Culley L L, Henwood D K, Clark J J, Eisenberg M S, Horton C
King County Emergency Medical Services Division, Seattle-King County Department of Public Health.
Ann Emerg Med. 1994 Nov;24(5):867-72. doi: 10.1016/s0196-0644(54)00223-5.
To determine whether criteria based dispatch (CBD) improved the efficiency of the emergency medical services system.
A before and after design was used to measure effects of CBD. Data were reviewed from medical reports from January 1986 through June 1992.
King County, Washington, excluding the city of Seattle.
Residents who called 911 to report a medical emergency.
Emergency medical dispatching (EMD), basic life support (BLS), and advanced life support (ALS).
Findings show a decrease in ALS responses for two tracer conditions that medical control physicians determined not require ALS intervention. The percentage of febrile seizures in which paramedics responded decreased from 41% to 21% (P < .001). The percentage of cerebrovascular accidents in which paramedics responded decreased from 41% to 28% (P < .001). CBD led to a decrease, from 4.7% to 3.8% (P < .001), in frequency of requests by BLS units for dispatch of ALS units. There was no increase in the time required to dispatch each call.
CBD increased the efficiency of the EMS system by significantly reducing ALS responses to incidents not requiring ALS intervention and reducing requests by BLS units for dispatch of ALS units while maintaining a consistent time from receipt of call to dispatch.
确定基于标准的调度（CBD）是否提高了紧急医疗服务系统的效率。
采用前后对照设计来衡量CBD的效果。回顾了1986年1月至1992年6月的医疗报告数据。
华盛顿州金县，不包括西雅图市。
拨打911报告医疗紧急情况的居民。
紧急医疗调度（EMD）、基础生命支持（BLS）和高级生命支持（ALS）。
研究结果显示，对于医疗控制医生确定不需要ALS干预的两种追踪情况，ALS响应有所减少。护理人员对热性惊厥的响应百分比从41%降至21%（P < .001）。护理人员对脑血管意外的响应百分比从41%降至28%（P < .001）。CBD使BLS单位请求派遣ALS单位的频率从4.7%降至3.8%（P < .001）。每次呼叫的派遣时间没有增加。
CBD提高了紧急医疗服务系统的效率，显著减少了对不需要ALS干预的事件的ALS响应，并减少了BLS单位请求派遣ALS单位的情况，同时保持了从接到呼叫到派遣的一致时间。
