Sim K T, Picone S, Crade M, Sweeney J P
J Natl Med Assoc. 1989 Sep;81(9):954-7.
Acute appendicitis is the most common diagnosis made (in the Western world) in patients with an "acute abdomen." Although the mortality rate has been vastly reduced, the diagnostic inaccuracy rate of 15% to 20% has remained unchanged in the past 100 years. In this article, the authors report the ultrasonographic findings in 80 patients examined using a small linear-array transducer, which enables direct visualization of the inflamed appendix. During 22 months, 80 patients (28 males and 52 females; age range, 3 to 81 years; mean, 32.3 years) with equivocal clinical signs and symptoms of acute appendicitis were examined sonographically. Of the 29 patients whose appendicitis was verified at surgery, ultrasonography was positive in 26, with an overall sensitivity of 90%. Of the 51 patients who did not have appendicitis, ultrasonography was negative in all, with a specificity of 100%. The authors concur with reports in the literature that ultrasonography is helpful in diagnosing appendicitis.
急性阑尾炎是（在西方世界）“急腹症”患者中最常见的诊断疾病。尽管死亡率已大幅降低，但在过去100年里，15%至20%的诊断错误率仍未改变。在本文中，作者报告了使用小型线性阵列换能器对80例患者进行超声检查的结果，该换能器能够直接观察发炎的阑尾。在22个月期间，对80例临床症状和体征不明确的急性阑尾炎患者进行了超声检查。其中29例经手术证实为阑尾炎的患者中，超声检查阳性26例，总体敏感性为90%。51例无阑尾炎的患者中，超声检查全部为阴性，特异性为100%。作者赞同文献中的报道，即超声检查有助于诊断阑尾炎。
