Hi Dominic

Have a look at this video ( in fact the site is good ) :

http://www.risky-business.com/talk-18-story-of-bethany-bowen-2.html

Note the comments about the investigation and the expert witness into this death by the mother ( very tragic )

Geoff these could answer some of your questions if you can get copies :

• Wang B, Fedele J, Pridgen B, Rui T, Barnett L, Granade C, Helfrich R, Stephenson B, Lesueur D, Huffman T, Wakefield JR, Hertzler LW & Poplin B. Evidence-Based Maintenance: Part III, Enhancing patient safety using failure code analysis, J Clin Eng, 2011, 36:72-84.

• Wang B, Fedele J, Pridgen B, Rui T, Barnett L, Granade C, Helfrich R, Stephenson B, Lesueur D, Huffman T, Wakefield JR, Hertzler LW & Poplin B. Evidence-Based Maintenance: Part II - Comparing maintenance strategies using failure codes, J Clin Eng, 2010, 35:223-230.

• Wang B, Fedele J, Pridgen B, Rui T, Barnett L, Granade C, Helfrich R, Stephenson B, Lesueur D, Huffman T, Wakefield JR, Hertzler LW & Poplin B. Evidence-Based Maintenance: Part I - Measuring maintenance effectiveness with failure codes, J Clin Eng, 2010, 35:132-144