Figure 5-46 Mistake-Proofing the Design of Health Care Processes - Figure 5.46A. Standardized headwalls allow staff members to work on 'auto-pilot' Figure 5.46B. Another view of a standardized headwall Return to Document Current as of May 2007 Internet Citation: Figure 5-46: Mistake-Proofing the Design of Health Care Processes -. May 2007. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/mistakeproof/mistakefig5-46.html