The retroperitoneum in the abdomen is the space between the posterior parietal peritoneum anteriorly and the transversalis fascia posteriorly.
However, when present in subcutaneous tissues, cervical, mediastinal, retroperitoneal, extraperitoneal abdomen and pelvis spaces, involving muscular fibres or interstitial tissues, it is abnormal, indicating a "pathological process", and represents a challenge to search for the underlying aetiology.
Three 'IMO levels' divide the abdomen into three spaces: lower (level 1), middle (level 2) and upper (level 3) abdomen (Table 2).
Abdominal subcutaneous and visceral fat were quantified by computed tomography in a tomographic abdomen slice at the L4-L5 inter vertebral space.
As the transpulmonary pressure at FRC was ≈5 cmH2O, PEEP steps 5-9-5, 5-17-5, and 5-17-5 cmH2O were performed in the isolated lung, corresponding to 0-4-0, 0-12-0 and 0-12-0 cmH2O with connected pleural space and abdomen.
In PSF, the patient was positioned prone on padded chest rolls, rolled blanket bolster, or a Wilson spinal frame to provide adequate cushioning for the chest and abdomen while allowing vacant space preventing abdominal pressure.
Staging Computed Tomography (CT) examination of the abdomen, demonstrated a cystic space occupying lesion in the right iliac fossa.
Indeed, very narrow waist limits the space for abdomen organs and muscles, thus impairing their function (Riordan, 2007), while very broad hips are costly to develop and impair locomotion (Low et al., 1987).
Patients with severe sepsis display elevated circulating HMGB1 levels [ 15- 17] and HMGB1 is predominantly released at the site of infection; patients with pneumonia and those with peritonitis showed increased concentrations in fluid obtained from the bronchoalveolar space and abdomen, respectively [ 17].
We used exponential curve fitting because the space in the abdomen that contains the ovarioles increases exponentially rather than linearly with the length of abdomen.
