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Table 2 Angiographic and procedural characteristics stratified by the total ischemic time

From: Time to think beyond door to balloon time: significance of total ischemic time in STEMI

Characteristics

Total

Total ischemic time (min)

p value

Up to 120

121 to 240

More than 240

Total

5730

418 (7.3%)

2199 (38.4%)

3113 (54.3%)

Pre-procedural TIMI flow

 No flow

3272 (57.1%)

240 (57.4%)

1244 (56.6%)

1788 (57.4%)

0.022*

 I

1013 (17.7%)

70 (16.7%)

402 (18.3%)

541 (17.4%)

 

 II

863 (15.1%)

66 (15.8%)

297 (13.5%)

500 (16.1%)

 

 III

582 (10.2%)

42 (10%)

256 (11.6%)

284 (9.1%)

 

Number of vessels involved

 None

14 (0.2%)

0 (0%)

7 (0.3%)

7 (0.2%)

0.002*

 Single vessel (SVD)

2278 (39.8%)

177 (42.3%)

938 (42.7%)

1163 (37.4%)

 

 Multi vessels (MVD)

3430 (59.9%)

240 (57.4%)

1249 (56.8%)

1941 (62.4%)

 

 Left main (LM)

8 (0.1%)

1 (0.2%)

5 (0.2%)

2 (0.1%)

 

Infarct related artery

 None

15 (0.3%)

0 (0%)

7 (0.3%)

8 (0.3%)

0.884

 LAD

3097 (54%)

242 (57.9%)

1184 (53.8%)

1671 (53.7%)

 

 Right coronary artery

1828 (31.9%)

121 (28.9%)

712 (32.4%)

995 (32%)

 

 Left circumflex

660 (11.5%)

48 (11.5%)

244 (11.1%)

368 (11.8%)

 

 Ramus

27 (0.5%)

2 (0.5%)

10 (0.5%)

15 (0.5%)

 

 Left main

26 (0.5%)

3 (0.7%)

10 (0.5%)

13 (0.4%)

 

 Diagonal

64 (1.1%)

2 (0.5%)

27 (1.2%)

35 (1.1%)

 

 Others

13 (0.2%)

0 (0%)

5 (0.2%)

8 (0.3%)

 

Side branch involvement

 Yes

645 (11.3%)

65 (15.6%)

227 (10.3%)

353 (11.3%)

0.008*

 No

5085 (88.7%)

353 (84.4%)

1972 (89.7%)

2760 (88.7%)

 

Left ventricular dysfunction

 Yes

3239 (56.5%)

232 (55.5%)

1210 (55%)

1797 (57.7%)

0.134

 No

2491 (43.5%)

186 (44.5%)

989 (45%)

1316 (42.3%)

 

Thrombus grading

 No

409 (7.1%)

28 (6.7%)

166 (7.5%)

215 (6.9%)

0.346

 Possible

591 (10.3%)

43 (10.3%)

217 (9.9%)

331 (10.6%)

 

 Small

552 (9.6%)

35 (8.4%)

220 (10%)

297 (9.5%)

 

 Moderate

883 (15.4%)

60 (14.4%)

345 (15.7%)

478 (15.4%)

 

 Large

746 (13%)

53 (12.7%)

315 (14.3%)

378 (12.1%)

 

 Total

2549 (44.5%)

199 (47.6%)

936 (42.6%)

1414 (45.4%)

 

Intra-aortic balloon pump (IABP) used

 Yes

193 (3.4%)

10 (2.4%)

55 (2.5%)

128 (4.1%)

0.003*

 No

5537 (96.6%)

408 (97.6%)

2144 (97.5%)

2985 (95.9%)

 

Export catheter

 Yes

1887 (32.9%)

148 (35.4%)

736 (33.5%)

1003 (32.2%)

0.339

 No

3843 (67.1%)

270 (64.6%)

1463 (66.5%)

2110 (67.8%)

 
  1. LAD left anterior descending artery, TIMI thrombolysis in myocardial infarction
  2. *Significant at 5%