Albert Einstein Medical Center, Philadelphia, PA, USA.
Prehosp Disaster Med. 2010 Jul-Aug;25(4):335-9. doi: 10.1017/s1049023x0000830x.
The objective of this study was to evaluate the time saved by usage of lights and siren (L&S) during emergency medical transport and measure the total number of time-critical hospital interventions gained by this time difference.
A retrospective study was performed of all advanced life support (ALS) transports using lights and siren to this university emergency department during a three-week period. Consecutive times were measured for 112 transports and compared with measured transport times for a personal vehicle traveling the same day of the week and time of day without lights and siren. The time-critical hospital interventions are defined as procedures or treatments that could not be performed in the prehospital setting requiring a physician. The project assessed whether the patients received the hospital interventions within the average time saved using lights and siren transport.
The average difference in time with versus without L&S was -2.62 minutes (95% CI: -2.60- -2.63, paired t-test p<0.0001). The average transport time with L&S was 14.5±7.9 minutes (min) (1 standard deviation/minute (min), range=1-36 min.). The average transport time without L&S was 17.1±8.3 min (range=1-40 min). Of the 112 charts evaluated, five patients (4.5%) received time-critical hospital interventions. No patients received time-critical interventions within the time saved by utilizing lights and siren. Longer distances did not result in time saved with lights and siren.
Limiting lights and siren use to the patients requiring hospital interventions will decrease the risks of injury and death, while adding the benefit of time saved in these critical patients.
本研究旨在评估在医疗急救转运中使用警灯和警笛（L&S）可节省的时间，并测量通过这一时间差异获得的总共有多少时间关键的医院干预措施。
对三周内使用警灯和警笛前往该大学急诊部的所有高级生命支持（ALS）转运进行了回顾性研究。连续测量了 112 次转运的时间，并与当天同一周和同一时间使用个人车辆无警灯和警笛行驶的转运时间进行了比较。时间关键的医院干预措施被定义为无法在院前环境中进行而需要医生进行的程序或治疗。该项目评估了患者是否在使用警灯和警笛运输节省的平均时间内接受了医院干预措施。
使用警灯和警笛与不使用警灯和警笛的时间差异平均为-2.62 分钟（95%CI：-2.60--2.63，配对 t 检验 p<0.0001）。使用警灯和警笛的平均转运时间为 14.5±7.9 分钟（min）（1 个标准差/分钟（min），范围为 1-36 min）。不使用警灯和警笛的平均转运时间为 17.1±8.3 min（范围为 1-40 min）。在评估的 112 份图表中，有 5 名患者（4.5%）接受了时间关键的医院干预措施。没有患者在使用警灯和警笛节省的时间内接受时间关键的干预措施。距离较远并没有通过使用警灯和警笛节省时间。
限制仅对需要医院干预的患者使用警灯和警笛，将降低受伤和死亡的风险，同时为这些危急患者增加节省时间的好处。
