Gastroesophageal Reflux Disease and Hiatal Hernia After Laparoscopic Sleeve Gastrectomy: A Retrospective Cohort Study

Introduction: Laparoscopic sleeve gastrectomy (LSG) has shown good results in terms of weight loss and improvement of obesity-comorbidities, even though its effect on inducing new-onset gastroesophageal reflux disease (GERD) is still a matter of debate. This study aims to estimate the incidence of GERD and hiatal hernia post LSG and to identify associated risk factors of GERD development. Methods: This is a retrospective cohort study of all patients who underwent LSG surgery at the National Guard medical hospitals (Riyadh and Al-Ahsa) between January 2016 and February 2019. Patients who had undergone LSG, who had a history of GERD or hiatal hernia preoperatively, or who had intraoperative hiatal hernia repair were excluded. Mean, standard deviation, and independent t-test was used for numerical variables, while frequencies, percentages, and chi-square test were used for categorical variables. Results: There were 142 patients included in this study, with the mean age being 39,38 ± 12.68 years, and 64.8% of patients were female. Patients were followed up for 24 months. The incidence of GERD post-operation was 33.% (n=47) and hiatal hernia was 3.5% (n=5). Significantly associated risk factor for post-operative GERD were as follows: age (p=0.026), gender (p=0.038), and hypertension (p=0.014). Conclusion: Incidence of GERD was shown to be relatively high, while hiatal hernia was low; besides age, gender and hypertension, none of the other variables was associated with the development of GERD.