MacDonald M H, Pascoe J R, Stover S M, Meagher D M
Veterinary Medical Teaching Hospital, Davis, California.
Vet Surg. 1989 Nov-Dec;18(6):415-23. doi: 10.1111/j.1532-950x.1990.tb01116.x.
The authors examined factors influencing survival in 140 horses that recovered from anesthesia after small intestinal resection between 1968 and 1986, using Kaplan-Meier estimated survival curves and the Cox proportional hazards regression model. Seventy-two horses (51%) died during the initial postoperative period, 19 horses (14%) died after discharge from the hospital, 33 horses (24%) were alive, and 16 horses (11%) were classified as censored. Mean age at surgery was 8 years. Horses 15 years of age or older, Arabians and Stallions, were overrepresented in the hospital population. The most common reason for resection was strangulation of bowel through a mesenteric rent. The mean and 50% median survival times were 1540 and 27 days, respectively. Horses admitted after January 1, 1980, had a significantly longer survival than those admitted before that time. Survival was longer after anastomosis of two small intestinal segments than after anastomosis of a small intestinal segment to the cecum; however, the length of bowel resected and the method of anastomosis had no demonstrable influence on survival. Of the variables studied, the heart rates at presentation and 24 hours after surgery were the most accurate predictors of survival.
作者使用Kaplan-Meier估计生存曲线和Cox比例风险回归模型，研究了1968年至1986年间140匹小肠切除术后从麻醉中恢复的马的生存影响因素。72匹马（51%）在术后初期死亡，19匹马（14%）在出院后死亡，33匹马（24%）存活，16匹马（11%）被归类为截尾。手术时的平均年龄为8岁。15岁及以上的马、阿拉伯马和种马在住院马群中占比过高。切除的最常见原因是肠管通过肠系膜裂孔发生绞窄。平均生存时间和50%中位生存时间分别为1540天和27天。1980年1月1日之后入院的马的生存时间明显长于该时间之前入院的马。两段小肠吻合后的生存时间长于小肠段与盲肠吻合后的生存时间；然而，切除肠管的长度和吻合方法对生存没有明显影响。在所研究的变量中，就诊时和术后24小时的心率是生存的最准确预测指标。
