Medical group, FFR ⩾ 0.75 (n=24) |
Surgical group, FFR < 0.75 (n=30) | |
Male | 18 (75%) | 26 (87%) |
Age (years) | 60 (9) | 63 (9) |
Risk factors | ||
Hypertension | 4 (17%) | 9 (30%) |
Diabetes | 8 (33%) | 6 (20%) |
Raised cholesterol | 8 (33%) | 14 (47%) |
Smoking1-150 | 7 (29%) | 19 (63%) |
Family history1-150 | 4 (17%) | 16 (53%) |
Previous PTCA | 2 (8%) | 4 (13%) |
Previous infarction | 8 (33%) | 5 (16%) |
CCS class | 2.8 (1.0) | 3.4 (0.9) |
Stress test performed | 13 (54%) | 10 (33%) |
Positive/negative/inconclusive | 8/1/4 | 7/1/2 |
Ejection fraction (%) | 55 (8) | 57 (6) |
Additional disease | ||
One/two vessel disease | 10/6 | 10/13 |
Duration of follow up (months) | 28 (15) | 29 (14) |
Angiographic data | ||
Reference diameter (mm) | 4.06 (0.67) | 3.45 (0.59)1-150 |
Minimum lumen diameter (mm) | 2.35 (0.46) | 1.95 (0.39)1-150 |
Diameter stenosis (%) | 42 (9) | 43 (10) |
Pressure data | ||
Pa (mm Hg) | 90 (13) | 95 (18) |
Pd (mm Hg) | 81 (10) | 63 (14)1-150 |
Fractional flow reserve | 0.90 (0.06) | 0.67 (0.09)1-150 |
Values are n (%) or mean (SD).
↵1-150 p < 0.05.
CCS, Canadian Cardiovascular Society; FFR, fractional flow reserve; Pa, aortic pressure; Pd, mean hyperaemic coronary pressure just distal to the left main coronary artery; PTCA, percutaneous transluminal coronary angioplasty.