Noudeh Younes Jahangiri, Sadigh Nader, Ahmadnia Amir Yousef
Medical Students Research Committee, Faculty of Medicine, Iran University of Medical Sciences, Hemmet Expressways, Tehran, Iran.
Int J Surg. 2007 Apr;5(2):95-8. doi: 10.1016/j.ijsu.2006.03.009. Epub 2006 May 18.
Appendicitis is the most common acute surgical condition of the abdomen. Age, sex and seasonal variations have been observed in many studies. To describe and find the possible differences in the epidemiology of acute appendicitis in Shahr-e-Rey, we carried out a retrospective study of all patients with acute appendicitis admitted to Shohadaay-e Haftom-e Tir hospital as it is the only hospital in this restricted part of Tehran.
Using hospital discharge abstract of patients who were admitted with the diagnosis of acute appendicitis from summer 1996 to spring 2004, we studied the demographic features, particularly age and sex, date of admission and final diagnosis of these patients.
During the observation period, 1093 cases were admitted with the diagnosis of acute appendicitis. Of these, 74.4% were males and 6.1% were not actually an acute appendicitis. The age-specific incidence of acute appendicitis has different patterns in male and female. The incidence was highest in males aged 20-29 years whereas in females the highest incidence was observed in 10-19 years age group. A significant seasonal effect was also observed, with the rate of acute appendicitis higher in the summer months (p<0.006). The rate of false positive diagnosis was highest in the patients aged 0-9 years (p<0.0001). Of those correctly diagnosed, 85.5% had uncomplicated acute appendicitis; 8.3% had perforation; and others (6.2%) had acute appendicitis complicated with other situations.
Appendicitis is more common in males, in those aged 20-29 years, and during the summer months. The age-specific incidence and sex ratio of acute appendicitis give the impression that epidemiologic features of acute appendicitis are different with worldwide data. However, the seasonal variation and false positive rate of acute appendicitis are in a good agreement with other studies.
阑尾炎是腹部最常见的急性外科病症。许多研究观察到了年龄、性别和季节变化。为了描述并找出雷伊市急性阑尾炎流行病学可能存在的差异，我们对所有因急性阑尾炎入住霍斯哈达伊 - 提尔七月医院的患者进行了一项回顾性研究，因为该医院是德黑兰这一特定区域内唯一的医院。
利用1996年夏季至2004年春季因急性阑尾炎诊断入院患者的医院出院摘要，我们研究了这些患者的人口统计学特征，尤其是年龄和性别、入院日期及最终诊断。
在观察期内，1093例患者因急性阑尾炎诊断入院。其中，74.4%为男性，6.1%实际上并非急性阑尾炎。急性阑尾炎的年龄别发病率在男性和女性中有不同模式。男性中20 - 29岁年龄组发病率最高，而女性中10 - 19岁年龄组发病率最高。还观察到显著的季节效应，夏季急性阑尾炎发病率较高（p<0.006）。假阳性诊断率在0 - 9岁患者中最高（p<0.0001）。在那些被正确诊断的患者中，85.5%患有非复杂性急性阑尾炎；8.3%有穿孔；其他（6.2%）患有合并其他情况的急性阑尾炎。
阑尾炎在男性、20 - 29岁人群以及夏季更为常见。急性阑尾炎的年龄别发病率和性别比给人的印象是其流行病学特征与全球数据不同。然而，急性阑尾炎的季节变化和假阳性率与其他研究结果高度一致。
