What are some limitations of process measures?
Process measures have several advantages, however they have some limitations as well. Process measures might not always indicate how well the process was done. For example, measure 4 (use of embolic protection devices in the treatment of saphenous vein bypass graft disease) measures use of the embolic protection device during PCI but does not capture the technical skill with which it was deployed. Additionally, expending resources to measure processes that are already conducted at uniformly high rates is not justi ed, particularly when burdensome chart abstraction is required. This should be an area of future investigation.