Gastric ultrasound is emerging as a tool that can be used to assess gastric content and volume in patients with an unknown fasting history. This information can impact the choice of anesthetic technique or the timing of surgery due to the presumed risk of aspiration. Currently, no data are available regarding the use of gastric ultrasound for patients who have had prior gastric operations, despite the increasing number of patients undergoing bariatric surgery. Our experience suggests that a patient with a prior Roux-en-Y gastric bypass may present with altered anatomy, rendering gastric ultrasound an ineffective technique to assess the volume of ingested food or liquid.
From the Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida.
Accepted for publication May 11, 2018.
Funding: Lambda Rho Chapter-at-Large of Sigma Theta Tau International (Honor Society of Nursing at Jacksonville University) 2016 Research Awards covered the expenses for the ingested liquids and food.
The authors declare no conflicts of interest.
Portions of this paper were presented as a poster at the annual meeting of the International Anesthesia Research Society (IARS), Washington, DC, May 6–9, 2017.
Address correspondence to Sher-Lu Pai, MD, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, 4500 San Pablo Rd, Jacksonville, FL 32224. Address e-mail to firstname.lastname@example.org.