[Transportal hyperalimentation with fat emulsion as the treatment of experimental acute pancreatitis]

Twenty dogs were divided into four groups. Group A; IVH without Fat emulsion was performed transvenously. Group B: IVH with Fat emulsion transvenously. Group C; IVH without Fat emulsion transportally. Group D: IVH with Fat emulsion transportally. Infusion dose was for 24 hours. The results were as follows: 1) Blood sugar and I.R.L.: In group B and D, both blood sugar and I.R.I. reached the peak at the 24th hour. However, in the 1st week, they became normal value. In group D, Blood sugar was higher than that in group B, but I.R.I. value was lower. 2) Free fatty acid (FFA): in group A and C, FFA were gradually increased, but in group B and D, they reached the preoperative value in the 1st week. In group D, it was lower than that in group B. 3) Histological findings of the liver: in group A-D, lobular necrosis and fat degeneration were seen. In this study, we emphasized that transportal hyperalimentation with fat emulsion as the treatment of acute pancreatitis was physiologically effective especially in control of blood sugar and inhibition of lipolysis.

Brain damage after deep hypothermia in dogs

Histopathological and succinic acid dehydrogenase (SAD) activity changes, and the electron spin resonance (ESR) were examined in the brains of dogs exposed to various hypothermic conditions. A simple hypothermic cardiac arrest of 5 min duration occurred in the group subjected to 28 degrees C, and normal SAD activity was noted in dogs exposed 1-hour extracorporeal circulation under normothermia. In cases of a hypothermia below 28 degrees C, a decrease in enzyme activity, marked histopathological changes and the disappearance of the ESR signal were observed. In dogs killed immediately after induction of 20 degrees C hypothermia, the histopathological changes were primarily ischemic in nature, while in dogs killed at 1-12 month intervals after the experiments, irreversible gliosis was dominant. Our findings suggest that, to avoid brain damage under conditions of deep hypothermic circulatory arrest, the critical range is between 26-28 degrees C for rectal, and approximately 28-30 degrees C for brain temperature.