TY - CHAP M1 - Book, Section TI - Peptic Ulcer Perforation A1 - Doherty, Gerard M. PY - 2010 T2 - Quick Answers Surgery AB - • Acute onset of severe upper abdominal pain• Immediate chemical peritonitis from gastroduodenal secretions followed by bacterial peritonitis in 12-24 hours• Free air on abdominal x-ray SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/29 UR - accesssurgery.mhmedical.com/content.aspx?aid=58097247 ER -