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This web page accompanies “Using Process Mapping to Identify Patient Safety Hazards in Micro-Systems” in Quality and Safety in Healthcare. by John Grout |
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The top-down method is also called a parking lot list. The main process steps are shown across the top and the sub-processes of each are listed below, effectively limiting the level of detail presented. Parking lot lists are always hierachical in nature. The hierarchy is express by how the steps are arranged on the map. A step placed below a process step is a lower level in the hierarchy than a step placed beside the previous process step. The top-down aproach is rated as a “weak or implicit” because only one level of hierarchy is specificially provided and no linkages to other maps is invisioned. an example of a top-down process map that is adapted from the article by DeRosier et al.* is shown below. |
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see a 2nd example |
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If top-down maps are turned “on their side,” so that the main process steps are listed vertically, and the subprocess steps are indented, then process mapping can be done using the “outline” capabilities of most common word processing. This would also allow for many layers of hierarchy and increased levels of detail. Moreover, this alteration to the approach would allow process information to be effectively elicited in group sessions. The previous example is recast “on its side” below, with added lines indicating opportunities to add sub-sub-processes. This approach is not particularly easy to read, so a graphical presentation should probably created after the information has been elicited. |
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* DeRosier J, Stalhandske E, Bagian J, Nudell T. Using health care failure mode and effect analysis: The VA national center for patient safety’s prospective risk analysis system. Jt Comm J Qual Improv. 2002 May; 28(5):248-267. |
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[Process Mapping] [Flow Chart] [Top Down] [Swim Lane] [Value Stream] |