title: An Effort to Develop an Algorithm to Target Abdominal CT Scans for Patients After Gastric Bypass.
abstract: Abdominal CT (abdCT) scans are frequently ordered for Roux-en-Y gastric bypass (RYGB) patients presenting to the emergency department (ED) with abdominal pain, but often do not reveal intra-abdominal pathology. We aimed to develop an algorithm for rational ordering of abdCTs. We retrospectively reviewed our institution's RYGB patients presenting acutely with abdominal pain, documenting clinical and laboratory data, and scan results. Associations of clinical parameters to abdCT results were examined for outcome predictors. Of 1643 RYGB patients who had surgery between 2005 and 2015, 355 underwent 387 abdCT scans. Based on abdCT, 48 (12 %) patients required surgery and 86 (22 %) another intervention. No clinical or laboratory parameter predicted imaging results. Imaging decisions for RYGB patients do not appear to be amenable to a simple algorithm, and patient work-up should be based on astute clinical judgment.
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: Luise I M
authors: LI
authors: Pernar
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: Ryan
authors: R
authors: Lockridge
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: Colleen
authors: C
authors: McCormack
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: Judy
authors: J
authors: Chen
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: Scott A
authors: SA
authors: Shikora
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: David
authors: D
authors: Spector
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: Ali
authors: A
authors: Tavakkoli
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
authors: Ashley H
authors: AH
authors: Vernon
authors: Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. mkrobinson@partners.org.
authors: Malcolm K
authors: MK
authors: Robinson
mesh_terms: D015746:Abdominal Pain / Q000209:etiology*; D000465:Algorithms; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects*; D006801:Humans; D008297:Male; D009765:Obesity / Q000601:surgery*; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
keywords: Computed tomography; Emergency radiology; Gastric bypass