Data Collection
hiatal hernia, hernia
GERD, COMPLICATIONS
Preoperative data, such as patient’s demographics, BMI, the time between the primary and revision procedures, associated medical problems, EGD and imaging findings, sleeve volume assessed by MDCT virtual gastroscopy, and laboratory investigations were collected.Perioperative data included operation time and combined operative procedures, such as hiatal hernia repair and cholecystectomy.Postoperative data included early and late complications, nutritional laboratory results, EGD for diagnosing GERD de novo or hiatal hernia, result changes in BMI, %EWL, %TWL, and improvement of associated medical problems at one and two-year follow-ups after revision surgery.