Diminished abdominal wall compliance |
Prone positioning, head of bed > 30° |
High body mass index, central obesity |
Acute respiratory failure, especially with elevated intrathoracic pressure |
Edema due to excess fluid administered during resuscitation |
Increased intra-luminal contents |
Gastroparesis |
Ileus |
Colonic pseudo-obstruction |
Increased abdominal contents |
Ascites (due to causes such as acute fluid collections, liver dysfunction) |
Capillary leak / fluid resuscitation (overload) |
Acidosis (pH < 7.2) |
Hypotension |
Hypothermia (core temperature < 33 °C) |
Coagulopathy (platelets < 55000/mm3 or prothrombin time > 15 s or partial thromboplastin time > 2 times normal or international standardised ratio > 1.5) |
Massive fluid resuscitation (> 5 L/d) |
Oliguria |
Sepsis |