18

0.572

 Radiation exposure time-min

1208.6 ± 757.7

932.69 ± 452.9

0.130

 Bleeding events-no. (%)

0 (0)

2 (3.3)

0.313