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Article ; Online: Prevalence and Antibiotic Resistance Pattern of Bacteria Causing Burn Wound Infection in Zare Hospital-2019-2020

Minoo Sotudeh / Mehrdad Gholami / Hamid Reza Goli

Journal of Mazandaran University of Medical Sciences, Vol 33, Iss 2, Pp 348-

2023 Volume 353

Abstract: Background and purpose: The occurrence of burn wound infection is a crucial concern in burn ward. The purpose of this study was to examine the prevalence and antibiotic resistance pattern of organisms causing burn wound infections in Zare Hospital of ... ...

Abstract	Background and purpose: The occurrence of burn wound infection is a crucial concern in burn ward. The purpose of this study was to examine the prevalence and antibiotic resistance pattern of organisms causing burn wound infections in Zare Hospital of Sari. Materials and methods: A total number of 370 samples of burn wounds were collected and cultured, and the bacteria leading to the infection were identified. Subsequently, the bacteria's antibiotic resistance pattern was determined by means of the disk agar diffusion method. The obtained data were analyzed using Chi-square and Fisher statistical tests. Results: Out of 370 samples, 219 positive cultures (59.1%) were reported. The bacteria with the highest occurrence were Acinetobacter baumannii (39.26%), Enterobacter aerogenes (21.46%), and Citrobacter freundii (15.52%). However, tetracycline proved to be the most efficacious antibiotic, whereas A. baumannii emerged as the most resilient organism in this investigation. Conclusion: The findings of the present study revealed that the change in the prevalence of organisms isolated from burn wound infection and the relative increase of A. baumannii and E. aerogenes, and the high-level antibiotic resistance of the bacteria.
Keywords	bacterial infection ; burn wound infection ; antibiotic resistance ; zare hospital ; Medicine ; R ; Medicine (General) ; R5-920
Subject code	630
Language	English
Publishing date	2023-12-01T00:00:00Z
Publisher	Mazandaran University of Medical Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A Survey on Exposure Parameters Variation due to Aging in Radiology Devices

Fataneh Nemati / Mahdi Mohammadi / Mehrdad Gholami

Journal of Biomedical Physics and Engineering, Vol 11, Iss 3, Pp 407-

2021 Volume 412

Abstract: The inevitable use of medical imaging examinations and lack of a suitable alternative lead to the need to control and minimize the amount of radiation from such artificial medical sources. To assess the relation between exposure parameters and lifetime ... ...

Abstract	The inevitable use of medical imaging examinations and lack of a suitable alternative lead to the need to control and minimize the amount of radiation from such artificial medical sources. To assess the relation between exposure parameters and lifetime of radiology devices, quality control tests were carried out on 13 radiology devices in 11 general hospitals. In this study, a barracuda dosimeter, SE-43137 Sweden, was calibrated to measure and record the quantities of kVp, mAs and exposure parameters. In all the devices using applying the minimum and maximum values of kVp, the minimum and maximum values of the internal resistances were calculated. The lowest mR/mA for the device C was observed at a flow rate of 200 mA (equal to 2,425), while the highest value was for the device A (2) at a current intensity of 200 mA (equal to 14.625). By increasing the age of the device, the output of the device is reduced. Therefore, to compensate for this decrease in the output, higher exposure conditions are usually applied to the device, which can greatly increase the damage to the device.
Keywords	quality control ; radiology devices ; aging ; internal resistance ; hospitals ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
Subject code	600
Language	English
Publishing date	2021-06-01T00:00:00Z
Publisher	Shiraz University of Medical Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Overuse of computed tomography for mild head injury

Maryam Saran / Morteza Arab-Zozani / Meysam Behzadifar / Mehrdad Gholami / Samad Azari / Nicola Luigi Bragazzi / Masoud Behzadifar

PLoS ONE, Vol 19, Iss 1, p e

A systematic review and meta-analysis.

2024 Volume 0293558

Abstract: Background Computed tomography (CT) scan is a common imaging technique used to evaluate the severity of a head injury. The overuse of diagnostic interventions in the health system is a growing concern worldwide. Objectives: The aim of this systematic ... ...

Abstract	Background Computed tomography (CT) scan is a common imaging technique used to evaluate the severity of a head injury. The overuse of diagnostic interventions in the health system is a growing concern worldwide. Objectives: The aim of this systematic review is to investigate the rate of CT scan overuse in cases of mild head injury. Methods Eligibility criteria: We encompassed observational studies-either designed as cohort, case-control, or cross-sectional investigations-that reported on CT scan overuse rates for mild head injuries. Studies had to be published in peer-reviewed, English-language sources and provide full content access Information sources: Web of Sciences, Scopus, Medline via PubMed, the Cochrane Library and Embase were searched from inception until April 1, 2023. Studies were included if reporting the overuse of CT scans for mild head injuries using validated criteria. Risk of bias: We used the Risk Of Bias In Non-randomised Studies - of Interventions (ROBINS-I) tool to evaluate the risk bias assessment of included studies. Two independent reviewers evaluated the eligibility of studies, extracted data, and assessed study quality by using the Newcastle-Ottawa Scale. Synthesis of results: Overuse estimates were calculated using a random-effects model. Subgroup analyses were performed to investigate any sources of heterogeneity. Point rate of overuse of CT scans for mild head injuries was the main outcome measured as percentage point estimates with corresponding 95% CIs. Results Included studies: Of the 913 potentially relevant studies identified, eight studies were selected for the final analysis. Synthesis of results: The pooled rate of CT scan overuse in patients with mild head injury was found to be 27% [95% CI: 16-43; I2 = 99%]. The rate of CT scan overuse in mild head injury cases varied depending on the criteria used. The rate of CT scan overuse was 37% [95% CI: 32-42; I2 = 0%] with the Glasgow Coma Scale (GCS), 30% [95% CI: 16-49; I2 = 99%] with the Canadian computed tomography head rule, ...
Keywords	Medicine ; R ; Science ; Q
Subject code	610
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Overuse of computed tomography for mild head injury

Maryam Saran / Morteza Arab-Zozani / Meysam Behzadifar / Mehrdad Gholami / Samad Azari / Nicola Luigi Bragazzi / Masoud Behzadifar

PLoS ONE, Vol 19, Iss

A systematic review and meta-analysis

2024 Volume 1

Keywords	Medicine ; R ; Science ; Q
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Antibiotic Resistance Pattern of Bacterial Agents Isolated from Blood Culture of Patients with Infective Endocarditis

Ghazale Hamedani / Rozita Jalalian / Alireza Davoudi Badabi / Maryam Mirzakhani / Mona Moshiri / Mehrdad Gholami

Journal of Mazandaran University of Medical Sciences, Vol 33, Iss 228, Pp 94-

2023 Volume 103

Abstract: Background and purpose: The prevalence of bacterial infections and the type of bacteria involved in causing endocarditis and knowing their antibiotic resistance pattern are very important for the correct selection of antibiotics to treat these infections ...

Abstract	Background and purpose: The prevalence of bacterial infections and the type of bacteria involved in causing endocarditis and knowing their antibiotic resistance pattern are very important for the correct selection of antibiotics to treat these infections and the proper control of infection in the hospital. In this retrospective cross-sectional descriptive study, we investigated the antibiotic resistance pattern of bacterial agents isolated from blood cultures of patients with infective endocarditis. Materials and methods: This retrospective study was conducted on patients with infective endocarditis admitted to Razi and Fatemeh Zahra teaching hospitals over the four years from 2019 to 2023. After collecting the data, it was entered into Excel software and then analyzed using SPSS version 19 software. Results: Among 28 patients included in the study, 57.1% were men and 42.9% were women; the median age of patients was 56.79±13.41 years. The most common isolated microorganism was Staphylococcus aureus with 11 positive samples (39.2%). Ninety-three percent of the studied microorganisms were resistant to at least two drugs. The result of the treatment was not significantly related to any of the gender, type of valve, and type of isolated microorganism (P=0.624, P=1.000 and P=0.398, respectively). Conclusion: In this study, gram-positive bacteria were the most common group of microorganisms causing infective endocarditis. A high percentage of resistance was observed against some antibiotics including penicillin, ceftazidime, and ceftriaxone, which should be considered in initial empiric antibiotic therapy among hospitalized patients with infective endocarditis
Keywords	antibiotic ; antimicrobial resistance ; bacterial infections ; endocarditis ; Medicine ; R ; Medicine (General) ; R5-920
Subject code	610
Language	English
Publishing date	2023-12-01T00:00:00Z
Publisher	Mazandaran University of Medical Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Calculation of photoneutron contamination of varian linac in icru soft-tissue phantom using MCNPX code

Mojtaba Cheraghian / Tayyeb Pourfallah / Amir Abbas Sabouri-Dodaran / Mehrdad Gholami

Journal of Medical Physics, Vol 46, Iss 2, Pp 116-

2021 Volume 124

Abstract: Purpose: The aim of this research was to calculate the fluence, dose equivalent (DE), and kerma of thermal, epithermal and fast photoneutrons separately, within ICRU soft-tissue-equivalent phantom in the radiotherapy treatment room, using MCNPX Monte ... ...

Abstract	Purpose: The aim of this research was to calculate the fluence, dose equivalent (DE), and kerma of thermal, epithermal and fast photoneutrons separately, within ICRU soft-tissue-equivalent phantom in the radiotherapy treatment room, using MCNPX Monte Carlo code. Materials and Methods: For this purpose, 18 MV Varian Linac 2100 C/D machine was simulated and desired quantities were calculated on the central axis and transverse directions at different depths. Results: Maximum fluence, DE and kerma of total photoneutrons on central axis of the phantom were 43.8 n.cm-2.Gy-1, 0.26, and 3.62 mGy.Gy-1, at depths 2, 0.1, 0.1 cm, respectively. At any depth, average of fluence, DE and kerma in the outer area of the field were less than the inner area and in general were about 72%, 52%, and 45%, respectively. Conclusion: According to this research, within the phantom; variation of fluence, DE and kerma in transverse direction were mild, and along the central axis at shallow area were sharp. DE of fast photoneutrons at shallow and deep areas were one order of magnitude greater than thermal photoneutrons.
Keywords	icru phantom ; mcnpx ; photoneutron contamination ; varian linac ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
Language	English
Publishing date	2021-01-01T00:00:00Z
Publisher	Wolters Kluwer Medknow Publications
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Evaluation of the Presence of Bacterial and Viral Agents in the Semen of Infertile Men

Mehrdad Gholami / Mahmood Moosazadeh / Mohammad Reza Haghshenash / Hamed Jafarpour / Tahoora Mousavi

Frontiers in Medicine, Vol

A Systematic and Meta-Analysis Review Study

2022 Volume 9

Abstract: ObjectivesInfections in the male genitourinary system with bacterial and viral agents may play a significant role in male infertility. These agents usually infect the urethra, seminal vesicles, prostate, epididymis, vas deferens, and testes retrograde ... ...

Abstract	ObjectivesInfections in the male genitourinary system with bacterial and viral agents may play a significant role in male infertility. These agents usually infect the urethra, seminal vesicles, prostate, epididymis, vas deferens, and testes retrograde through the reproductive system. A meta-analysis review study was performed to evaluate the presence of bacterial and viral agents in the semen of infertile men and its correlation with infertility.MethodsRelevant cross-sectional and/or case-control studies were found by an online review of national and international databases (Web of Science, PubMed, Scopus, Science Direct, and Google scholar), and suitable studies were selected. A checklist determined the qualities of all studies. Heterogeneity assay among the primary studies was evaluated by Cochran’s Q test and I2 index (significance level 50%). A statistical analysis was conducted using the Comprehensive Stata ver. 14 package (StataCorp, College Station, TX, United States).ResultsSeventy-two studies were included in this meta-analysis. Publication bias was compared with Egger’s test, and the impact of each research on overall estimate was evaluated by sensitivity analysis. In 56 studies, the rate of bacterial infections in the semen of infertile men was 12% [95% confidence interval (CI): 10–13]. Also, in 26 case-control studies, the association of infertility in men with bacterial infections was evaluated. The results show that the odds ratio of infertility in men exposed to bacterial infections is 3.31 times higher than that in non-infected men (95% CI: 2.60–4.23). Besides, in 9 studies that examined the prevalence of human papillomavirus (HPV), herpes simplex virus 1 (HSV1), herpes simplex virus 2 (HSV2), and herpes simplex virus 1-2 (HSV1-2) in infertile men, the frequency of these viruses was 15% (95% CI: 9–21). In 6 case-control studies, the association between human cytomegalovirus (HCMV), Cytomegalovirus (CMV), and HPV and male infertility was evaluated. The chance of male infertility due to exposure to ...
Keywords	bacteria ; virus ; infection ; semen ; infertility ; Iran ; Medicine (General) ; R5-920
Subject code	630
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A new control strategy for PMSG based wind turbine to improve power smoothing

Mehrdad Gholami / Om-Kolsoom Shahryari

Kurdistan Journal of Applied Research, Vol 2, Iss 3, Pp 356-

2017 Volume 360

Abstract: This paper presents a new simple control strategy for direct driven PMSG wind turbines, using no wind speed sensor. There are several strategies for wind turbine control. Operation of different strategies in terms of power smoothing is compared. New ... ...

Abstract	This paper presents a new simple control strategy for direct driven PMSG wind turbines, using no wind speed sensor. There are several strategies for wind turbine control. Operation of different strategies in terms of power smoothing is compared. New strategy is proposed to have more power smoothing. Performance of the proposed strategy is evaluated by MATLAB/ Simulink simulations and its validity and effectiveness are verified.
Keywords	Permanent magnet synchronous generator (PMSG) ; Power Smoothing ; Wind power fluctuation ; Wind turbine generator (WTG) ; Technology (General) ; T1-995 ; Science ; Q
Language	English
Publishing date	2017-08-01T00:00:00Z
Publisher	Sulaimani Polytechnic University
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: An Estimate of Radiation Dose to the Lens of the Eyes, Parotid Gland, and Thyroid Gland in Dental Panoramic Radiography

Fatemeh Nasrepour / vahid karami / Mehrdad Gholami

Iranian Journal of Medical Physics, Vol 16, Iss 6, Pp 425-

2019 Volume 429

Abstract: Introduction: Dental panoramic radiography (DPR) is one of the most frequent diagnostic X-ray procedures, the application of which is currently on a growing trend. During DPR, several radiosensitive tissues, such as the lens of the eyes, parotid gland, ... ...

Abstract	Introduction: Dental panoramic radiography (DPR) is one of the most frequent diagnostic X-ray procedures, the application of which is currently on a growing trend. During DPR, several radiosensitive tissues, such as the lens of the eyes, parotid gland, and thyroid gland, contribute to the radiation field, and it is necessary to monitor their received dose. The aim of this study was to evaluate the radiation dose to the lens of the eyes, parotid gland, and thyroid gland in patients undergoing DPR at Lorestan Province, Western Iran. Material and Methods: This cross-sectional study was performed on 180 patients of both genders referred to DPR at two most crowded hospitals in Khorramabad, Iran, namely Tamin-e Ejtemaei (TE) and Shohada-ye Ashayer (SA) hospitals. The radiation dose measurements were carried out using LiF (Mg, Cu, P) thermoluminescent dosimeters (TLDs). To measure the absorbed dose received by the lens of the eyes, parotid gland, and thyroid gland in each patient, five sets of three TLDs, wrapped in a thin plastic bag, were positioned over each eyelid and the anatomical position of the parotid and thyroid glands. The TLDs were read within 24 h of exposure. Results: The mean absorbed dose received by the lens of the eyes, parotid gland, and thyroid gland were obtained as 155, 160, and 72 µGy for the TE Hospital, respectively. These values were obtained as l24, 558, and 56 µGy, respectively, for the SA Hospital. The results revealed a statistically significant difference between the organs located outside and inside the primary beam in terms of the absorbed dose (P<0.001). Conclusion: The absorbed dose received by the lens of the eyes and thyroid gland was generally lower than the values reported in similar studies. Nevertheless, the absorbed dose received by the parotid gland in the SA Hospital exceeded the recommended dose reference level of 400 µGy in DPR.
Keywords	absorbed dose ; panoramic radiography ; parotid ; the lens of the eye thyroid ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
Subject code	630
Language	English
Publishing date	2019-11-01T00:00:00Z
Publisher	Mashhad University of Medical Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Addressing as Low as Reasonably Achievable (ALARA) in Pediatric Computed Tomography (CT) Procedures

Vahid Karami / Mehrdad Gholami / Sajjad Lorestani

Journal of Research in Medical and Dental Science, Vol 6, Iss 5, Pp 104-

2018 Volume 114

Abstract: During past three decades, there has been a remarkable increase in the number of patients undergoing computed tomography (CT) procedures. Although CT is a valuable diagnostic tool, its use involves some potential health effects, especially increasing the ...

Abstract	During past three decades, there has been a remarkable increase in the number of patients undergoing computed tomography (CT) procedures. Although CT is a valuable diagnostic tool, its use involves some potential health effects, especially increasing the risk of radiation induced carcinogenesis. Therefore, it is necessary that the patients ‘dose to be kept as low as reasonably achievable (ALARA) and all radiation dose optimization strategies to be applied. The increasing use of CT in the past decades, reports of a significant fraction of patients undergoing multiple CT examinations, as well as the risk of radiation health effects has created a global concern among the scientific and media literatures. Paralleling this, many dose optimization strategies has been developed that needed to be addressed, particularly in pediatric patients. In this review, we have addressed these strategies with focus on pediatric patients to achieve lower doses.
Keywords	Computed tomography ; Radiation risk ; Dose optimization ; Pediatrics ; Dentistry ; RK1-715 ; Medicine (General) ; R5-920
Subject code	610
Language	English
Publishing date	2018-10-01T00:00:00Z
Publisher	Amber Publication
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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