Journal of

Background: The hospital is an important element in the new public health. The health in the populations requires access to the medical and hospital services as well as preventive care and a healthy environment. This study attempts to review the important factors to be considered in the hospital sites selected and design in the urban, regional and country levels. Finally, suggestions have exhibited to the hospital sites selected and design for its optimum and efficiency. It's also suggests proposals for appropriate site selected and design of hospitals for optimum efficiency.
Materials & Methods: This is a review article which documentary method and Internet search have been employed.
Results: What principles do you use to decide on the location and layout of a new or expanded site selection? What information do you need to consider before selecting a site location? How do you maximize inherently safer design with minimal impact on the cost and schedule? How do you manage sitting issues when limited space is available? How do you address security concerns in a new site? These questions are considered cases in paper to attempt to answer it.
Conclusion: To determine the feasibility of the project, the first consideration in the survey is to study the character, needs and possibilities of the community which the hospital is going to serve. The hospital facilities in the region should be studied in terms of:
• Population of the region
• Quality and number of hospitals
• Patient and disease pattern
• Cost of investigation and treatment
• Physical and Environmental characteristics of the site
This study considers the specific problems of creating a well distributed network of hospitals that deliver its services to the target population in minimal time, pollution and cost. The study has showed that if these criteria considered, it would assessed the extent to which authorities of hospital planning and administration have utilized in the planning.

Background: Demographic prediction indicates that Iran population move towards an aged society until 2025, Hence, the need for medical care will be increased.  The study aimed at predicting geriatric specialists based on dynamic system approach for the Iranian elderly.

Materials and Methods: After an exploratory study, data gathering and building similar structured in order to determine geriatrics number prediction by considering the important factors. Causal loop diagram to show relationship between variables, stock-flow diagrams for quantitative analysis of system dynamic behavior was conducted and model equations in Vensim software version 5 used.

Results: After simulation, intake students' simulated model revealed increased trend then a sharp decline and finally the pattern had fixed trend from 2009 to 2012. Pattern of physician who was still in study and also graduated physician was in growing trend. Employed physician had growing trend and then it fixed, and retired physician had fixed trend at first and then had an incremental trend. Finally, the various behavior of workforce assessed in three level.

Conclusion: According to increasing  growth of the elderly population until 2025,  we will encounter  with shortage  more than 2500  geriatrics which can be  compensate by 50% graduated admissions of the major annually.