Table 1.

Measured parameters during each of the interventions

nAoP, mmHgHR, min−1DP WorkCBF LV, ml·g−1·min−1CBF RV, ml·g−1·min−1CBF/CO, %MRO2 LV, μl O2·g−1·min−1RDLV, %RDRV, %
C1 control 14Mean ± SD97 ± 1279 ± 129.4 ± 0.40.54 ± 0.140.37 ± 0.123.1 ± 0.845 ± 625.4 ± 3.428.4 ± 9.2
Range21–3220–42
LM LoMetab3Mean ± SD131 ± 22173 ± 5826.2 ± 8.51.56 ± 0.561.18 ± 0.335.3 ± 1.4144 ± 1922.9 ± 1.428.0 ± 13.1
Range22–2425–40
HiMetab4Mean ± SD171 ± 22200 ± 3836.5 ± 8.62.41 ± 0.921.61 ± 0.667.0 ± 1.2206 ± 4924.5 ± 3.228.8 ± 5.3
Range21–2824–37
HM + Ado4Mean ± SD107 ± 8185 ± 2225.0 ± 2.44.20 ± 0.913.70 ± 0.6811.9 ± 2.4179 ± 7520.0 ± 5.415.9 ± 1.8
HiMet VasodRange13–2615–20
C23Mean ± SD101 ± 5181 ± 1020.9 ± 1.60.98 ± 0.160.64 ± 0.254.5 ± 0.671 ± 1625.6 ± 4.227.3 ± 6.9
Control 2Range21–3022–36
Ado Vasodi1Mean10214719.74.173.2312.611020.418.1
  • Values are means ± SD and ranges; n, no. of experiments.

  • AoP, mean aortic pressure; HR, heart rate; DP, “double product” work = heart rate times systolic aortic pressure; CBF, coronary blood flow to left ventricle (LV) and right ventricle (RV); CBF/CO, the percentage of total LV + RV coronary blood flow (ml/min)/cardiac output also in ml/min; MRO2, LV myocardial oxygen consumption; RDLV and RDRV, %relative dispersions of the distribution of regional blood flow to the left and right ventricles, respectively; C1, initial control; LM, low-level catecholamines; HM, high-level catecholamines; HM + Ado, high-level catecholamines + adenosine; C2, final control; Ado, adenosine alone was infused following the initial control in heart 4.