RT Book, Section A1 Bohnen, J.M.A. A1 Mustard, R.A. A1 Schouten, B.D. A2 Hall, Jesse B. A2 Schmidt, Gregory A. A2 Wood, Lawrence D.H. SR Print(0) ID 2297141 T1 Chapter 89. The Acute Abdomen and Intra-Abdominal Sepsis T2 Principles of Critical Care, 3e YR 2005 FD 2005 PB The McGraw-Hill Companies PP New York, NY SN 9780071416405 LK accessanesthesiology.mhmedical.com/content.aspx?aid=2297141 RD 2023/03/29 AB Patterns of presentation of the acute abdomen in the intensive care unit (ICU) may be unusual.Conjoint evaluation by intensivist, surgeon, and gastroenterologist is frequently needed.Prompt diagnosis is the key to successful management.Computed tomography (CT) or ultrasonography should be used liberally in the evaluation of intra-abdominal sepsis.Complications occur frequently in the postsurgical ICU patient; “stable vital signs" does not imply clinical stability.Postoperative residual or recurrent intra-abdominal sepsis may not be clinically obvious and may not be demonstrated by a CT scan; cardiorespiratory instability should prompt a high level of suspicion.The treatment of the febrile postsurgical patient is not simply the administration of further antibiotics.Acalculous cholecystitis is a treacherous disease which requires urgent treatment; definitive diagnosis is not always possible or necessary before treatment.