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  • Title: Preoperative Administration of Olive Oil Reduces Chylothorax After Minimally Invasive Esophagectomy.
    Author: Du ZS, Li XY, Luo HS, Wu SX, Zheng CP, Li ZY, Fu JH.
    Journal: Ann Thorac Surg; 2019 May; 107(5):1540-1543. PubMed ID: 30508530.
    Abstract:
    BACKGROUND: Chylothorax after esophagectomy is uncommon but potentially fatal. We performed a retrospective study to assess the effect of olive oil administered orally before surgery on reducing chylothorax in patients who underwent minimal invasive esophagectomy. METHODS: Between May 2013 and December 2016, patients with esophageal squamous cell cancer who underwent minimal invasive esophagectomy were screened. Patients in the investigational group were preoperatively administered olive oil orally 8 hours before surgery, and patients in the control arm received no olive oil. We used a propensity score matching model to derive 1:1 cohorts. Statistical analysis was performed by using the t test or χ2 or Fisher's exact test. RESULTS: The propensity score matching model finally selected 384 of 425 patients, with 192 patients in each group. The patient characteristics were balanced. Oral olive oil was well tolerated. The thoracic duct identification rate was higher in the investigational group (100% versus 45.31%, χ2 = 141.78, p < 0.01). The investigational group was associated with a reduced incidence of ligation (7.81% versus 18.22%, χ2 = 8.03, p = 0.003). The incidence of chylothorax was significantly reduced in the investigational group compared with that of the control group (0% versus 3.12%, χ2 = 4.23, p = 0.03). CONCLUSIONS: Preoperative administration of olive oil is a simple and safe method to minimize chylothorax complicating minimal invasive esophagectomy.
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