Variable | Patient group | Before angioplasty | After angioplasty | p Value |
---|---|---|---|---|
Mean blood pressure (mm Hg) | All patients (n = 31) | 98 (16) | 95 (16) | NS |
Patients with visible collaterals (n = 11) | 96 (14) | 95 (15) | NS | |
Patients without visible collaterals (n = 20) | 99 (19) | 96 (18) | NS | |
Heart rate (beats/min) | All patients (n = 31) | 74 (6) | 75 (10) | NS |
Patients with visible collaterals (n = 11) | 71 (6) | 74 (7) | NS | |
Patients without visible collaterals (n = 20) | 75 (6) | 76 (11) | NS | |
Contralateral baseline APV (cm/s) | All patients (n = 31) | 21 (9) | 12 (6) | 0.000000 |
Patients with visible collaterals (n = 11) | 20 (6) | 11 (4) | 0.0008 | |
Patients without visible collaterals (n = 20) | 22 (10) | 13 (7) | 0.00007 | |
Contralateral hyperaemic APV (cm/s) | All patients (n = 31) | 47 (19) | 34 (15) | 0.00004 |
Patients with visible collaterals (n = 11) | 42 (11) | 30 (10) | 0.03 | |
Patients without visible collaterals (n = 20) | 50 (23) | 36 (17) | 0.0006 | |
Contralateral coronary flow reserve | All patients (n = 31) | 2.4 (0.7) | 2.9 (0.6) | 0.0003 |
Patients with visible collaterals (n = 11) | 2.2 (0.8) | 3.0 (0.8) | 0.00006 | |
Patients without visible collaterals (n = 20) | 2.5 (0.6) | 2.8 (0.4) | NS | |
Ipsilateral baseline APV (cm/s) | All patients (n = 31) | — | 14 (6) | — |
Patients with visible collaterals (n = 11) | — | 17 (7) | — | |
Patients without visible collaterals (n = 20) | — | 12 (5) | — | |
Ipsilateral hyperaemic APV (cm/s) | All patients (n = 31) | — | 30 (17) | — |
Patients with visible collaterals (n = 11) | — | 36 (23) | — | |
Patients without visible collaterals (n = 20) | — | 26 (12) | — | |
Ipsilateral coronary flow reserve | All patients (n = 31) | — | 2.2 (0.4) | — |
Patients with visible collaterals (n = 11) | — | 2.1 (0.7) | — | |
Patients without visible collaterals (n = 20) | — | 2.2 (0.3) | — |
Values are mean (SD).
The variables studied were not statistically different in the two subgroups. APV, average peak velocity.