AlHarmi Rawan A Rahman, Almahari Sayed Ali, AlAradi Jasim, Alqaseer Asma, AlJirdabi Noof Sami, Ahmed Fatema Ali
Department of Surgery, Salmaniya Medical Complex, Manama, Bahrain.
Department of Pathology, Salmaniya Medical Complex, Manama, Bahrain.
Surg Res Pract. 2021 Mar 2;2021:8811898. doi: 10.1155/2021/8811898. eCollection 2021.
To investigate whether the incidence of acute appendicitis increases in summer and whether complicated cases present more in summer.
A single-center cross-sectional, retrospective study on 697 cases of appendicitis admitted in the year 2018. Inclusion criteria: patients admitted with acute appendicitis who underwent appendectomy of all ages. Exclusion criteria: conservative management. Analysis was performed using Microsoft Excel. Pearson correlation coefficient was calculated to assess the correlation between monthly incidence of appendicitis and mean temperature in that month.
Fifty-one patients who were managed conservatively were excluded. Accordingly, 646 patients were included. Ages ranged from three to 77 years. Males comprised the majority (500, 77.4%). Gangrenous, perforated, and purulent appendices were regarded as complicated appendicitis. The highest number of cases were admitted in summer (234), comprising 36.2% of cases. Complicated cases were equal to 65, of which 23 (35.4%) were admitted in summer and 30 (46.2%) in winter. The highest number of cases was during the month of July (68), while the lowest (40) was during February. This corresponded to the highest recorded mean temperature (36.2°C) and second lowest (19.8°C), respectively. Moderate positive correlation (Pearson's R 0.5183) between the monthly incidence of appendicitis and the mean temperature is noted.
More cases of appendicitis were noted during summer. Monthly incidence correlated positively with the temperature. Larger numbers over several years are needed to draw better conclusions and reach the possible causes behind such variation.
调查夏季急性阑尾炎的发病率是否增加，以及复杂病例在夏季是否更多见。
对2018年收治的697例阑尾炎患者进行单中心横断面回顾性研究。纳入标准：所有年龄接受阑尾切除术的急性阑尾炎患者。排除标准：保守治疗。使用Microsoft Excel进行分析。计算Pearson相关系数以评估阑尾炎月发病率与当月平均温度之间的相关性。
排除51例接受保守治疗的患者。因此，纳入646例患者。年龄范围为3至77岁。男性占大多数（500例，77.4%）。坏疽性、穿孔性和化脓性阑尾被视为复杂阑尾炎。夏季收治的病例数最多（234例），占病例总数的36.2%。复杂病例为65例，其中23例（35.4%）在夏季收治，30例（46.2%）在冬季收治。病例数最多的月份是7月（68例），最少的月份是2月（40例）。这分别对应最高记录的平均温度（36.2°C）和第二低的平均温度（19.8°C）。注意到阑尾炎月发病率与平均温度之间存在中度正相关（Pearson相关系数R为0.5183）。
夏季阑尾炎病例较多。月发病率与温度呈正相关。需要数年的更多数据才能得出更好的结论并找出这种变化背后的可能原因。
