Table 2.
Baseline | Washout 2 | Time after reperfusion (min) | ||||
---|---|---|---|---|---|---|
3 | 15 | 30 | 60 | |||
Heart rate (min−1) | ||||||
Control | 366 ± 37 | 359 ± 35 | 365 ± 29 | 378 ± 5 | 372 ± 15 | 373 ± 14 |
IPC | 367 ± 11 | 360 ± 23 | 365 ± 22 | 377 ± 2 | 365 ± 20 | 361 ± 24 |
IPC + Pax | 357 ± 31 | 355 ± 32 | 276 ± 73 | 323 ± 47 | 324 ± 47 | 357 ± 20 |
MPC | 367 ± 30 | 349 ± 28 | 383 ± 28 | 383 ± 28 | 383 ± 28 | 382 ± 30 |
MPC + Pax | 346 ± 28 | 333 ± 34 | 248 ± 215 | 283 ± 142 | 375 ± 24 | 372 ± 17 |
Pax | 336 ± 25 | 280 ± 29* | 236 ± 126 | 342 ± 71 | 343 ± 69 | 344 ± 68 |
LVEDP (mmHg) | ||||||
Control | 12 ± 32 | 12 ± 5 | 53 ± 22† | 35 ± 15† | 26 ± 10 | 19 ± 7 |
IPC | 11 ± 1 | 4 ± 4 | 52 ± 22† | 24 ± 13 | 19 ± 8 | 18 ± 7 |
IPC + Pax | 14 ± 2 | 11 ± 11 | 62 ± 22† | 56 ± 32† | 45 ± 33† | 28 ± 18 |
MPC | 12 ± 3 | 15 ± 5 | 51 ± 6† | 36 ± 7† | 29 ± 6 | 24 ± 7 |
MPC + Pax | 13 ± 2 | 12 ± 4 | 57 ± 23† | 43 ± 24† | 38 ± 31 | 34 ± 34 |
Pax | 11 ± 5 | 8 ± 4 | 43 ± 17† | 23 ± 10 | 21 ± 8 | 20 ± 9 |
dP/dt max (mmHg · sec −1 1,000) | ||||||
Control | 3.3 ± 0.6 | 3.3 ± 0.6 | 0.7 ± 0.9† | 0.6 ± 0.8† | 0.6 ± 0.7† | 0.4 ± 0.5† |
IPC | 3.4 ± 1.1 | 3.5 ± 1.1 | 0.7 ± 1.0† | 1.4 ± 0.7† | 1.6 ± 0.5*,† | 1.5 ± 0.6*,† |
IPC + Pax | 3.3 ± 0.4 | 2.7 ± 0.2 | 0.1 ± 0.1† | 0.3 ± 0.2† | 0.2 ± 0.1† | 0.1 ± 0.1† |
MPC | 3.0 ± 0.4 | 2.7 ± 0.6 | 0.8 ± 0.4† | 1.0 ± 0.4† | 1.0 ± 0.3† | 1.0 ± 0.1*,† |
MPC + Pax | 2.6 ± 0.5 | 2.5 ± 0.5 | 0.1 ± 0.1† | 0.3 ± 0.2† | 0.4 ± 0.3† | 0.3 ± 0.2† |
Pax | 3.5 ± 1.1 | 3.0 ± 1.4 | 0.2 ± 0.1† | 0.4 ± 0.3† | 0.5 ± 0.4† | 0.5 ± 0.3† |
CF (mL · min −1 ) | ||||||
Control | 16 ± 3 | 15 ± 2 | 9 ± 6† | 7 ± 6† | 7 ± 5† | 7 ± 6† |
IPC | 14 ± 2 | 11 ± 5 | 7 ± 4† | 11 ± 6 | 8 ± 6 | 9 ± 6 |
IPC + Pax | 13 ± 1 | 12 ± 2 | 11 ± 2 | 5 ± 2† | 4 ± 2† | 4 ± 4† |
MPC | 16 ± 4 | 15 ± 4 | 9 ± 5† | 6 ± 3† | 5 ± 2† | 4 ± 2† |
MPC + Pax | 15 ± 2 | 14 ± 2 | 13 ± 4 | 8 ± 3† | 7 ± 4† | 6 ± 4† |
Pax | 14 ± 1 | 10 ± 2*,† | 4 ± 2† | 4 ± 2† | 3 ± 1† | 2 ± 1† |
Data are mean ± SD
IPC = ischemic preconditioning; MPC = morphine preconditioning; Pax = paxilline
LVEDP = left ventricular end-diastolic pressure; dP/dtmax = rate of left ventricular pressure development; CF = coronary flow; * P < 0.05 vs Control; † P < 0.05 vs Baseline