Table 1

Mean (SEM) graft microvascular blood flow measurements (perfusion units (PU)) in relation to mean arterial pressure (MAP), arterial pH, and cardiac output (CO) following graft reperfusion, during graft ischaemia, and in response to dopexamine and phenylephrine therapy

TimeFlow (PU)MAP (mmHg)pHaCO
(litre min/m2)
Biological zero13.5 (2.2)697.3888.17
5 minutes post-reperfusion74 (1.9)527.3499.20
15 minutes post-reperfusion87.5 (3.3)659.20
60 minutes post-reperfusion141.5 (2.5)507.3778.27
Postoperative141.6 (2.9)
Bowel “dusky”7.9 (0.6)
Dopexamine
 Off35.6 (1.7)
 1 μg/kg/min60.4 (1.4)70
 2 μg/kg/min87.2 (2.1)
Phenylephrine
 Trough52.8 (2.8)
 Mean110.8 (3.4)90
 Peak205.7 (7.6)