Heart rate (beats/min) | 369 (11) | 390 (21) | 381 (17) | 372 (7) |
Mean aortic pressure (mm Hg) | 51 (0.4) | 52 (1.2) | 49 (0.7) | 47 (0.5) |
Left ventricular pressure |
Systolic (maximum) | 94 (2) | 91 (4) | 88 (1.2) | 82 (2.1)* |
Diastolic (minimum) | −6.3 (0.5) | −4.2 (3.5) | −1.3 (1.8) | 1.5 (0.6) |
End diastolic | 6.6 (2) | 8 (2.4) | 5.3 (0.5) | 6.4 (0.6) |
Coronary flow (ml/min/g) | 12.5 (1) | 11.5 (0.5) | 12.3 (1.4) | 10.9 (1.1) |
Left ventricular minute work (mm Hg × ml/min) | 255 (3) | 259 (5) | 248 (4) | 245 (6.7) |
Time to peak pressure (ms) | 34 (0.9) | 35 (0.8) | 33 (0.5) | 33 (0.7) |
Time of relaxation (ms) | 41 (0.6) | 46 (0.9)* | 38 (1.2) | 45 (1.4)* |
Time to peak pressure (ms/mm Hg) | 0.414 (0.015) | 0.483 (0.021) | 0.402 (0.006) | 0.443 (0.009) |
Time to half relaxation (ms/mm Hg) | 0.497 (0.013) | 0.553 (0.018) | 0.513 (0.007) | 0.661(0.009)* |
Maximum rate of contraction (+dP/dt, mm Hg/s) | 2575 (44) | 2476 (124) | 2477 (47) | 2258 (72)* |
Maximum rate of relaxation (−dP/dt, mm Hg/s) | −2565 (92) | −2463 (148) | −2403 (76) | −1913 (98)* |