Prevalence of Asymptomatic Hiatal Hernia in Obese Patients During Preoperative Upper Gastrointestinal Endoscopy Assessments and Correlation With Body Mass Index

Introduction In obese patients, hiatal hernia (HH) can be asymptomatic or may present with one or few symptoms, such as heartburn, nausea, or vomiting. Routine upper gastrointestinal (GI) endoscopy is the most frequent method used to determine the presence of any abnormalities, including HH. This study aimed to assess the prevalence of asymptomatic HH in obese patients during routine upper GI endoscopy assessments and to examine the correlation with body mass index (BMI). Materials and methods This was an observational, retrospective cohort study conducted at King Fahad Specialist Hospital, Buraydah, Qassim, Saudi Arabia. The data were extracted from the medical records and electronic charts of all obese patients who underwent preoperative upper GI endoscopy assessment between January 2017 and December 2019. Data were tabulated in Microsoft Excel and analyzed using the Statistical Package for the Social Sciences (SPSS) Version 21 (IBM Corp., Armonk, NY, USA). Results Among the 690 obese patients, HH was found in 103 (14.9%) patients. The chi-square test revealed that abdominal pain (X(2)=3.885; p=0.049), shortness of breath (X(2)=8.057; p=0.005), vomiting (X(2)=4.302; p=0.038), nausea (X(2)=4.090; p=0.043), and other HH symptoms (X(2)=3.897, p=0.048) were the most frequently reported HH related symptoms, but BMI was not (X(2)=2.126; p=0.345). In the multivariate regression model, the use of PPI (proton-pump inhibitor) medication (adjusted OR [AOR]=0.237; 95% CI=0.074-0.760; p=0.023) was found to be higher in those with HH. Vomiting (AOR=1.722; 95% CI=1.025-2.890; p=0.040) and nausea (AOR=1.698; 95% CI=1.012-2.849; p=0.045) were the most frequently reported symptoms related to HH. Conclusion Asymptomatic HH among obese patients is not widely prevalent in our region. The use of PPI medications was found to decrease the symptoms associated with HH, such as vomiting and nausea. However, there was no evidence linking BMI to the development of HH.