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Table 2 Effect of PEEP on IAP in human studies

From: Positive end-expiratory pressure affects the value of intra-abdominal pressure in acute lung injury/acute respiratory distress syndrome patients: a pilot study

  Sussman and colleagues[8] Gattinoni and colleagues[7] Torquato and colleagues[9] Present study
Publication year 1991 1998 2009 2009
Patients (n) 15 21 30 30
IAP zero reference SP SP SP MA
IAP volume (ml) 50 100 60 50
PEEP baseline (cmH2O) 0 0 0 0
PEEP set (cmH2O) 15 15 10 12
ΔPEEP (cmH2O) 15 15 10 12
ΔPEEP (mmHg) 11 11 7.4 8.8
IAP at baseline (mmHg) 10.8 10.6 ± 6 8.7 ± 4.5 11.7 ± 4.5
IAP at PEEP (mmHg) 11.7 11.8 ± 6.3 12.3 ± 9.6 15.2 ± 5.8
ΔIAP (mmHg) 0.9 1.4 ± 1.3 3.6 ± 2.6 3.5 ± 1.7
  1. Continuous data are reported as mean ± standard deviation.
  2. ΔPEEP = difference between the two extreme PEEP levels.
  3. ΔIAP = IAP recorded at PEEP minus IAP at baseline.
  4. IAP, intra-abdominal pressure; MA, midaxillary line; PEEP, positive end-expiratory pressure; SP, symphysis pubis.