title: Wireless local area network in a prehospital environment.
abstract: BACKGROUND
  Wireless local area networks (WLANs) are considered the next generation of clinical data network. They open the possibility for capturing clinical data in a prehospital setting (e.g., a patient's home) using various devices, such as personal digital assistants, laptops, digital electrocardiogram (EKG) machines, and even cellular phones, and transmitting the captured data to a physician or hospital. The transmission rate is crucial to the applicability of the technology in the prehospital setting.
  
  
  METHODS
  We created two separate WLANs to simulate a virtual local are network environment such as in a patient's home or an emergency room (ER). The effects of different methods of data transmission, number of clients, and roaming among different access points on the file transfer rate were determined.
  
  
  RESULTS
  The present results suggest that it is feasible to transfer small files such as patient demographics and EKG data from the patient's home to the ER at a reasonable speed. Encryption, user control, and access control were implemented and results discussed.
  
  
  CONCLUSIONS
  Implementing a WLAN in a centrally managed and multiple-layer-controlled access control server is the key to ensuring its security and accessibility. Future studies should focus on product capacity, speed, compatibility, interoperability, and security management.
authors.affiliation: Health Informatics Program, Department of Health Services Administration School of Health Related Professions, University of Alabama at Birmingham (UAB), Birmingham, Alabama, USA. dongquan@uab.edu
authors.forename: Dongquan
authors.initials: D
authors.lastname: Chen
authors.forename: Seng-jaw
authors.initials: SJ
authors.lastname: Soong
authors.forename: Gary J
authors.initials: GJ
authors.lastname: Grimes
authors.forename: Helmuth F
authors.initials: HF
authors.lastname: Orthner
mesh_terms: D040421:Cell Phone; D034201:Computers, Handheld; D004632:Emergency Medical Services / Q000458:organization & administration*; D006699:Home Care Services / Q000458:organization & administration*; D006801:Humans; D007256:Information Systems; D008122:Local Area Networks / Q000295:instrumentation* / Q000706:statistics & numerical data; D016347:Medical Records Systems, Computerized; D008838:Microcomputers; D009936:Organizational Innovation; D012637:Security Measures; D013686:Telemetry / Q000295:instrumentation* / Q000706:statistics & numerical data; D014481:United States