before making decisions about the investment and financing the companies. it is necessary to know how the value of a company is determined. in this article three valuation methods are discussed: 1) value dirver method. 2) free cash flow method 3) economic value added method. in these methods the factors affecting the value of companies such as operating rate of return, cost of capital. amount o...

hypothermia generates potentially severe complications in operating or recovery room. forced air warmer is effective to maintain body temperature. extremely low frequency electromagnetic field (elf-emf) is harmful to human body and mainly produced by electronic equipment including convective air warming system. we investigated elf-emf from convective air warming device on various temperature se...

background and purpose: the objective of medical education is to train competent and qualified workforce in order to provide services in various health environments. one of the important objectives of operating room students is to train workforce who can involve in patient’s health and recovery. training these students should cause clinical ability and independent decision making during surgery...

Objectives. To review our experience of conducting auditory brainstem response (ABR) test on children in the operating room and discuss the benefits versus limitations of this practice. Methods. Retrospective review study conducted in a pediatric tertiary care facility. A total of 267 patients identified with usable data, including ABR results, medical and surgical notes, and follow-up evaluati...

background and purpose: upon centuries, wars have taken over countries due to theadvancement of sophisticated warfare,causingserious injuries among soldiers. nurses are directly involved in preoperative and postsurgical patient care. one of the most remarkable contributions of the iranian operating room nurses was to provide medical care for wounded soldiers in field hospitals during the iran-i...

background : staphylococcus aureus (s. aureus) is one of the major virulence factors of hospital and community acquired infections. healthcare workers can be the host of s.aureus for many months. and it is very important due to the possibility of transmission to patients. the aim of this study was to determine the prevalence of s.aureus nasal carriers, the antibiotic susceptibility pattern and ...

The aim of our work is to reduce the stress and strain for the medical staff and simultaneously to increase the efficiency and safety of an integrated operating room system (SIOS) by an ergonomic redesign of the system. SIOS system is a central control system developed by Siemens Medical Solutions mainly used for laparoscopic operations. This new integrated system has been created to improve th...