King Faisal Specialist Hospital & Research Center is a major tertiary care institution, serving patients referred throughout the Kingdom of Saudi Arabia and Middle East, and hence, the expectations of these patients are very high. The ED is an important entry point to the health care system in the institution. The ED is a 30 bed unit based within an 800 bed tertiary care center. The ED serves all critical patients and those patients

followed up at the various sub-specialty departments. It has an annual volume of 65,000 patients, with 73% of them being above 14 years of age. A large percentage of the patients are followed up for tertiary care problems in several specialties, such as oncology including bone marrow Inhibitors,research,lifescience,medical transplant, cardiovascular diseases, neurosciences, medical genetics, and renal and liver transplants. Since the hospital functions as a highly specialized central tertiary care center for the country, the patient mix is quite different than other general hospitals. Our hospital receives patients Inhibitors,research,lifescience,medical with tertiary care needs from a large geographic area, as these individuals do not have access to tertiary care elsewhere in the country. Prolonged waiting before Inhibitors,research,lifescience,medical treatment in the ED may negatively color patients’ perceptions about their care providers during such visits. The need for the use

of an objective process of patient prioritization, and the theoretical applicability of the CTAS to any ED, prompted us to implement the CTAS system in the institution. Inhibitors,research,lifescience,medical The CTAS has been extensively studied and validated in a variety of settings [9-11]; however, these studies were done in areas where large integrated health care systems are already established, unlike in Saudi Arabia where patients do not necessarily have an identifiable primary care provider. Additionally, our patient population has unique cultural and

linguistic features that are not present in other studies. Our study is the first in an Arab Inhibitors,research,lifescience,medical country that aims to evaluate the feasibility and validity of CTAS by comparing certain ED quality indicators with pre-established CTAS Ku-0059436 triage objectives, and to evaluate the relationship between CTAS triage level and waiting times. Methods This retrospective study was performed using randomly selected patients who presented to the Emergency Department of the King Faisal Specialist Carfilzomib Hospital and Research Center, between November 2004 and February 2005. The study was approved by the Institutional Review Board (Research Ethics Board) of King Faisal Specialist Hospital and Research Center. Data Collection A random sample of 25 charts was selected every day for the 4 month study period. The registration clerk, triage nurse and evaluating physician recorded ED patient’s arrival time, triage time and time seen by physician respectively, on the patient’s chart during his/her visit.