Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content ++ Projectile nonbilious emesis in an infant.Palpable "olive" on physical examination."String sign" on an upper gastrointestinal series.Pyloric muscle wall thickness ≥ 4 mm and pyloric channel length ≥ 16 mm on ultrasound examination. ++ Severe hypochloremic, hypokalemic metabolic alkalosis.Severe dehydration. ++ For both open and laparoscopic procedures, the infant should be supine on the operating table.Laparoscopic procedure. The infant is positioned supine at the end of the operating table with appropriate padding.The lower extremities are secured to the operating table in a frog leg position. ++ Maintenance intravenous fluids are given until the infant is able to tolerate oral feedings.Nothing by mouth for 6 hours followed by feeding every 3 hours: For the first feeding, give 30 mL of full-strength formula; for the second feeding, give 60 mL of formula, and then increase amount as tolerated.If the infant vomits, hold feeding and repeat the last tolerated volume in 3 hours. ++ Mucosal perforation.Incomplete myotomy.Wound infection. Your MyAccess profile is currently affiliated with '[InstitutionA]' and is in the process of switching affiliations to '[InstitutionB]'. Please click ‘Continue’ to continue the affiliation switch, otherwise click ‘Cancel’ to cancel signing in. Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth