scholarly journals Ambulance Locations in a Tiered Emergency Medical System in a City

2021 ◽  
Vol 11 (24) ◽  
pp. 12160
Author(s):  
Peter Jankovič ◽  
Ľudmila Jánošíková

This paper deals with optimizing the location of ambulance stations in a two-tiered emergency medical system in an urban environment. Several variants of station distribution are calculated by different mathematical programming models and are evaluated by a detailed computer simulation model. A new modification of the modular capacitated location model is proposed. Two ways of demand modelling are applied; namely, the aggregation of the ambient population and the aggregation of permanent residents at the street level. A case study of the city of Prešov, Slovakia is used to assess the models. The performance of the current and proposed sets of locations is evaluated using real historical data on ambulance trips. Computer simulation demonstrates that the modular capacitated location model, with the ambient population demand, significantly reduces the average response time to high-priority patients (by 79 s in the city and 62 s in the district) and increases the percentage of high-priority calls responded to within 8 min (by almost 4% in the city and 5% in the district). Our findings show that a significant improvement in the availability of the service can be achieved when ambulances are not accumulated at a few stations but rather spread over the city territory.

2007 ◽  
Vol 153 (5) ◽  
pp. 792-799 ◽  
Author(s):  
Heidi L. Estner ◽  
Christian Günzel ◽  
Gjin Ndrepepa ◽  
Frederic William ◽  
Dirk Blaumeiser ◽  
...  

2017 ◽  
Vol 127 (3) ◽  
pp. 109-112
Author(s):  
Sylwia Mojsym-Korybska ◽  
Katarzyna Książek ◽  
Marzena Furtak-Niczyporuk ◽  
Kinga Grabska-Kusiak ◽  
Agata Słowińska ◽  
...  

Abstract Introduction. The organizational structure of the National Emergency Medical system ensures the health of citizens. Unfortunately, patients present dangerous behaviors, thereby damaging the safety of workers during medical emergencies. Aggression and violence, in spite of the widespread perception of it as a negative phenomenon undermining the individual’s health, is an indispensable part of everyday life and work environment. Aim. The purpose of this study was to determine the incidence of acts of aggression that led to violence, and the types of occurrence of this phenomenon, which influenced the staff of the National Emergency Medical system. Material and methods. The study was conducted in 2015/2016 among the employees of the National Emergency Medical system in Lublin, Puławy and Zamość; the research tool was a questionnaire survey. Results. On the basis of the conducted research, it can be concluded that the employees of the National Emergency Medical system are, to a large extent, exposed to acts of aggression on the part of patients. Almost all the employees of the Accident & Emergency Units (98.2%) and almost all the employees of the Medical Rescue Teams (98.3%) encountered aggression from the patients. Conclusion. There observed a phenomenon of aggression as well as verbal and physical violence on the part of patients towards health care workers. Alcohol and drugs increased both verbal and physical aggression among patients. Employees of the National Emergency Medical system have indicated aggression as an intrinsic element in the work environment.


Author(s):  
Richard Chocron ◽  
Julia Jobe ◽  
Sally Guan ◽  
Madeleine Kim ◽  
Mia Shigemura ◽  
...  

Background Bystander cardiopulmonary resuscitation (CPR) is a critical intervention to improve survival following out‐of‐hospital cardiac arrest. We evaluated the quality of bystander CPR and whether performance varied according to the number of bystanders or provision of telecommunicator CPR (TCPR). Methods and Results We investigated non‐traumatic out‐of‐hospital cardiac arrest occurring in a large metropolitan emergency medical system during a 6‐month period. Information about bystander care was ascertained through review of the 9‐1‐1 recordings in addition to emergency medical system and hospital records to determine bystander CPR status (none versus TCPR versus unassisted), the number of bystanders on‐scene, and CPR performance metrics of compression fraction and compression rate. Of the 428 eligible out‐of‐hospital cardiac arrest, 76.4% received bystander CPR including 43.7% unassisted CPR and 56.3% TCPR; 35.2% had one bystander, 33.3% had 2 bystanders, and 31.5% had ≥3 bystanders. Overall compression fraction was 59% with a compression rate of 88 per minute. CPR differed according to TCPR status (fraction=52%, rate=87 per minute for TCPR versus fraction=69%, rate=102 for unassisted CPR, P <0.05 for each comparison) and the number of bystanders (fraction=55%, rate=87 per minute for 1 bystander, fraction=59%, rate=89 for 2 bystanders, fraction=65%, rate=97 for ≥3 bystanders, test for trend P <0.05 for each metric). Additional bystander actions were uncommon to include rotation of compressors (3.1%) or application of an automated external defibrillator (8.0%). Conclusions Bystander CPR quality as gauged by compression fraction and rate approached guideline goals though performance depended upon the type of CPR and number of bystanders.


2018 ◽  
Vol 51 (6) ◽  
pp. 1131-1134 ◽  
Author(s):  
Luigi Meloni ◽  
Maria Francesca Marchetti ◽  
Cristina Cacace ◽  
Michela Congia ◽  
Roberta Scotto ◽  
...  

2021 ◽  
pp. emermed-2021-211774
Author(s):  
Sang O Park ◽  
Dong Hyuk Shin ◽  
Changhoon Kim ◽  
Young Hwan Lee

IntroductionIn conventional basic life support (c-BLS), a lone rescuer is recommended to start chest compressions (CCs) after activating the emergency medical system. To initiate earlier CCs in lone-rescuer BLS, we designed a modified BLS (m-BLS) sequence in which the lone rescuer commences one-handed CCs while calling for help using a handheld cellular phone with the other free hand. This study aimed to compare the quality of BLS between c-BLS and m-BLS.MethodsThis was a simulation study performed with a randomised cross-over controlled trial design. A total of 108 university students were finally enrolled. After training for both c-BLS and m-BLS, participants performed a 3-minute c-BLS or m-BLS on a manikin with a SkillReporter at random cross-over order. The paired mean difference with SE between c-BLS and m-BLS was assessed using paired t-test.ResultsThe m-BLS had reduced lag time before the initiation of CCs (with a mean estimated paired difference (SE) of −35.0 (90.4) s) (p<0.001). For CC, a significant increase in compression fraction and a higher number of CCs with correct depth were observed in m-BLS (with a mean estimated paired difference (SE) of 16.2% (0.6) and 26.9% (3.3), respectively) (all p<0.001). However, no significant paired difference was observed in the hand position, compression rate and interruption time. For ventilation, the mean tidal volumes did not differ. However, the number of breaths with correct tidal volume was higher in m-BLS than in c-BLS.ConclusionIn simulated lone-rescuer BLS, the m-BLS could deliver significantly earlier CCs than the c-BLS while maintaining high-quality cardiopulmonary resuscitation.


2020 ◽  
Vol 3 (7) ◽  
pp. e2016094 ◽  
Author(s):  
David J. Prezant ◽  
Rachel Zeig-Owens ◽  
Theresa Schwartz ◽  
Yang Liu ◽  
Karen Hurwitz ◽  
...  

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