This section is from the book "Diseases Of The Intestines", by Max Einhorn. Also available from Amazon: Diseases Of The Intestines A Text-Book For Practitioners And Students Of Medicine.
The rectum and the greater part of the large bowel should be emptied if possible before injecting the feeding enema. The latter is best accomplished by using a fountain syringe and a soft-rubber tube which is introduced for about five to seven inches into the rectum. The quantity of the feeding enema may be between five and ten ounces. As feeding enemas the following substances are used: (a) The different kinds of peptones and propeptones in the market of which about two to three ounces can be dissolved in six to eight ounces of water. The different beef juices may also be dissolved in water and injected in corresponding quantities, (b) The milk and egg enemas. These are mostly used. Their composition is as follows: Six to seven ounces of milk, one or two raw eggs well beaten up, one teaspoonful of powdered sugar, and the point of a knifeful of salt. The addition of pancreatin (one tube of Fairchild pancreatin to one enema) will facilitate assimilation, (c) Meat-pancreas enema. Leube 1 employs enemas consisting of well-chopped meat mixed with fresh pancreas.
Besides these food enemas injections of water, into the bowel are made in order to increase the amount of fluid in the system. These injections of water for the purpose of absorption are of great importance. Usually saline solutions are employed in quantities varying from one pint to one quart. The nutritive enema should be given three or four times in twenty-four hours, and the water enemas for absorption once or twice a day.