Kredel M, Goepfert C, Bassi D, Roewer N, Apfel C C
Department of Anaesthesiology, Julius-Maximilians-University of Wuerzburg, Wuerzburg, Germany.
Acta Anaesthesiol Scand. 2006 Apr;50(4):488-94. doi: 10.1111/j.1399-6576.2006.00987.x.
Post-operative nausea and vomiting (PONV) is believed and previously reported to be influenced by the weather and the phase of the moon. We therefore determined the effects of specific and general weather patterns as well as the lunar phase on PONV in adults undergoing balanced inhalation anaesthesia.
The incidence of PONV was prospectively evaluated in 1801 patients undergoing elective surgical, urologic and head and neck procedures. Air temperature, barometric pressure, air water vapour pressure and the general weather situation were obtained from the National Weather Institute in Germany on the days of surgery. Corresponding categories of temperature, pressure, vapour pressure and their day-to-day changes, the general weather situation and the phase of the moon were used to group the patient data. The differences between the proportion of patients having PONV and the proportion predicted to have PONV according to their calculated risk were determined for each category. Further, bivariate and multivariate testing was applied.
Within 24 h after anaesthesia, PONV occurred in 555 of the patients (31%). There was no correlation between weather conditions and PONV occurrence or between the phase of the moon and PONV occurrence. Even when corrected for the patients' risk and other potentially confounding factors in multivariate logistic regression analysis, no statistically significant impact of the hypothesized factors could be detected.
These data suggest that neither the weather nor the phases of the moon have any clinically relevant effect on the incidence of PONV after general anaesthesia.
术后恶心呕吐（PONV）被认为且先前有报道称受天气和月相影响。因此，我们确定了特定和一般天气模式以及月相对接受平衡吸入麻醉的成年患者PONV的影响。
前瞻性评估了1801例接受择期手术、泌尿外科及头颈手术的患者的PONV发生率。手术当天从德国国家气象局获取气温、气压、水汽压及总体天气状况。根据温度、压力、水汽压的相应类别及其每日变化、总体天气状况和月相将患者数据分组。确定每组中发生PONV的患者比例与根据计算风险预测会发生PONV的患者比例之间的差异。此外，进行了双变量和多变量检验。
麻醉后24小时内，555例患者（31%）发生了PONV。天气状况与PONV发生之间或月相与PONV发生之间均无相关性。即使在多变量逻辑回归分析中对患者风险和其他潜在混杂因素进行校正后，也未检测到假设因素有统计学意义的影响。
这些数据表明，天气和月相对全身麻醉后PONV的发生率均无任何临床相关影响。
