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Table 5 A chronological summary of included studies

From: Early mobilisation in mechanically ventilated patients: a systematic integrative review of definitions and activities

Author

(publication year)

Country

Study design*

Setting

Study aim(s)

Total sample size (n)

Theme**

1

2

3

4

Martin et al. (2005) [74]

USA

Cohort

Post ICU

To evaluate the prevalence and magnitude of weakness in patients receiving chronic mechanical ventilation and the impact of providing aggressive whole-body rehabilitation on conventional weaning variables, muscle strength, and overall functional status.

49

 

✓

✓

✓

Chiang et al. (2006) [73]

Taiwan

RCT

Post ICU

To examine the effects of 6 weeks of physical training on the strength of respiratory and limb muscles, on ventilator-free time and on functional status in patients requiring prolonged mechanical ventilation.

32

 

✓

✓

 

Bailey et al. (2007) [24]

USA

Cohort

Respiratory ICU

To determine whether early physical activity is feasible and safe in respiratory failure patients.

103

✓

✓

✓

✓

Bahadur et al. (2008) [51]

United Kingdom

Cohort

General ICU

To define the number of occasions of sitting out of bed in patients in the ICU following tracheostomy formation.

30

✓

✓

✓

✓

Morris et al. (2008) [104]

USA

Cohort

Medical ICU

To assess the frequency of physical therapy, site of initiation of physical therapy and patient outcomes comparing respiratory failure patients who received usual care compared with patients who received physical therapy from a Mobility Team using the mobility protocol.

330

 

✓

✓

✓

Skinner et al. (2008) [107]

Australia

Cohort

General ICUs

To identify methods of exercise prescription by physiotherapists across Australian ICUs, including the most commonly used activities for both mechanically ventilated and spontaneously breathing patients; and to determine the outcome measures used for the evaluation of exercise intervention.

111

 

✓

✓

✓

Thomsen et al. (2008) [38]

USA

Cohort

Respiratory ICU

To determine whether transfer of respiratory failure patients to the respiratory ICU improved ambulation, independent of the underlying pathophysiology.

104

✓

✓

✓

✓

Malkoç et al. (2009) [105]

Turkey

Case control

Medical ICU

To evaluate the effect of physiotherapy on ventilator dependency and lengths of ICU stay.

510

 

✓

✓

 

Schweickert et al. (2009) [25]

USA

RCT

Medical ICU

To assess the efficacy of combining daily interruption of sedation with physical and occupational therapy on functional outcomes in patients receiving mechanical ventilation in intensive care.

104

 

✓

✓

✓

Bourdin et al. (2010) [64]

France

Cohort

Medical ICU

To describe the experience in early rehabilitation of ICU patients undergoing mechanical ventilation and its effects on physiologic outcomes.

20

 

✓

✓

✓

Needham et al. (2010) [103]

USA

Case control

Medical ICU

To evaluate the effect of the quality improvement project on the number of physical and occupational therapy consultations/treatments and length of stay, in comparison with the prior year.

57

 

✓

✓

✓

Pohlman et al. (2010) [26]

USA

Cohort

Medical ICU

To describe a protocol of a daily sedative interruption and early physical and occupational therapy, including neurocognitive state, potential barriers and adverse events related to this intervention.

49

 

✓

✓

✓

Yang et al. (2010) [79]

Taiwan

Cohort

Post ICU

To understand the characteristics of ventilator dependence in patients and the potential effects of physical therapy on ventilator weaning and patients’ functional status.

126

 

✓

✓

✓

Zanni et al. (2010) [86]

USA

Cohort

Medical ICU

To describe the frequency, physiologic effects, safety and patient outcomes associated with traditional rehabilitation therapy.

32

 

✓

✓

 

Chen et al. (2011) [72]

Taiwan

RCT

Post ICU

To study the outcomes of functional status, survival rate and ventilator-free status for prolonged mechanical ventilation patients 1 year after physical therapy training enrolment.

34

 

✓

✓

✓

Clini et al. (2011) [75]

Italy

Cohort

Respiratory ICU

To assess changes in functional status and whether the degree of functional recovery after a comprehensive rehabilitation program influenced hospital outcomes in a population of tracheostomised and chronically ventilated patients admitted for weaning.

77

 

✓

✓

✓

Nordon-Craft et al. (2011) [97]

USA

Case series

N/A

To describe safety and feasibility of participation in physical therapy intervention for individuals with ICU-acquired weakness who required MV for at least 7 days and characterise the examination and intervention procedures with sufficient detail that clinicians can implement a similar strategy.

19

 

✓

✓

✓

Chen et al. (2012) [96]

Taiwan

RCT

Post ICU

To evaluate the effects of an exercise training program on pulmonary mechanics, physical functional status and hospitalisation outcomes in terms of respiratory care centre stay, mechanical ventilator weaning rate and mortality rate in patients requiring prolonged mechanical ventilation.

27

  

✓

 

Dantas et al. (2012) [46]

Brazil

RCT

General ICU

To evaluate the effects of an early mobilisation protocol on respiratory and peripheral muscles.

59

✓

✓

✓

✓

Ronnebaum et al. (2012) [102]

USA

Case control

General ICU

To compare the effectiveness of two protocols: mobility protocol (MP) and Standard Physical Therapy (SPT) for patients with respiratory failure.

28

 

✓

✓

✓

Winkelman et al. (2012) [49]

USA

Case control

Medical-Surgical ICUs

To compare standard care versus an early mobility protocol and to examine the effects of exercise on vital signs and inflammatory biomarkers and the effects of the nurse-initiated mobility protocol on outcomes.

75

✓

✓

✓

✓

Berney et al. (2013) [57]

Australia and New Zealand

Cohort

General ICUs

To document current physiotherapy mobilisation practices and focus specifically on mobilisation practices in patients requiring prolonged mechanical ventilation, defined as more than 48 h.

498

✓

✓

  

Camargo Pires-Neto et al. (2013) [92]

Brazil

Case Series

Medical ICU

To evaluate the hemodynamic, respiratory and metabolic effects of a cycling exercise performed during the first 72 h of mechanical ventilation.

19

 

✓

✓

✓

Davis et al. (2013) [36]

USA

Cohort

Medical-Surgical ICU

To determine the feasibility of employing a standard early mobilisation protocol, while systematically collecting patient mobility data and short-term functional outcomes from critically ill, mechanically ventilated, older adults.

15

✓

✓

✓

✓

Dinglas et al. (2013) [60]

USA

Cohort

General ICUs

To evaluate the association of patient, ICU and hospital factors with the time to first occupational therapy intervention in the ICU in a prospective cohort of mechanically ventilated patients with acute lung injury.

514

✓

 

✓

✓

Harrold (2013) [35]

Australia

Case control

General ICU

To implement a system change that supported safe increases in mobilisation rates of all intensive care patients who were mechanically ventilated for three or more calendar days.

412

✓

✓

✓

✓

Li et al. (2013) [59]

China

Systematic review

N/A

To investigate the effectiveness and safety of active mobilisation on improving physical function and hospital outcomes in patients undergoing mechanical ventilation for more than 24 h.

17

✓

✓

✓

✓

Mendez-Tellez et al. (2013) [106]

USA

Cohort

General ICUs

To evaluate the association of patient, ICU and hospital factors with the time to starting physical therapy in a prospective cohort of mechanically ventilated patients with acute lung injury.

503

 

✓

✓

✓

Williams and Flynn, (2013) [99]

United Kingdom

Qualitative

N/A

To explore the physiotherapists understanding and experience of implementing early rehabilitation in critically ill patients.

6

 

✓

  

Dinglas et al. (2014) [58]

USA

Case control

Medical ICU

To evaluate the sustained effect of a quality improvement project on the timing of initiation of active physical therapy intervention in patients with acute lung injury.

243

✓

✓

✓

✓

Dong et al. (2014) [67]

China

RCT

General ICU

To investigate the feasibility of early rehabilitation therapy in patients with mechanical ventilation.

60

 

✓

✓

✓

Jolley et al. (2014) [43]

USA

Cohort

Medical ICU

To assess clinician knowledge regarding early mobilisation and identify barriers to its provision.

120

✓

✓

  

Nydahl et al. (2014) [65]

Germany

Cohort

General ICUs

To undertake a 1-day point-prevalence study of mobilisation of mechanically ventilated patients in ICUs across Germany, including evaluating associations with perceived barriers to mobilisation and complications during mobilisation.

116

 

✓

✓

 

Patel et al. (2014) [45]

USA

Cohort

Medical ICU

To determine if early mobilisation affects glycaemic control and, in turn, exogenous insulin requirements in critical illness.

104

✓

✓

  

Bakhru et al. (2015) [41]

USA

Cohort

General ICUs

To evaluate the current level of diffusion of early mobilisation practice and examine environmental factors that may influence its practice.

500

✓

 

✓

✓

Barber et al. (2015) [88]

Australia

Qualitative

General ICU

To determine the barriers and facilitators of early mobilisation in the ICU.

25

 

✓

  

Berney et al. (2015) [76]

Australia

Cohort

General ICU

To measure patterns of physical activity in a group of critically ill patients.

41

 

✓

✓

✓

Collings and Cusack (2015) [85]

United Kingdom

RCT

General ICU

To quantify and compare the acute physiological response of critically ill patients during a passive chair transfer or a sitting on the edge of the bed.

10

 

✓

✓

✓

Eakin et al. (2015) [116]

USA

Qualitative

Medical ICU

To describe a multidisciplinary team perspective regarding how to implement and sustain a successful early rehabilitation programme.

20

 

✓

  

Harrold et al. (2015) [52]

Australia and United Kingdom

Cohort

General ICUs

To evaluate baseline practise and the perceived barriers to early mobilisation in ICU across multiple sites in two different countries with different systems of health care delivery.

830

✓

✓

 

✓

Holdsworth et al. (2015) [61]

Australia

Qualitative

General ICU

To elicit attitudinal, normative, and control beliefs towards mobilising ventilated patients in the ICU to generate items for a second-phase questionnaire and inform the development of a tailored implementation intervention.

22

✓

✓

✓

✓

Jolley et al. (2015) [100]

USA

Cohort

General ICUs

To determine what proportion of hospitals caring for mechanically ventilated patients across Washington State use physical activity in the ICU and to identify process of care factors associated with reported activity delivery.

47

 

✓

✓

✓

Kayambu et al. (2015) [95]

Australia

RCT

General ICU

To determine whether early physical rehabilitation improves physical function and associated outcomes in patients with sepsis.

50

 

✓

✓

✓

McWilliams et al. (2015) [66]

United Kingdom

Case control

General ICU

To evaluate the impact of an early and enhanced rehabilitation programme for mechanically ventilated patients in a large tertiary referral mixed-population ICU.

582

 

✓

✓

✓

Ota et al. (2015) [47]

Japan

Case control

General ICU

To clarify the benefits of early mobilisation for mechanically ventilated patients for their survival to discharge to home from the hospital.

108

✓

✓

✓

✓

Camargo Pires-Neto et al. (2015) [68]

Brazil

Cohort

Medical ICU

To characterise the provision of early mobilisation therapy in critically ill patients in a Brazilian medical ICU and to investigate the relationship between physical activity level and clinical outcomes.

120

 

✓

✓

✓

Skinner et al. (2015) [69]

Australia

Cohort

General ICU

To report the incidence of usual care physiotherapy, specifically treatment and modalities used, in a sample of subjects admitted to a single tertiary Australian ICU.

100

 

✓

✓

✓

The TEAM Study Investigators (2015) [48]

Australia and New Zealand

Cohort

General ICUs

To investigate current mobilisation practice, strength at ICU discharge and functional recovery at 6 months among mechanically ventilated patients.

192

✓

✓

✓

✓

Toccolini et al. (2015) [70]

Brazil

Cohort

General ICU

To assess the effects of passive orthostatism on various clinicophysiologic parameters of adult ICU patients, by daily placement on a tilt table.

23

 

✓

 

✓

Witcher et al. (2015) [71]

USA

Case control

Neurological ICU

To examine the effect of an early mobilisation protocol on sedation practices of critically ill, mechanically ventilated patients.

68

 

✓

✓

✓

Bakhru et al. (2016) [56]

France, Germany, United Kingdom and USA

Cohort

General ICUs

To evaluate organisational characteristics that enable early mobilisation practice.

951

✓

✓

✓

 

Dong et al. (2016) [93]

China

RCT

General ICU

To evaluate the influence of early rehabilitation therapy on patients with more than 72 h of prolonged mechanical ventilation after coronary artery bypass surgery.

106

 

✓

✓

✓

Hickmann et al. (2016) [42]

Belgium

Cohort

General ICU

To demonstrate that early mobilisation performed within the first 24 h of ICU admission proves to be feasible and well tolerated in the vast majority of clinically ill patients.

171

✓

✓

✓

✓

Hodgson et al. (2016) [37]

Australia and New Zealand

RCT

General ICUs

To determine if the early goal-directed mobilisation intervention could be delivered to patients receiving mechanical ventilation with increased maximal levels of activity compared with standard care.

50

✓

✓

✓

✓

Morris et al. (2016) [84]

USA

RCT

Medical ICU

To compare standardised rehabilitation therapy to usual ICU care in acute respiratory failure

300

 

✓

✓

✓

Schaller et al. (2016) [101]

Austria, Germany and USA

RCT

Surgical ICUs

To test if early, goal-directed mobilisation, using a strict mobilisation algorithm combined with facilitated inter-professional communication leads to improved mobility during admission, decreased length of stay, and increased functional independence at hospital discharge.

200

 

✓

✓

✓

Curtis and Irwin (2017) [50]

United Kingdom

Qualitative

N/A

To increase understanding of nurses’ perspectives on ambulating mechanically ventilated patients, and to determine why this is not a routine part of ICU patient care.

8

✓

 

✓

✓

Dunn et al. (2017) [62]

USA

Systematic review

N/A

To evaluate the strength of existing publications to determine if active mobilisation interventions in prolonged mechanical ventilation patients improves physical function, ventilator weaning rates, pulmonary mechanics, and clinical hospital outcomes such as length of stay and mortality.

8

✓

   

Jolley et al. (2017) [77]

USA

Cohort

General ICU

To determine the prevalence and character of mobility for ICU patients with acute respiratory failure.

42

 

✓

✓

✓

Lai et al. (2017) [87]

Taiwan

Case control

Medical ICU

To evaluate the effects of a quality improvement programme to introduce early mobilisation on the outcomes of patients with mechanical ventilation in the ICU.

153

 

✓

✓

✓

McWilliams et al. (2017) [39]

United Kingdom

Case control

General ICUs

To investigate whether the Sara Combilizer® could facilitate safe and early mobilisation of critically ill patients at high risk of ICU-acquired weakness who would otherwise be unable to get out of bed, thereby reducing time to first mobilisation.

63

✓

✓

✓

✓

Parry et al. (2017) [98]

Australia

Qualitative

General ICU

To identify the barriers and enablers that influence clinicians’ implementation of early rehabilitation in critical care.

26

 

✓

✓

✓

Sibilla et al. (2017) [78]

Switzerland

Cohort

General ICUs

To characterise the highest level of mobilisation achieved in mechanically ventilated patients as defined by the valid and reliable ICU Mobility Scale and to characterise the potential safety events related to mobilisation and perceived barriers to mobilisation.

161

 

✓

✓

✓

Weeks et al. (2017) [44]

USA

Cohort

Medical-Surgical ICU

To investigate the feasibility of early mobilisation and describe the rehabilitation interventions and functional discharge outcomes in critically ill patients with cancer.

42

✓

✓

✓

✓

de Queiroz et al. (2018) [63]

Brazil

Systematic review

N/A

To evaluate of the description of the active mobilisation protocols in patients on invasive mechanical ventilation at ICUs.

17

✓

✓

 

✓

Goddard et al. (2018) [81]

Canada and USA

Qualitative

N/A

To explore barriers and facilitators to early rehabilitation for critically ill patients receiving invasive mechanical ventilation.

40

 

✓

  

Liu et al. (2018) [83]

Japan

Cohort

General ICU

To investigate the safety of early mobilisation according to the Maebashi Early Mobilisation protocol conducted by ICU physicians.

72

 

✓

✓

✓

McWilliams et al. (2018) [40]

United Kingdom

RCT

N/A

To explore the feasibility of earlier and enhanced rehabilitation for patients mechanically ventilated for ≥5 days and to assess the impact on possible long-term outcome measures for use in a definitive trial.

102

✓

✓

✓

✓

Medrinal et al. (2018) [90]

France

RCT

N/A

To compare the physiological effects of four common types of bed exercise in intubated, sedated patients confined to bed in the ICU, in order to determine which was the most intensive.

19

 

✓

✓

✓

Phelan et al. (2018) [55]

Australia

Systematic review

N/A

To identify the key factors that underpin successful implementation and sustainability of early mobilisation in adult intensive care units.

13

✓

 

✓

✓

Ringdal et al. (2018) [91]

Sweden

Qualitative

General ICUs

To explore patient recollections and experiences of early mobilisation, including in-bed cycling.

11

 

✓

✓

✓

Sarfati et al. (2018) [80]

France

RCT

Surgical ICU

To investigate whether cardiothoracic surgery patients expected to require prolonged ICU management benefited from the addition of daily tilting to an early mobilisation program.

125

 

✓

✓

✓

Taito et al. (2018) [54]

Japan

Cohort

General ICUs

To clarify intensive care unit-level factors facilitating out-of-bed mobilisation in mechanically ventilated patients with orotracheal tubes.

168

 

✓

✓

✓

Verceles et al. (2018) [53]

USA

RCT

Post ICU

To compare the effects of adding a progressive multimodal rehabilitation program to usual care.

32

✓

✓

✓

✓

Winkelman et al. (2018) [94]

USA

RCT

General ICUs

To examine whether the delivered intervention influenced inflammatory serum markers and to explore whether the dose of the delivered intervention influenced patient outcomes.

54

 

✓

✓

✓

Wright et al. (2018) [82]

United Kingdom

RCT

Medical-surgical ICU

To evaluate the effects of two different intensities of early rehabilitation therapy - intensive versus standard - on the recovery of physical health-related quality of life at 6 months.

308

 

✓

✓

✓

  1. *Based on CASP tools
  2. **1 non-standardised definition, 2 contextual factors, 3 negotiated process, 4 collaboration between patients and staff
  3. Abbreviations: CASP Critical Appraisal Skills Programme, ICU intensive care unit, MP mobility protocol, N/A not applicable (unclear or systematic reviews), SPT standard physical therapy, RCT randomised controlled trial