Perme ICU Mobility Score © 2008 TMH


The Perme ICU Mobility Score (Perme Score) was created by Christiane Perme, PT CCS FCCM and it is an ICU-specific tool to measure mobility status of any patients during a critical illness.

Perme Score License Agreement

  • The Perme Score is copyrighted and Houston Methodist Hospital has all rights.

  •  A License agreement with Houston Methodist Hospital MUST signed your are planning to: 

  • * Please submit the “Perme Score License Agreement” form to Christiane Perme, PT CCS FCCM at The form must be fully completed and signed by a legal representative.

  • * Once the License Agreement form completed and signed is submitted,  you will then be able to use the Perme Score for clinical and/or research purposes.

  •  There are no charges/fees associated with the use of the Perme Score. 

English Version - References

  1.   Perme C et al. A tool to assess mobility status in critically ill patients: the Perme Intensive Care Unit Mobility Score. Methodist Debakey Cardiovasc J. 2014 Jan-Mar; 10(1):41-9. PMID: 24932363.

  2.   Nawa RK et al. Initial interrater reliability for a novel measure of patient mobility in a cardiovascular intensive care unit. J Crit Care. 2014 Jun; 29(3):475. PMID: 24630690.


Portuguese Language Translation - Reference

  1.   Kawaguchi YMF et al. Perme Intensive Care Unit Mobility Score and ICU Mobility Scale: translation into Portuguese and cross-cultural adaptation for use in Brazil. J Bras Pneumol 2016; 42(6):429-431. PMID:28117473. 

  German Language Translation - Reference

  1.   Nydahl P et al. The German translation of the Perme Intensive Care Unit Mobility Score and inter-rater reliability between physiotherapists and nurses. European Journal of Physiotherapy. Pages 1-7. Published online: 24 Nov 2017. 


 Spanish Language Translation - Reference

  1. Wilches Luna EC, Hernández NL, Siriani de Oliveira A, Kenji Nawa R, Perme C, Gastaldi AC. Perme ICU Mobility Score (Perme Score) and the ICU Mobility Scale (IMS): translation and cultural adaptation for the Spanish language.Colomb Med (Cali). 2018 Dec 30;49(4):265-272. PMID: 30700919.


Additional References:

  • Perme C et al. Relationship of the Perme ICU Mobility Score and Medical Research Council Sum Score With Discharge Destination for Patients in 5 Different Intensive Care Units. 2020. Journal of Acute Care Physical Therapy.

  • Wilches EC et al. Spanish version of the Perme Intensive Care Unit Mobility Score: Minimal Detectable Change and Responsiveness. Physiotherapy Research International. Version of record online: 14 September 2020.

  • Pereira CS et al. The Perme scale score as a predictor of functional status and complications after discharge from the intensive care unit in patients undergoing liver transplantation. Rev Bras Ter Intensiva. 2019;31(1):57-62.



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About the Perme Score

  • The Perme Score was developed to measure a patient’s mobility status starting with the ability to follow commands and culminating in the distance walked in 2 minutes.

  • It ranges from 0 to 32 and reflects the patient’s mobility status at a particular moment in time.

  • The score is derived from 15 items grouped in 7 categories:

    • Mental Status

    • Potential mobility barriers

    • Functional strength

    • Bed mobility

    • Transfers

    • Gait

    • Endurance

  • The above categories were designed to reflect the impaired mobility of patients in the ICU, which can arise from a variety of factors.

  •   A “High Perme Score” indicates few potential mobility barriers in ICU and decreased assistance needed for mobility activities.

  •   A “Low Perme Score” indicates more potential barriers to mobility in ICU and more assistance needed for mobility activities.

  •   Clinicians are encouraged to use the Perme Score for clinical and research practice for any patient in ICU.


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​© 2014 by Perme ICU Rehab Seminars, INC.

  All rights reserved.