Ischemic colitis is a serious complication of abdominal aortic surgery. Patients with bilateral internal iliac aneurysm have a high risk of ischemic colitis after operation. A 72-year-old man had infrarenal abdominal aneurysm, bilateral common and internal iliac aneurysm and an occluded right internal iliac artery. We examined the flow of the superior rectal artery during operation by transanal Doppler, and intramucosal pH of the sigmoid colon by a tonometer after operation. The flow of the superior rectal artery did not change after clamping of the left common iliac artery, clamp of the infrarenal aorta. He underwent uneventful abdominal aortic aneurysmectomy, Y-grafting and exclusion of bilateral internal iliac aneurysms. The intramucosal pH of the sigmoid colon returned to the normal range 25h after surgery. He had no complications after surgery. Transanal Doppler examination was essential for the successful prevention of postoperative colonic ischemia, and intestinal intramural pH by tonometry was an early reliable marker of the absence of ischemic colitis.

During a period of 5 years from January 1991 to December 1995, one-stage operation was performed on 10 cases with ischemic heart and occlusive peripheral vascular disease, excluding cases combined with AAA (abdominal aortic aneurysm). They were composed of 7 men and 3 women whose mean age at time of surgery was 65.8 years. The mean number of coronary artery bypass grafts made was 2.2. The procedures employed for occlusive peripheral vascular disease were TEA (thromboendarterectomy) of the internal carotid artery in 2 cases, aorta-subclavian bypass in 2 cases, aorta-bilateral common iliac artery bypass in 1 case, interposition of the common iliac artery in 1 case, aorta-external iliac artery bypass in 1 case, F-P (femolo-popliteal) bypass in 3 cases (4 bypasses), and F-T (femolo-tibial) bypass in 1 case. Mean operation time was 428 minutes, mean extracorporeal circulation time was 121 minutes, and mean aortic cross-clamp time was 61 minutes. Blood transfusion was not made in 4 cases. There was one operative death in a case of MNMS (myonephropatic metabolic syndrome) with emergency IABP (intraaortic balloon pumping) insertion following complication of PMI (perioperative myocardial infarction). A comparative study was made with 183 non-emergency cases of CABG (coronary artery bypass graft) conducted during the same period. Operation time was longer in cases of one-stage operation, but no significant difference was observed in operative mortality rate, rate of cases not requiring blood transfusion, days of intubation, and postoperative hospitalization duration. The surgical procedure was relatively safe.

The present experiment aims to examine the efficiency of estrus synchronization using progesterone and equine chorionic gonadotrophin (eCG) and to look at luteal function. During the non-breeding and breeding season, 5 adult female Korean native goats were injected intramuscularly with 2.5 ml of physiological saline as the control. A progesterone impregnated intravaginal sponge was then kept in the same goats for 10 days followed, after a week, by an intramuscular injection of 500 IU eCG. Five adult female Nubian goats were mated with a fertile buck during the non-breeding season. During the non-breeding season 2 of the 5 goats showed a normal estrous cycle (ranging from 18 to 21 days) and 3 a short estrous cycle (ranging from 3 to 6 days). During the breeding season the equivalent figures were 1 and 2. The major axes of the corpus luteum (CL) were measured by means of calipers built into the ultrasonography system, and the concentrations of plasma progesterone (P(4)) were determined by double antibody radioimmunoassay. The mean major axes of the CL in goats showing the short cycle (6.1 +/- 0.5 mm) was significantly smaller than in those showing the normal cycle (8.9 +/- 0.5 mm; p < 0.01) and also the value of P4 in goats showing the short cycle (4.2 +/- 2.1 ng/ml) was significantly lower than for those showing the normal cycle (10.3 +/- 4.3 ng/ml; p < 0.05) at day 3 following ovulation. Three out of 5 Nubian goats became pregnant but only one goat carried to full term. The present experiment indicated that a combination of progesterone and eCG was effective in inducing estrus, although it resulted in a high incidence of short luteal lifespan. The low kidding rate and high incidence of embryonic loss may be due to the instability of the luteal lifespan.
Animals ; Chorionic Gonadotropin/*pharmacology ; Corpus Luteum/*drug effects/*physiology ; Estrus Synchronization/*drug effects/physiology ; Female ; Fertility/*drug effects ; Fertility Agents, Female/pharmacology ; Goats/*physiology ; Horses ; Pregnancy ; Progesterone/blood/*pharmacology