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Table 4 Predictors of flow insufficiency for the 549 bypass grafts

From: Predictors and prevention of flow insufficiency due to limited flow demand

Variables Odds ratio 95% CI p-value
Univariate analysis    
 Hyperlipidemia 0.92 (0.61–1.40) 0.70
 Hypertension 1.13 (0.73–1.74) 0.59
 Diabetes 1.01 (0.67–1.53) 0.96
 Renal failure 0.20 (0.048–0.85) 0.03
 Ejection Fraction < 40% 0.42 (0.21–0.84) 0.01
 LV mass < 250 (g) 1.12 (0.68–1.83) 0.66
 Intraaortic balloon pump 0.66 (0.36–1.21) 0.18
 Atrial Fibrillation 0.98 (0.32–2.98) 0.96
 Distal lesion (vs. proximal lesion) 1.78 (1.17–2.70) 0.007
 Graft; in-situ GEA (vs. ITA) 1.91 (1.16–3.12) 0.01
 Graft; SVG (vs. ITA) 0.84 (0.47–1.51) 0.55
 MLD > cut-off value 3.25 (2.11–5.01) <0.0001
 Female (vs. male) 1.46 (0.91–2.34) 0.12
 Grafted region; LCX (vs. LAD) 1.69 (0.99–2.89) 0.055
 Grafted region; RCA (vs. LAD) 2.51 (1.52–4.13) 0.0003
 History of PCI in the grafted region 1.58 (0.90–2.76) 0.11
 History of MI in the grafted region 1.96 (1.17–3.26) 0.009
Multivariate analysis    
 Renal failure 0.24 (0.055–1.13) 0.07
 Ejection Fraction < 40% 0.47 (0.22–1.01) 0.052
 Intraaortic balloon pump 0.85 (0.42–1.69) 0.64
 Distal lesion (vs. proximal lesion) 3.12 (1.86–5.22) <0.0001
 Graft; in-situ GEA (vs. ITA) 0.27 (0.058–1.24) 0.09
 Graft; SVG (vs. ITA) 0.19 (0.052–0.72) 0.01
 MLD > cut-off value 3.64 (2.20–6.03) <0.0001
 Female (vs. male) 1.56 (0.92–2.64) 0.10
 Grafted region; LCX (vs. LAD) 2.29 (1.22–4.27) 0.009
 Grafted region; RCA (vs. LAD) 18.21 (3.95–84.02) 0.0002
 History of PCI in the grafted region 1.23 (0.61–2.49) 0.56
 History of MI in the grafted region 2.21 (1.13–4.31) 0.02
  1. GEA: gastroepiploic artery, ITA: internal thoracic artery, LAD: left anterior descending artery, LCX: left circumflex artery, MI: myocardial infarction, MLD: minimal luminal diameter, PCI: percutaneous coronary intervention, RCA: right coronary artery.