• Olivier Huet, Debbie Ramsey, Sandra Miljavec, Adam Jenney, Cecile Aubron, Andrea Aprico, Nada Stefanovic, Beverley Balkau, Geoff A Head, Judy B de Haan, and Jaye P F Chin-Dusting.
• Baker IDI Heart and Diabetes Institute, The Alfred Hospital, Victoria, Australia. olivier.huet@bakeridi.edu.au
• Shock. 2013 Jun 1;39(6):488-94.

AbstractWith animal models, death as an intentional end point is ethically unacceptable. However, in the study of septic shock, death is still considered the only relevant end point. We defined eight humane end points into four stages of severity (from healthy to moribund) and used to design a clinically relevant scoring tool, termed "the mouse clinical assessment score for sepsis" (M-CASS). The M-CASS was used to enable a consistent approach to the assessment of disease severity. This allowed an ethical and objective assessment of disease after which euthanasia was performed, instead of worsening suffering. The M-CASS displayed a high internal consistency (Cronbach α = 0.97) with a high level of agreement and an intraclass correlation coefficient equal to 0.91. The plasma levels of cytokines and markers of oxidative stress were all associated with the M-CASS score (Kruskal-Wallis test, P < 0.05). The M-CASS allows tracking of disease progression and animal welfare requirements.

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