<unk>  <unk>  occurs when the abdomen becomes subject to increased pressure reaching past the point of intra-abdominal hypertension (IAH).<unk>  is present when intra-abdominal pressure rises and is sustained at > 20 mmHg and there is new organ dysfunction or failure.<unk>  is classified into three groups: Primary, secondary and recurrent<unk> . It is not a disease and as such it occurs in conjunction with many disease processes, either due to the primary illness or in association with treatment interventions. Specific cause of<unk>  is not known, although some causes can be sepsis and severe<unk>  trauma. Increasing pressure reduces blood flow to<unk>  organs and impairs pulmonary, cardiovascular, renal, and gastro-intestinal (GI) function, causing obstructive shock, multiple organ dysfunction<unk>  and death.
Abdominal compartment syndrome
Postcholecystectomy syndrome
PELVIS syndrome
Tertiary peritonitis
Acute abdomen
Spontaneous bacterial peritonitis
Proteus syndrome
Superior mesenteric artery syndrome