Please use this identifier to cite or link to this item: https://doi.org/10.1111/j.1553-2712.2010.00860.x
DC FieldValue
dc.titleReducing ambulance response times using geospatial-time analysis of ambulance deployment
dc.contributor.authorOng, M.E.H.
dc.contributor.authorChiam, T.F.
dc.contributor.authorNg, F.S.P.
dc.contributor.authorSultana, P.
dc.contributor.authorLim, S.H.
dc.contributor.authorLeong, B.S.-H.
dc.contributor.authorOng, V.Y.K.
dc.contributor.authorChing Tan, E.C.
dc.contributor.authorTham, L.P.
dc.contributor.authorYap, S.
dc.contributor.authorAnantharaman, V.
dc.date.accessioned2016-06-01T10:33:40Z
dc.date.available2016-06-01T10:33:40Z
dc.date.issued2010-09
dc.identifier.citationOng, M.E.H., Chiam, T.F., Ng, F.S.P., Sultana, P., Lim, S.H., Leong, B.S.-H., Ong, V.Y.K., Ching Tan, E.C., Tham, L.P., Yap, S., Anantharaman, V. (2010-09). Reducing ambulance response times using geospatial-time analysis of ambulance deployment. Academic Emergency Medicine 17 (9) : 951-957. ScholarBank@NUS Repository. https://doi.org/10.1111/j.1553-2712.2010.00860.x
dc.identifier.issn10696563
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/124897
dc.description.abstractObjectives: This study aimed to determine if a deployment strategy based on geospatial-time analysis is able to reduce ambulance response times for out-of-hospital cardiac arrests (OOHCA) in an urban emergency medical services (EMS) system. Methods: An observational prospective study examining geographic locations of all OOHCA in Singapore was conducted. Locations of cardiac arrests were spot-mapped using a geographic information system (GIS). A progressive strategy of satellite ambulance deployment was implemented, increasing ambulance bases from 17 to 32 locations. Variation in ambulance deployment according to demand, based on time of day, was also implemented. The total number of ambulances and crews remained constant over the study period. The main outcome measure was ambulance response times. Results: From October 1, 2001, to October 14, 2004, a total of 2,428 OOHCA patients were enrolled into the study. Mean ± SD age for arrests was 60.6 ± 19.3 years with 68.0% male. The overall return of spontaneous circulation (ROSC) rate was 17.2% and survival to discharge rate was 1.6%. Response time decreased significantly as the number of fire stations/fire posts increased (Pearson χ2 = 108.70, df = 48, p < 0.001). Response times for OOHCA decreased from a monthly median of 10.1 minutes at the beginning to 7.1 minutes at the end of the study. Similarly, the proportion of cases with response times < 8 minutes increased from 22.3% to 47.3% and < 11 minutes from 57.6% to 77.5% at the end of the study. Conclusions: A simple, relatively low-cost ambulance deployment strategy was associated with significantly reduced response times for OOHCA. Geospatial-time analysis can be a useful tool for EMS providers. © 2010 by the Society for Academic Emergency Medicine.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1111/j.1553-2712.2010.00860.x
dc.sourceScopus
dc.subjectemergency medical services
dc.subjectgeographic information systems
dc.subjectheart arrest
dc.typeArticle
dc.contributor.departmentDUKE-NUS GRADUATE MEDICAL SCHOOL S'PORE
dc.contributor.departmentSURGERY
dc.description.doi10.1111/j.1553-2712.2010.00860.x
dc.description.sourcetitleAcademic Emergency Medicine
dc.description.volume17
dc.description.issue9
dc.description.page951-957
dc.description.codenAEMEF
dc.identifier.isiut000281632000006
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