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Amid R.,Shahid Beheshti University of Medical Sciences | Raoofi S.,Shiraz University of Medical Sciences | Kadkhodazadeh M.,Shahid Beheshti University of Medical Sciences | Movahhedi M.R.,Sharif University of Technology | Khademi M.,Ahwaz University of Medical science
Biomedizinische Technik | Year: 2013

The aim of this study was to use finite element analysis (FEA) to assess the influence of microthread design at the implant neck on stress distribution in the surrounding bone. A commercially available implant with 3.5 mm diameter and 10.5 mm length was selected and used as a model. For the purpose of designing the microthread implant model, microthreads were added to the implant neck in a computerized model. A force measuring 100 N was then applied to the entire surface of the abutment in the vertical direction. The results showed that in both models, stress was mainly concentrated at the cortical bone adjacent to the neck of the implant. Maximum stress values in the cortical bone surrounding the implant surface periphery were 12 and 6.25 MPa for the microthread and conventional models, respectively. In this study, we conclude that adding a microthread design at the implant neck decreased stress values in the adjacent bone. Source


Pourmehdi Z.,Razi University | Tabatabaei S.,Ahwaz University of Medical science | Salimbahrami S.,Hamadan University of Medical Sciences | Borzouei S.,Hamadan University of Medical Sciences
Shiraz E Medical Journal | Year: 2013

Objective: we compared the use of intrathecal bupivacaine in combination with general anesthesia to general anesthesia alone in patients undergoing coronary artery bypass grafting (CABG) surgery for its impact on time to extubation. Methodology: In this case control double blind study we compared 34 patients in Imam Khomeini Hospital, Ahwaz, Iran, from May 2011 to September 2011.The patients were randomly assigned to receive general anesthesia with prior administration of intrathecal bupivacaine 0.5% at a dosage of 20 mg (bupivacaine or case group n = 17) or general anesthesia alone (control group n = 17) according to a simple computer-generated list. Results: Mean extubation time in bupivacaine group was213.00 ± 3.06 (3h and 33m) and in control group was 257.12 ± 4.49 minutes (4h and 17m).the difference between two groups was significant(P < 0.05). Conclusion: Intrathecal bupivacaine offers promise as a useful adjunct in reducing postoperative time to extubation in coronary artery bypass grafting (CABG) surgery. © 2013, Shiraz E Medical Journal, Shiraz, Iran. All rights reserved. Source


Hossein R.,Head and Neck Surgery | Kambiz M.,Head and Neck Surgery | Mohammad D.,Ahwaz University of Medical science | Mina N.,Head and Neck Surgery
Journal of Craniofacial Surgery | Year: 2010

Eagle syndrome is considered a rare disease. It is an aggregation of symptoms that includes neck, throat, and hemifacial pain; sensation of foreign body in the throat; dysphagia; otalgia; and change in voice as a direct result of an elongated styloid process or calcified stylohyoid ligament.The clinical diagnosis is generally difficult and must be confirmed by radiologic imaging. Our patient was a 37-year-old woman who had a 3 years' history of dysphagia and foreign body sensation. Computed tomographic scan showed a long left styloid process and calcification in the upper part of the stylohyoid ligament suggestive of Eagle syndrome. The patient underwent surgical removal of the elongated styloid process through an intraoral approach. The patient became symptom-free at 9 months after the surgery. © 2010 by Mutaz B. Habal, MD. Source


Motlagh M.E.,Ahwaz University of Medical science | Heidarzadeh A.,Guilan University | Hashemian H.,Guilan University | Dosstdar M.,Guilan University
International Journal of Preventive Medicine | Year: 2012

Background: In Iran, diarrheal disease is the fourth cause of under five-year mortality. Proper care-seeking behavior and system-based disease management in the national field will have a great effect in reducing morbidity and mortality. Methods: This nationwide study was performed on a target population of rural and urban communities; in all 31 provinces of the Islamic Republic of Iran. One lakh three thousand three hundred and thirty one (103331) families were sampled by multistage stratified random sampling and were interviewed with a standard data collection form. The collected data was entered into the Stata8.0 software and analyzed by the survey analysis method. Results: Of the 14625(10.1%) children who were reported to have diarrheal diseases two weeks prior to the interview, 8.8% were cured and 1.5% were not. About 70% of them had at least one visit for health seeking the most of patients were seen by (Behvarz) in the rural and by a generala rural health worker pediatrician in the urban areas. About 62% of the patients in urban and 57% in the rural areas had been treated with antibiotics and these rates for ORS were 51% and 65%, respectively. The factors most related to a care-seeking pattern were the level of routine preventive well-child care, number of siblings, child age, and living area. Conclusion: According to this national survey, our health system needs to integrate all the levels of prevention, especially the Integrated Management of Child Illnesses (IMCI) programs with a family physician project. Futher more, there is a great need for empowering the referral system and gate keeping in all referral levels, to make efficient national integrated programs. Source


Sarkaki A.R.,Ahwaz University of Medical science | Haddad M.K.,Kerman Medical University | Soltani Z.,Kerman Medical University | Shahrokhi N.,Kerman Medical University | Mahmoodi M.,Rafsanjan University of Medical Sciences
Journal of Neurotrauma | Year: 2013

Following a traumatic brain injury (TBI), excessive release of proinflammatory cytokines is the major cause of cerebral edema and neuronal loss. This study was designed to examine changes in concentrations of some proinflammatory cytokines-including interleukin-1 beta (IL-1β), interleukin 6 (IL-6), tumor necrosis factor-alpha (TNF-α), and transforming growth factor-beta (TGF-β)-in a rat model of TBI in which the animals were treated with different doses of estrogen or progesterone 6 and 24 h after the TBI. Adult female rats were divided into 14 groups. Hormones or vehicle were given intraperitoneally 30 min after a moderate TBI was induced by the Marmarou method. The levels of proinflammatory cytokines in brain were measured at 6 and 24 h after the TBI. A high dose of estrogen (E2) or a low dose of progesterone (P1) increased brain levels of IL-1β 52.7% and 79.2% respectively at 6 h after the TBI. By 24h, IL-1β levels in the brain were 27.5% and 27% lower following administration of estrogen low dose (E1) or E2, respectively. High-dose administration of progesterone reduced brain levels of IL-6 to 45.9% at 6 h after the TBI, and P1 and E1 treatment significantly decreased IL-6 levels at 24 h. Brain levels of TNF-α were 72.5% lower at 6 h after the TBI following P2 treatment and 48.5% higher at 24 hrs following treatment with E2. The levels of TGF-β were also 3.37 times higher 24 h after the TBI following treatment with E1. Both doses of the hormones tested increases TGF-β levels 6 h after the TBI. Based on our findings, we conclude that progesterone and estrogen influence the levels of proinflammatory cytokines either at the primary or secondary stages after a TBI. Accordingly, this study suggests a mechanism by which hormones reduce cerebral edema. © 2013, Mary Ann Liebert, Inc. Source

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