Overcrowding in the Emergency Department -- Does Volume of Emergency Room Patients Affect Ordering of CT Scans?

Moser, Franklin G.; Maya, Marcel; Young, Sun; Blaszkiewicz, Laura
October 2009
Internet Journal of Emergency Medicine;Oct2009, Vol. 6 Issue 1, p2
Academic Journal
CAT scans are among the most expensive, non-invasive tests that can be readily ordered in an Emergency Department. As such it becomes important to understand if there are non-medical factors involved in requesting performance of scans by ED doctors. In an attempt to discern if crowding in the ED or Hospital had any effect on this, data was collected for a six week period in April and May of 2006. After an exhaustive review of the data - including a multiple regression analysis - no effect of ED or hospital census on scan ordering could be discovered. A minor negative effect (scans were less likely to be positive if it was busy in the ED and the hospital) by a combination of these variables on the percent of scans judged positive was derived.If there are non-medical influences of scan ordering it is does not appear to be crowding.


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