Renal vascular system in stenosis of the pulmonary trunk with different level of circulatory compensation.

ABSTRACT

Stenosis of the pulmonary trunk impaired outflow of venous blood from the kidneys and oxygen supply to renal tissues. This was paralleled by adaptation increase in renal artery tone and rearrangement of some renal artery by the terminal type. Under conditions of decompensated stenosis these reactions are less pronounced in comparison with compensated defect and do not correspond to the level of hemodynamic disorders, which leads to more pronounced structural changes in glomeruli.