Zangbar Bardiya, Rhee Peter, Pandit Viraj, Hsu Chiu-Hsieh, Khalil Mazhar, Okeefe Terence, Neumayer Leigh, Joseph Bellal
Division of Trauma, Department of Surgery, University of Arizona, Tucson, AZ.
Ann Surg. 2016 Jan;263(1):76-81. doi: 10.1097/SLA.0000000000001238.
The aim of this study was to assess the seasonal variation in emergency general surgery (EGS) admissions.
Seasonal variation in medical conditions is well established; however, its impact on EGS cases remains unclear.
The National Inpatient Sample (NIS) database was queried over an 8-year period (2004-2011) for all patients with diagnosis of acute appendicitis, acute cholecystitis, and diverticulitis. Elective admissions were excluded. The following data for each admission were recorded: age, sex, race, admission month, major operative procedure, hospital region, and mortality. Seasons were defined as follows: Spring (March, April, May), Summer (June, July, August), Fall (September, October, November), and Winter (December, January, February). X11 procedure and spectral analysis were performed to confirm seasonal variation.
A total of 63,911,033 admission records were evaluated of which 493,569 were appendicitis, 395,838 were cholecystitis, and 412,163 were diverticulitis. Seasonal variation is confirmed in EGS (F = 159.12, P < 0.0001) admissions. In the subanalysis, seasonal variation was found in acute appendicitis (F = 119.62, P < 0.0001), acute cholecystitis (F = 37.13, P < 0.0001), and diverticulitis (F = 69.90, P < 0.0001). The average monthly EGS admission in Winter was 11,322 ± 674. The average monthly EGS admission in Summer was higher than that of Winter by 13.6% (n = 1542; 95% CI: 1180-1904, P < 0.001).
Hospitalization due to EGS adheres to a consistent cyclical pattern, with more admissions occurring during the Summer months. Although the reasons for this variability are unknown, this information may be useful for hospital resource reallocation and staffing.
本研究旨在评估急诊普通外科（EGS）住院人数的季节性变化。
疾病的季节性变化已得到充分证实；然而，其对EGS病例的影响仍不明确。
查询国家住院样本（NIS）数据库8年期间（2004 - 2011年）所有诊断为急性阑尾炎、急性胆囊炎和憩室炎的患者。排除择期住院病例。记录每次住院的以下数据：年龄、性别、种族、住院月份、主要手术操作、医院地区和死亡率。季节定义如下：春季（3月、4月、5月）、夏季（6月、7月、8月）、秋季（9月、10月、11月）和冬季（12月、1月、2月）。进行X11程序和频谱分析以确认季节性变化。
共评估了63,911,033条住院记录，其中493,569例为阑尾炎，395,838例为胆囊炎，412,163例为憩室炎。EGS住院人数存在季节性变化（F = 159.12，P < 0.0001）。在亚分析中，急性阑尾炎（F = 119.62，P < 0.0001）、急性胆囊炎（F = 37.13，P < 0.0001）和憩室炎（F = 69.90，P < 0.0001）均存在季节性变化。冬季EGS平均每月住院人数为11,322 ± 674。夏季EGS平均每月住院人数比冬季高13.6%（n = 1542；95% CI：1180 - 1904，P < 0.001）。
EGS导致的住院遵循一致的周期性模式，夏季住院人数更多。尽管这种变化的原因尚不清楚，但该信息可能有助于医院资源重新分配和人员配置。
