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Table 1 Characteristics of studies included in systematic review

From: Risk factors for intra-abdominal hypertension and abdominal compartment syndrome among adult intensive care unit patients: a systematic review and meta-analysis

Study, Year

Patients (n)

Design

ICU type

Patient population

Mechanically ventilated, (%)

Reports risk factors for

Illness severitya

Balogh et al., 2003 [16]

188

Prospective cohort

Trauma

Trauma patients in shock

Not reported

ACS

ISS: 1° ACSb 29 (3)

2° ACSb: 28 (2)

Normal IAP: 27 (1)

Balogh et al., 2011 [17]

81

Prospective cohort

General

Trauma patients in shock

Not reported

IAH

ISS: 29 (1)

Dalfino et al., 2008 [9]

123

Prospective cohort

General

Mixed

Not reported

IAH

IAH, median (IQR): 24 (20–28)

Normal IAP, median (IQR): 21.5 (18–26)

De Keuleaner et al., 2011 [18]

149

Prospective cohort

General

Mixed mechanically ventilated

100

IAH and ACS

22 (10)

Davis et al., 2013 [22]

45

Retrospective cohort

General

Severe acute pancreatitis

62

ACS

20.3 (6.4)

Ke et al., 2012 [10]

58

Prospective cohort

Surgical

Severe acute pancreatitis

21

IAH

9 (range 8–11)

Kim et al., 2012 [19]

100

Prospective cohort

General

Mixed

81

IAH

19.4 (8.4)

Madigan et al., 2008 [20]

96

Case–control

Trauma

Extremity injury AIS score >3

66

ACS

ISS: ACS 25.6 (9.06)

Normal IAP: 21.4 (11.02)

Malbrain et al., 2004 [1]

97

Cross-sectional

General

Mixed

Not reported

IAH

SOFA: 6.5 (4)

Malbrain et al., 2005 [24]

265

Prospective cohort

General and specialized

Mixed

Not reported

IAH

17.4 (8.3)

McNelis et al., 2002 [21]

44

Case–control

Surgical

Surgical

100

ACS

ACS: 20.3 (6.5)

Non-ACS: 11.0 (3.2)

Neal et al., 2012 [23]

452

Prospective cohort

General

Blunt trauma

Not reported

ACS

ISS, median (IQR): 34 (25–43)

Reintam Blaser et al., 2011 [15]

563

Prospective cohort

General

Mixed mechanically ventilated

100

IAH

15.2 (7.4)

Vidal et al., 2008 [2]

83

Prospective cohort

Medical/surgical

Mixed

Not reported

IAH

19 (8)

  1. aAPACHE II mean (standard deviation) unless otherwise stated; bprimary ACS was defined as ACS associated with injury or disease in the abdominopelvic region, secondary ACS was defined as ACS not originating from the abdominopelvic region [14]. ACS, abdominal compartment syndrome; ISS, injury severity score; IAP, intra-abdominal pressure; IAH, intra-abdominal hypertension; IQR, interquartile range; SOFA, s equential organ failure assessment; AIS, abbreviated injury scale.