to investigate the possibility that adenosine might be causally involved in hypoxic conduction disturbances , we measured a-v conduction times , subdivided into atrial-to-his bundle ( a-h ) and his bundle-to-ventricular ( h-v ) intervals , with extracellular electrodes in isolated rabbit and guinea pig hearts perfused with modified krebs-henseleit solution .
C0006382
his bundle
C0018787
hearts