[Intensity of the blood supply to various organs in alert cats]

The blood flow was simultaneously measured in brain, kidney, intestine, spleen and hindlimbs of alert cats by means of hydrogen clearance method. The clearance curves were recorded with the aid of concentric electrodes set around intact veins of the organs. The following values of organ blood flow were obtained in alert cats at resting: brain--0.73 +/- 0.025 ml/g/min; kidney --1.83 +/- 0.16 ml/g/min; intestine--0.87 +/- 0.03 ml/g/min; spleen--0.61 +/- 0.026 ml/g/min; hind-limbs--0.28 +/- 0.01 ml/g/min. Methods of hydrogen clearance as well as the precision of organ blood flow measurements are discussed.