Chemical Findings in the Blood of the Dog after Closed-loop Obstruction of the Jejunum

The chemical findings in the blood of 6 dogs with closed-loop obstruction of the upper jejunum are reported. The duration of life with closed loops is less than with simple obstruction. All animals showed a marked rise in non-protein nitrogen and urea nitrogen, and fall in chlorides. Usually the C0(2) combining power of the plasma is increased. The findings in closed-loop obstruction are essentially the same as in simple intestinal obstruction.