Green Bryan T, Rockey Don C
Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
Gastroenterol Clin North Am. 2005 Dec;34(4):665-78. doi: 10.1016/j.gtc.2005.10.001.
Although acute LGIB is only about one fifth as common and is usually less hemodynamically significant than upper gastrointestinal bleeding, it presents numerous unique clinical challenges. The best diagnostic approach for patients with active bleeding is unknown, but urgent prepared colonoscopy is safe and likely to be beneficial (Fig. 3, Table 2). In patients who have aggressive bleeding or recurrent bleeding, it is critical for the practitioner to judge when angiography and surgery are necessary.
虽然急性下消化道出血的发生率仅约为上消化道出血的五分之一，且通常在血流动力学方面的影响较小，但它带来了许多独特的临床挑战。对于有活动性出血的患者，最佳诊断方法尚不清楚，但紧急准备的结肠镜检查是安全的，且可能有益（图3，表2）。对于有严重出血或反复出血的患者，从业者判断何时需要进行血管造影和手术至关重要。
