Table 1 Baseline characteristics of study groups
From: Mid-term outcomes for Endoscopic versus Open Vein Harvest: a case control study
Characteristic | Total (n = 271) | Open Harvesting (n = 182) | Endoscopic Harvesting (n = 89) | p value |
|---|---|---|---|---|
Age - yrs | 66.1 ± 9.6 | 67.5 ± 9.7 | 66.0 ± 9.6 | 0.93 |
Male - no. (%) | 223 (82) | 145 (80) | 78 (88) | 0.13 |
Body Mass Index | 28 ± 4.5 | 28 ± 4.3 | 29 ± 4.9 | 0.12 |
Hypertension - no. (%) | 207 (76) | 139 (76) | 68 (85) | 0.56 |
Diabetes - no. (%) | Â | Â | Â | 0.31 |
   No diabetes | 208 (77) | 144 (79) | 64 (72) |  |
   Diet Controlled | 9 (3) | 4 (2) | 5 (6) |  |
   Tablet Controlled | 41 (15) | 27 (15) | 14 (16) |  |
   Insulin Dependent | 13 (5) | 7 (4) | 6 (7) |  |
Hypercholesterolaemia - no. (%) | 235 (87) | 168 (92) | 67 (75) | <0.001 |
Previous MI - no./total (%) | Â | Â | Â | 0.26 |
   Last MI <30 days ago | 27/140 (19) | 22/97 (23) | 5/43 (12) |  |
   Last MI 31 - 90 days ago | 18/140 (13) | 13/97 (13) | 5/43 (12) |  |
   Last MI >90 days ago | 95/140 (68) | 62/97 (64) | 33/43 (77) |  |
Prior PCI - no. (%) | Â | Â | Â | 0.64 |
   None | 248 (92) | 166 (91) | 83 (93) |  |
   PCI >24 hrs prior to CABG | 22 (8) | 16 (9) | 6 (7) |  |
   PCI <24 hrs prior to CABG | 0 (0) | 0 (0) | 0 (0) |  |
Previous stroke - no. (%) | 23 (8) | 16 (9) | 7 (8) | 1.00 |
Renal Failure - no. (%) | 2 (1) | 0 (0) | 2 (2) | 0.11 |
Peripheral Vascular Disease - no. (%) | 40 (15) | 26 (14) | 14 (16) | 0.86 |
Pulmonary Disease - no. (%) | Â | Â | Â | 0.46 |
   None | 240 (89) | 159 (87) | 81 (91) |  |
   Asthma | 16 (6) | 13 (7) | 3 (3) |  |
   COPD | 15 (5) | 10 (4) | 5 (6) |  |
Smoking - no. (%) | Â | Â | Â | 0.75 |
   Never | 91 (34) | 60 (33) | 31 (35) |  |
   Ex-smoker | 145 (53) | 100 (55) | 45 (50) |  |
   Currently smoking | 35 (13) | 22 (12) | 13 (15) |  |
CCS grade - no. (%) | Â | Â | Â | 0.55 |
   I | 53 (20) | 41 (23) | 12 (13) |  |
   II | 102 (38) | 68 (37) | 34 (38) |  |
   III | 98 (36) | 66 (36) | 32 (36) |  |
   IV | 27 (10) | 20 (11) | 7 (8) |  |
NYHA grade - no. (%) | Â | Â | Â | 0.64 |
   I | 96 (35) | 72 (40) | 24 (27) |  |
   II | 117 (43) | 79 (43) | 38 (43) |  |
   III | 82 (30) | 57 (31) | 25 (28) |  |
   IV | 11 (4) | 7 (4) | 4 (4) |  |
LMS disease >50% - no. (%) | 68 (25) | 37 (20) | 31 (35) | 0.0165 |
Left Ventricular Function - no. (%) | Â | Â | Â | 0.03 |
   Poor <30% | 10 (4) | 7 (4) | 3 (3) |  |
   Fair 31-49% | 44 (16) | 22 (12) | 22 (25) |  |
   Good >50% | 217 (80) | 153 (84) | 64 (72) |  |
Number of distal grafts | 3.4 ± 0.8 | 3.5 ± 0.8 | 3.3 ± 0.9 | 0.24 |
Parsonett Score | 8.3 ± 6.6 | 8.6 ± 6.9 | 8.2 ± 6.4 | 0.67 |
EuroSCORE | 3.4 ± 2.3 | 3.4 ± 2.5 | 3.2 ± 1.9 | 0.50 |
Bypass time - min | 83.3 ± 23.9 | 81.9 ± 22.5 | 86.3 ± 26.5 | 0.15 |
Cross-clamp time - min | 64.9 ± 18.8 | 64.0 ± 17.7 | 66.8 ± 20.9 | 0.24 |
Operative Priority - no. (%) | Â | Â | Â | 0.0014 |
   Elective | 232 (86) | 146 (80) | 86 (97) |  |
   Urgent | 36 (13) | 33 (18) | 3 (3) |  |
   Emergency | 3 (1) | 3 (2) | 0 (0) |  |