Table 1.
Variable | Pre-ischemia | Ischemia 30 min |
Reperfusion 10 min |
Reperfusion 60 min |
---|---|---|---|---|
dLVP/dtmax (mm Hg/s) | ||||
IR10, 60 | 2440 ± 119 | 23 ± 1 | 1450 ± 172 | 1550 ± 151 |
IR10 + RES | 2429 ± 104 | 25 ± 1 | 1913 ± 119* | |
IR10 + L-NAME | 2778 ± 191 | 23 ± 1 | 1799 ± 119* | |
dLVP/dtmin (mm Hg/s) | ||||
IR10, 60 | −2178 ± 128 | −32 ± 2 | −1151 ± 162 | −1255 ± 140 |
IR10 + RES | −2140 ± 83 | −29 ± 1 | −1944 ± 190* | |
IR10 + L-NAME | −2290 ± 134 | −29 ± 1 | −1722 ± 83* | |
Sys-dia LVP (mm Hg) | ||||
IR10, 60 | 88 ± 4 | 0.1 ± 0 | 38 ± 5 | 39 ± 4 |
IR10 + RES | 90 ± 4 | 0.1 ± 0 | 57 ± 7* | |
IR10 + L-NAME | 95 ± 5 | 0.1 ± 0 | 64 ± 4* | |
Diastolic LVP (mm Hg) | ||||
IR10, 60 | 0 ± 0 | 10 ± 3 | 17 ± 3 | 16 ± 3 |
IR10 + RES | 0 ± 0 | 1 ± 1* | 3 ± 2* | |
IR10 + L-NAME | 0 ± 0 | 3 ± 2* | 4 ± 2* | |
Coronary flow (ml/min) | ||||
IR10, 60 | 21.2 ± 2.2 | 0 ± 0 | 18.6 ± 2.4 | 19.3 ± 2.2 |
IR10 + RES | 21.6 ± 1.8 | 0 ± 0 | 19.4 ± 1.4 | |
IR10 + L-NAME | 16.3 ± 2.2* | 0 ± 0 | 15.4 ± 1.6* | |
Heart rate (beats/min) | ||||
IR 10, 60 | 215 ± 5 | 0 ± 0 | 212 ± 6 | 213 ± 4 |
IR10 + RES | 210 ± 3 | 0 ± 0 | 214 ± 7 | |
IR10 + L-NAME | 215 ± 4 | 0 ± 0 | 220 ± 4 |
IR10: 30 min of ischemia and 10 min of reperfusion; IR60 only in non-treated group; sys–dia LVP, systolic–diastolic left ventricular pressure; dLVP/dtmax, index of contractility; dLVP/dtmin: index of relaxation; N = 8–10 hearts/group. Values are mean ± SEM.
p < 0.05: IR10 + RES, IR10 + L-NAME vs. IR10, 60.