[Relationship between adaptation mechanisms and the level of functioning of the cardiovascular system in children with abnormalities of the large intestine and anorectal region].

The reserve potential of children with developmental defects of the large intestine and the anorectal area was assessed from cardiovascular function and its adaptation to the new level (determined from the vegetative tone) and adequacy of tissue perfusion. Forty-three children with the above disease, aged 2 months to 14 years, were examined. Three types of hemodynamic disorders were detected, corresponding to certain states of adaptation mechanisms. The hyperdynamic type corresponded to adequate adaptation, manifesting by moderate activation of the sympathoadrenal system during the first hours postoperation and its normalization during the first 24 hours. Dysadaptation disorders were detected in patients with the initial normodynamic circulation and pathological adaptation in those with the hypodynamic circulation, which was to be corrected both before and after surgery.