Nonvolitional assessment of tibialis anterior force and architecture during critical illness

Connolly, Bronwen; Maddocks, Matthew; MacBean, Victoria; Bernal, William; Hart, Nicholas; Hopkins, Philip; Rafferty, Gerrard F.

doi:10.1002/mus.26049

Cited by 27 publications

(29 citation statements)

References 42 publications

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“…22 Four studies reported foot positioning; toes facing the roof. 8,19,36 Neutral rotation/positioning of the lower limbs was reported by five authors 12,15,23,33,37 and external rotation of the lower limb by one. 32…”

Section: Patient Population and Study Designmentioning

confidence: 96%

“…17,21,22,[27][28][29][30][31] Mueller et al and Turton et al referenced the head of bed at a 30 and 45 elevation, respectively, 16,32 while one paper reported a 30 -45 head of bed elevation, 19 and another referenced semi-supine positioning. 33 The term 'limb extension' was reported by 21 studies. 5,8,[12][13][14][15][16]19,[23][24][25][26][33][34][35][36][37][38][39][40][41] One paper referenced 'legs flat' and was not included as referencing extension.…”

Section: Patient Population and Study Designmentioning

confidence: 99%

“…Elimination of distortion was referred to in six studies; five stated the use of excess gel, 14,25,28,34,36 while the remaining study referenced gentle contraction, relaxation techniques and passive mobilisation to help visualise structures. 33 US probe positioning was largely uniform with perpendicular positioning being the most predominant ( Table 3). The plane of acquisition was not referenced in 19 studies.…”

Section: Taking Measuresmentioning

confidence: 99%

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Ultrasonography to measure quadriceps muscle in critically ill patients: A literature review of reported methodologies

Weinel

Summers

Chapple

2019

Anaesth Intensive Care

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Muscle wasting in the intensive care unit (ICU) is common and may impair functional recovery. Ultrasonography (US) presents a modern solution to quantify skeletal muscle size and monitor muscle wasting. However, no standardised methodology for the conduct of ultrasound-derived quadriceps muscle layer thickness or cross-sectional area in this population exists. The aim of this study was to compare methodologies reported for the measurement of quadriceps muscle layer thickness (MLT) and cross-sectional area (CSA) using US in critically ill patients. Databases PubMed, Ovid, Embase, and CINAHL were searched for original research publications that reported US-derived quadriceps MLT and/or CSA conducted in critically ill adult patients. Data were extracted from eligible studies on parameters relating to US measurement including anatomical location, patient positioning, operator technique and image analysis. It was identified that there was a clear lack of reported detail and substantial differences in the reported methodology used for all parameters. A standardised protocol and minimum reporting standards for US-derived measurement of quadriceps muscle size in ICU is required to allow for consistent measurement techniques and hence interpretation of results.

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Section: Patient Population and Study Designmentioning

confidence: 96%

Section: Patient Population and Study Designmentioning

confidence: 99%

Section: Taking Measuresmentioning

confidence: 99%

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Ultrasonography to measure quadriceps muscle in critically ill patients: A literature review of reported methodologies

Weinel

Summers

Chapple

2019

Anaesth Intensive Care

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“…This is 371 perhaps unsurprising given the complex relationship between nutritional status and 372 muscle mass, muscle quality, muscle strength and physical function that is non-373 linear. Indeed, an improvement in muscle quantity may not translate to a proportional 374 improvement in volitional, or non-volitional, force production (46), and in turn a 375 commensurate change in performance of physical function, which additionally requires coordination of cognitive and executive function. Furthermore, establishing 377 a true baseline of physical functional status is challenging in the absence of robust 378 markers to determine pre-morbid ability.…”

Section: Publication Bias 341mentioning

confidence: 99%

β-Hydroxy-β-methylbutyrate and its impact on skeletal muscle mass and physical function in clinical practice: a systematic review and meta-analysis

Bear

Langan²,

Dimidi

et al. 2019

The American Journal of Clinical Nutrition

Self Cite

109

115

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Background Loss of skeletal muscle mass and muscle weakness are common in a variety of clinical conditions with both wasting and weakness associated with an impairment of physical function. β-Hydroxy-β-methylbutyrate (HMB) is a nutrition supplement that has been shown to favorably influence muscle protein turnover and thus potentially plays a role in ameliorating skeletal muscle wasting and weakness. Objectives The aim of this study was to investigate the efficacy of HMB alone, or supplements containing HMB, on skeletal muscle mass and physical function in a variety of clinical conditions characterized by loss of skeletal muscle mass and weakness. Methods A systematic review and meta-analysis of randomized controlled trials reporting outcomes of muscle mass, strength, and physical function was performed. Two reviewers independently performed screening, data extraction, and risk-of-bias assessment. Outcome data were synthesized through meta-analysis with the use of a random-effects model and data presented as standardized mean differences (SMDs). Results Fifteen randomized controlled trials were included, involving 2137 patients. Meta-analysis revealed some evidence to support the effect of HMB alone, or supplements containing HMB, on increasing skeletal muscle mass (SMD = 0.25; 95% CI: –0.00, 0.50; z = 1.93; P = 0.05; I2 = 58%) and strong evidence to support improving muscle strength (SMD = 0.31; 95% CI: 0.12, 0.50; z = 3.25; P = 0.001; I2 = 0%). Effect sizes were small. No effect on bodyweight (SMD = 0.16; 95% CI: –0.08, 0.41; z = 1.34; P = 0.18; I2 = 67%) or any other outcome was found. No study was considered to have low risk of bias in all categories. Conclusion HMB, and supplements containing HMB, increased muscle mass and strength in a variety of clinical conditions, although the effect size was small. Given the bias associated with many of the included studies, further high-quality studies should be undertaken to enable interpretation and translation into clinical practice. The trial was registered on PROSPERO as CRD42017058517.

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“…markers of inflammation versus days since admission). This is particularly pertinent when considering trials of nutrition and exercise where the biological interaction between these interventions may be uncoupled early in critical illness [19], and are likely to only be effective once this is recoupled [20]. Work has begun within the epoch between ICU discharge and hospital discharge, an area with little data and where interventions are far more likely to be effective as the confounders of inflammation, hypoxia and multi-organ failure have subsided [21,22].…”

Section: Signal-to-noise Ratiosmentioning

confidence: 99%

Emerging outcome measures for nutrition trials in the critically ill

Bear¹,

Griffith

Puthucheary

2018

Current Opinion in Clinical Nutrition &Amp; Metabolic Care

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Nonvolitional assessment of tibialis anterior force and architecture during critical illness

Cited by 27 publications

References 42 publications

Ultrasonography to measure quadriceps muscle in critically ill patients: A literature review of reported methodologies

Ultrasonography to measure quadriceps muscle in critically ill patients: A literature review of reported methodologies

β-Hydroxy-β-methylbutyrate and its impact on skeletal muscle mass and physical function in clinical practice: a systematic review and meta-analysis

Emerging outcome measures for nutrition trials in the critically ill

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