in rats excreting a highly alkaline urine , an acute increase in blood pco2 ( from 42 +/- 0.8 to 87 +/- 0.8 mmhg ) resulted in a significant fall in urine minus blood ( u-b ) pco2 ( from 31 +/- 2.0 to 16 +/- 4.2 mmhg , p less than 0.005 ) , a finding which could be interpreted to indicate inhibition of collecting duct h+ secretion by hypercapnia .
C0085639
fall
C0037088
finding