Syncope is a common medical problem, with a frequency between 15% and 39%. In the general population, the annual number episodes are 18.1-39.7 per 1000 patients, with similar incidence between genders. The first report of the incidence of syncope is 6.2 per 1000 person-years. However, there is a significant increase in the incidence of syncope after 70 years of age with rate annual 19.5 per tho...

A prospective study of 132 patients with severe cornmunity-acquired pneumonia (CAP) treated in the ICU was carried out to determine the causative agents, the value of the clinical, biological, and radiologic features in predicting the etiology, and to define prognostic factors. The study group included 98 men and 34 women (mean age: 58 ± 18 years). The most frequent underlying condition was COP...

1 M.Sc student, Science and Research Branch, Islamic Azad University, Tehran, Iran. 2 Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran 3 Ph.D Student, Yazd Branch, Islamic Azad University, Yazd, Iran 4 Ph.D Student, Science and Research Branch, Islamic Azad University, Tehran, Iran. 5 Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran,...

BACKGROUND We conducted this study to compare the outcome of assisted reproductive technology (ART) procedures and recovery from anesthesia in women who received opioid analgesia with remifentanil versus fentanyl. MATERIALS AND METHODS This double-blind, randomized clinical trial was carried out in the Yazd Research and Clinical Center for Infertility, Yazd, Iran. We studied 145 women who wer...

introduction: the clinical and paraclinical characteristics of patients with congestive heart failure (chf) have been described by a number of previous studies, but very little information is available on this issue in iran. this study aimed to delineate the clinical and paraclinical characteristics of iranian patients hospitalized with chf. methods: during an observational, analytical, descrip...

BACKGROUND The appropriate choice of a contraceptive method has been a major issue in reproductive health research. Cu T intrauterine device (Cu T IUD) has been introduced as one of the most effective contraceptive methods in the world, however, the relationship between prior use of Cu T IUD and secondary infertility has not been evaluated in Iran. To examine the association of Cu T-380A IUD an...

In the last decades, Systems Biology (including cancer research) has been driven by technology, statistical modelling and bioinformatics. In this paper we try to bring biological and philosophical thinking back. We thus aim at making different traditions of thought compatible: (a) causality in epidemiology and in philosophical theorizing-notably, the "sufficient-component-cause framework" and t...