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Volume 3 Supplement 1

ESICM LIVES 2015

Is the manchester mobility score a valid and reliable measure of physical function within the intensive care unit

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Introduction

Early and structured rehabilitation programmes have been shown to decrease both critical care and hospital length of stay (LOS) [1] as well as improve functional ability at the point of critical care discharge [2]. At present there is no general or universally accepted method for measuring mobility within the critical care unit or to track rehabilitation progress [3]. The Manchester Mobility Score was developed in 2005 as one such tool to describe the levels of mobility seen within critical care. Since development, the MMS has been used and adapted in several large critical care units within the UK, but has not previously been investigated in terms of validity and reliability

Objectives

Our aim was to test the validity and reliability of the Manchester Mobility Score (MMS) as a quick and simple tool for monitoring rehabilitation within critical care.

Methods

This prospective observational study was performed within a large 75 bed, UK based mixed dependency critical care unit. The study was divided into 2 stages: stage one was the inter-rater reliability testing of the MMS and stage 2 was to assess for correlation with another validated measure of function within critical care and explore any relationship with hospital length of stay post critical care discharge.

Results

Stage 1 - MMS were collected for 111 patients over a 2 day period. All participating physiotherapists and nursing staff reported that the MMS took less than 1 minute to complete and was easy to use. The inter-rater reliability was excellent with all 3 assessors assigning the same MMS score for every patient (Kappa value = 1).

Stage 2 - A total of 53 patients were included in the second stage analysis. The correlation between the MMS and the Barthel Index on critical care discharge was found to be strong (p < 0.001), with the MMS also showing negative association with hospital length of stay (p < 0.001).

Conclusions

In conclusion, the MMS is feasible, quick and reliable to complete with strong inter-rater reliability and correlation with the Barthel Index at critical discharge. It may also be useful in predicting post critical car length of stay in critical care survivors.

Figure 1
figure1

Correlation between MMS and Barthel scores.

Figure 2
figure2

Correlation between MMS and Length of stay.

References

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    McWilliams D, Weblin J, Atkins G, Bion J, Williams J, Elliott C, et al: Enhancing rehabilitation of mechanically ventilated patients in the intensive care unit: A quality improvement project. J Crit Care. 2015, 30 (1): 13-18. 10.1016/j.jcrc.2014.09.018.

  2. 2.

    Schweickert WD, Pohlman MC, Pohlman AS, Nigos C, Pawlik AJ, Esbrook CL, et al: Early physical and occupational therapy in mechanically ventilated, critically ill patients: a randomised controlled trial. Lancet. 2009, 373 (9678): 1874-1882. 10.1016/S0140-6736(09)60658-9.

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    Elliott D, Denehy L, Berney S, Alison JA: Assessing physical function and activity for survivors of a critical illness: a review of instruments. Aust Crit Care. 2011, 24 (3): 155-166. 10.1016/j.aucc.2011.05.002.

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Author information

Correspondence to D Mcwilliams.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Mcwilliams, D., Atkins, G., Hodson, J. et al. Is the manchester mobility score a valid and reliable measure of physical function within the intensive care unit. ICMx 3, A553 (2015) doi:10.1186/2197-425X-3-S1-A553

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Keywords

  • Critical Care
  • Nursing Staff
  • Prospective Observational Study
  • Hospital Length
  • Barthel Index