"Intravenous urography is very important in the detection of pathological conditions of the urinary tract, but the presence of intestinal gas shadows may be very confusing in the interpretation of urograms. There is considerable difference of opinion regarding the desirability of preparing patients for excretory urography. we obtained clinical impression and statistical results that intestinal gas was increased with prolonged duration after last diarrhea, also with sleeping after last diarrhea. So we attempted one new method of preparation in which employed 30cc, of castor oil for catharsis two times at night before examination and next morning 6:00 a. m. and result was compared with other methods. A total of 300 cases, for the most in-patients, consisted of 6 groups, were studied in this report. All patients had nothing by mouth after midnight until the X-rays were completed and pyelograms usually were taken in the morning. Following methods of preparation were studied. Group 1 : 60 cc. castor oil at bed time. Group 2 : 60 cc. castor oil at 4:00 a. m. Group 3 : 30 cc. castor oil at bed time and 30 cc. at 6:00 a. m. Group 4 : 60 cc. castor oil at bed time and enema in the morning. Group 5 : No cathartics and enema. Group 6 : Dulcolax 2 tablets at bed time. The X-ray films were graded as A) excellent B) good C) fair D) poor by three or more examiners. Group 3. afforded best result. We believed that result was due to prevention of intestinal fermentation by
ingestion of castor oil at bed time and passage of swallowed air before X-ray examination by repeated ingestion at 6:00 a. m. A larger series of cases over a longer period of time, for more accurate statistical study, is warranted."
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