Original Article
Applied Chemistry
Ebadollah Amouzad Mahdiraji
Abstract
High and low voltage cables are among the most frequently utilized pieces of equipment in the power system and are subject to a variety of problems for a number of different causes. In spite of their increased reliability in airways, cables, whether power or distribution cables, are typically transported ...
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High and low voltage cables are among the most frequently utilized pieces of equipment in the power system and are subject to a variety of problems for a number of different causes. In spite of their increased reliability in airways, cables, whether power or distribution cables, are typically transported underground. As a result, they are more difficult to repair and may even need to be replaced in the event of a fault; for this reason, it is crucial to locate the fault as soon as possible. As is obvious from the research's title, the Fourier transform and modal transform methods are employed in this work to determine the kind and position of faults. This allows us to assess how effective the chosen method is at identifying and finding faults in subsurface infrastructure. The Fourier transform method, followed by the Modal transform, is anticipated to have a significant advantage in this study in terms of speed and accuracy when identifying the kind and location of defects. The nature and position of the defect are identified in the meanwhile using the detection and location indicators, which, according to simulations, will operate effectively. To show that these methods are accurate, the sample model is simulated. The exact and quick performance of the suggested strategy is confirmed by the simulation results from the MATLAB and EMTP/ATP software.
Review Article
Medicine
Parham Maroufi; Mahdi Nazari
Abstract
Introduction: This systematic review aims to evaluate the analgesic effect of intravenous dexamethasone in patients undergoing volar plate surgery for distal radius fractures. The findings of this review will provide valuable insights into the potential role of dexamethasone as an adjunctive analgesic ...
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Introduction: This systematic review aims to evaluate the analgesic effect of intravenous dexamethasone in patients undergoing volar plate surgery for distal radius fractures. The findings of this review will provide valuable insights into the potential role of dexamethasone as an adjunctive analgesic agent in this surgical setting. By synthesizing the available evidence, this review aims to contribute to the existing literature and guide clinical decision-making regarding postoperative pain management strategies. Material and Methods: Data extraction was performed independently by two reviewers using a standardized data extraction form. The following information was collected: study characteristics (author, year of publication, study design), patient demographics (sample size, age, sex), surgical details (type of volar plate surgery, anesthesia technique), intervention details (dose, timing, and duration of intravenous dexamethasone administration), control group characteristics, outcome measures, and relevant results. Any discrepancies were resolved through discussion and consensus. Results: The primary outcome measure assessed in the included studies was postoperative pain intensity. Pain intensity scores were evaluated using various validated pain rating scales, including the visual analog scale (VAS) and numerical rating scale (NRS). Secondary outcome measures included postoperative opioid consumption, time to first analgesic request, duration of analgesic effect, adverse effects related to dexamethasone administration, and patient satisfaction scores. Conclusion: this systematic review provides evidence supporting the analgesic effect of intravenous dexamethasone following volar plate surgery for distal radius fractures. Dexamethasone effectively reduces postoperative pain intensity, opioid consumption, and the need for rescue analgesia. The sustained analgesic effect and favorable safety profile make dexamethasone a promising adjunctive analgesic in this surgical setting.
Short Communication
Medicine
Ali Sharifi; Abbasali Dehghani
Abstract
Introduction: Gastrectomy plays a central role in the management of gastric cancer, and its short-term outcomes have significant implications for patient care and treatment decisions. Surgical morbidity, postoperative recovery, length of hospital stays, and the impact of minimally invasive techniques ...
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Introduction: Gastrectomy plays a central role in the management of gastric cancer, and its short-term outcomes have significant implications for patient care and treatment decisions. Surgical morbidity, postoperative recovery, length of hospital stays, and the impact of minimally invasive techniques and lymph node dissection are all critical factors to consider.Material and Methods: This study aimed to investigate the short-term outcomes of gastrectomy for patients with gastric cancer. A retrospective cohort study design was employed to analyze data from a single-center database. The study period spanned from 2019 to 2020.Results: Subgroup analyses were conducted to identify factors associated with surgical morbidity. Multivariable logistic regression analysis revealed that advanced tumor stage (2.25 95% CI, 2.11-3.19), open surgical approach (5.51 95% CI: 4.88-7.19), and a higher Clavien-Dindo classification (5.595% CI: 5-12.3) were independent predictors of surgical morbidity. These findings highlight the importance of early detection and management of complications, as well as the potential benefits of minimally invasive techniques in reducing surgical morbidity (fig 3).Conclusion: In conclusion, the study on short-term outcomes of gastrectomy in patients with gastric cancer provides valuable insights into the potential risks and benefits associated with the surgical procedure. It emphasizes the need for careful patient selection, meticulous surgical techniques, and comprehensive postoperative care to optimize outcomes and enhance patient satisfaction. Further research is warranted to explore long-term oncological outcomes and survival to provide a more comprehensive understanding of the overall impact of gastrectomy in the treatment of gastric cancer.
Review Article
Medicine
Mohammad Reza Moharrami; Mahdi Nazari
Abstract
Introduction: This systematic review aims to compare the efficacy and safety of low-dose intravenous ketamine-midazolam with intravenous morphine for pain control in patients with hand fractures. By synthesizing the available evidence, we seek to provide clinicians with valuable insights into the potential ...
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Introduction: This systematic review aims to compare the efficacy and safety of low-dose intravenous ketamine-midazolam with intravenous morphine for pain control in patients with hand fractures. By synthesizing the available evidence, we seek to provide clinicians with valuable insights into the potential benefits and limitations of these analgesic strategies, aiding in informed decision-making for optimal pain management in this patient population. Material and Methods: This systematic review follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to ensure transparency and methodological rigor in the review process. Results: The primary outcome of pain control was assessed using various pain scales, including the Visual Analog Scale (VAS) and Numeric Rating Scale (NRS). The majority of studies reported comparable pain control between low-dose ketamine-midazolam and intravenous morphine. Both analgesic regimens resulted in significant pain reduction. A subset of studies demonstrated that low-dose ketamine-midazolam provided superior pain control compared to intravenous morphine, particularly in the immediate post-intervention period. However, the overall evidence regarding the superiority of one regimen over the other was inconclusive due to variations in study designs, sample sizes, and outcome measures. Conclusion: Low-dose intravenous ketamine-midazolam and intravenous morphine are both effective analgesic regimens for pain control in patients with hand fractures. While the evidence regarding the superiority of one regimen over the other remains inconclusive, low-dose ketamine-midazolam appears to offer comparable pain control with reduced opioid consumption anda favorable safety profile.
Original Article
Medicine
Saeid Charsouei; Mohsen Mohammadrahimi
Abstract
Introduction: Neuropathic post-surgical pain (NPSP) is a debilitating condition that can occur following surgical procedures, including radical prostatectomy. Preoperative pain has emerged as a potential risk factor for the development of NPSP, suggesting that early identification and management of preoperative ...
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Introduction: Neuropathic post-surgical pain (NPSP) is a debilitating condition that can occur following surgical procedures, including radical prostatectomy. Preoperative pain has emerged as a potential risk factor for the development of NPSP, suggesting that early identification and management of preoperative pain may play a crucial role in preventing NPSP. This study aimed to investigate the association between preoperative pain and NPSP following radical prostatectomy, providing valuable insights into the pathophysiology and prevention of NPSP. Material and Methods: Following surgery, participants were followed up for a period of six months to assess the development of NPSP. Postoperative pain assessments were conducted at regular intervals, including one week, one month, three months, and six months after surgery. Pain intensity was evaluated using the NRS, and pain characteristics were assessed using validated neuropathic pain assessment tools, such as the Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) and the Douleur Neuropathique 4 Questions (DN4) questionnaire. Results: Functional impairment and quality of life were also significantly affected in patients with NPSP. The BPI interference scores, which measure the impact of pain on daily activities, were significantly higher in the NPSP group compared to the non-NPSP group at all follow-up time points (p < 0.001). Similarly, the EuroQol-5D questionnaire, which assesses health-related quality of life, revealed lower scores in the NPSP group, indicating poorer overall well-being (p < 0.001). Conclusion: this study highlights the significance of preoperative pain as a risk factor for the development of NPSP following radical prostatectomy. Patients with preoperative pain are at a significantly higher risk of experiencing NPSP, which is associated with higher pain intensity, functional impairment, and decreased quality of life. Efforts should be made to implement preoperative pain assessment protocols and optimize pain management strategies to minimize the risk of NPSP and improve postoperative outcomes.
Original Article
Medicine
Ali Sharifi; Fariborz Rousta
Abstract
Introduction: Post-thyroidectomy hypocalcemia is a significant complication that can occur following thyroid surgery. Patient-related factors, surgical factors, and pathological factors contribute to the development of hypocalcemia. Prompt recognition, appropriate management, and preventive measures ...
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Introduction: Post-thyroidectomy hypocalcemia is a significant complication that can occur following thyroid surgery. Patient-related factors, surgical factors, and pathological factors contribute to the development of hypocalcemia. Prompt recognition, appropriate management, and preventive measures are essential to minimize the occurrence of hypocalcemia and its associated complications.Material and Methods: This article aimed to investigate the risk factors associated with post-thyroidectomy hypocalcemia. A retrospective cohort study design was employed to analyze data from patients who underwent thyroidectomy at a single institution. The study period spanned from January 2018 to December 2020. The study protocol was approved by the Institutional Review Board (IRB) of the institution.Results: In the univariate logistic regression analysis, several risk factors were significantly associated with an increased risk of post-thyroidectomy hypocalcemia. Advanced age was found to be a significant predictor, with patients aged 60 years or older having a higher risk compared to younger individuals (OR 2.4, 95% CI 1.5-3.8, p<0.001). Female gender was also associated with an increased risk of hypocalcemia (OR 1.8, 95% CI 1.2-2.7, p=0.005)Conclusion: this study identified several risk factors associated with post-thyroidectomy hypocalcemia, including advanced age, female gender, lower preoperative calcium levels, total thyroidectomy, presence of thyroid cancer, and extensive thyroid gland involvement. These findings can aid in preoperative risk stratification, surgical planning, and patient counseling.
Original Article
Medicine
Ali Sharifi; Abbasali Dehghani
Abstract
Introduction: The outcomes after esophagectomy have transformed the management of esophageal pathologies. esophagectomy has revolutionized the field of esophageal surgery by providing patients with less postoperative pain, reduced complications, faster recovery, and improved functional and oncological ...
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Introduction: The outcomes after esophagectomy have transformed the management of esophageal pathologies. esophagectomy has revolutionized the field of esophageal surgery by providing patients with less postoperative pain, reduced complications, faster recovery, and improved functional and oncological outcomes. As surgical techniques continue to evolve, esophagectomy represents a paradigm shift in the approach to esophageal surgery, paving the way for future advancements and improved patient care.Material and Methods: This article utilizes a retrospective study design to assess the outcomes after esophagectomy. The study involved analyzing medical records and data from patients who underwent esophagectomy at a single institution between a specified period. The study aimed to evaluate various outcome measures, including postoperative pain, complications, length of hospital stay, pulmonary function, gastrointestinal complications, and oncological outcomes.Results: The outcomes after esophagectomy demonstrated several favorable results compared to traditional open esophagectomy. Postoperative pain scores were significantly lower in the esophagectomy group, with a mean visual analog scale (VAS) score of 3.5 (range: 1-7) compared to 6.8 (range: 4-9) in the open surgery group (p < 0.001). This reduction in pain allowed for earlier initiation of oral intake, with a median time to resumption of oral intake of 3 days in the esophagectomy group compared to 7 days in the open surgery group (p < 0.001).Conclusion: In conclusion, this study highlights the favorable outcomes after esophagectomy and emphasizes its potential as a pioneering surgical technique in the field of esophageal surgery. esophagectomy offers several advantages over traditional open surgery, including reduced postoperative pain, shorter hospital stays, improved pulmonary function, and decreased rates of gastrointestinal complications.
Original Article
Medicine
Sanaz Yasrebinia; Mansour Rezaei
Abstract
Introduction: This study aiming to provide vital insights into the potential impacts of these treatment modalities (morphine or methadone) on the neurodevelopmental trajectories of Neonatal Abstinence Syndrome (NAS) -affected infants. By investigating the potential disparities in neurodevelopmental outcomes ...
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Introduction: This study aiming to provide vital insights into the potential impacts of these treatment modalities (morphine or methadone) on the neurodevelopmental trajectories of Neonatal Abstinence Syndrome (NAS) -affected infants. By investigating the potential disparities in neurodevelopmental outcomes associated with morphine and methadone, we aspire to inform evidence-based treatment decisions and refine the standard of care for NAS.Material and Methods: Eight participating locations included 116 full-term newborns diagnosed with NAS, born to mothers under methadone or buprenorphine maintenance, who were enrolled in a randomized trial comparing morphine to methadone. Upon hospital discharge, 99 of these infants (representing 85% of the cohort) underwent assessment using the NICU Network Neurobehavioral Scale (NNNS). At the 18-month mark, 83 out of the 99 infants (approximately 83.8%) underwent evaluation employing the Bayley Scales of Infant and Toddler Development-Third Edition (Bayley-III), while the Child Behavior Checklist (CBCL) was administered to 77 of the 99 infants (around 77.7%).Results: Our adjusted analyses further revealed that internalizing and total behavior problems were linked to the utilization of phenobarbital (p=0.03 and p=0.04, respectively), elevated levels of maternal psychological distress (as measured by the Brief Symptom Inventory) (both p<0.01), and the presence of infant medical issues (both p=0.02). Additionally, externalizing problems were associated with maternal psychological distress (p<0.01) and continued maternal substance use (p<0.01).Conclusion: Neonates administered either morphine or methadone exhibited comparable neurobehavioral outcomes in both the short and long term. The neurodevelopmental progress of these infants may be associated with factors such as the requirement for phenobarbital, the general health of the infant, and the quality of postnatal caregiving.
Review Article
Medicine
Sanaz Yasrebinia; Mansour Rezaei
Abstract
Introduction: As the global community strives to ensure the health and well-being of mothers and newborns, AI emerges as a powerful ally in this noble endeavor. Through this systematic review, we seek to provide a comprehensive overview of the state of AI-driven mortality prediction, offering insights ...
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Introduction: As the global community strives to ensure the health and well-being of mothers and newborns, AI emerges as a powerful ally in this noble endeavor. Through this systematic review, we seek to provide a comprehensive overview of the state of AI-driven mortality prediction, offering insights that may shape the future of maternal and neonatal healthcare and bring us closer to the goal of ensuring safe pregnancies and healthy beginnings for all. Material and methods: We systematically reviewed the literature, restricting our search to publications from the past decade, and utilized the five major scientific databases as primary sources. Results: Out of the initial pool of 671 works, a total of 18 primary studies were meticulously chosen for in-depth analysis. It was evident that a predominant focus of these studies revolved around the prediction of neonatal mortality, predominantly employing machine learning models, with Random Forest being a popular choice. The top five frequently utilized features for model training encompassed birth weight, gestational age, the child's gender, Apgar score, and the mother's age. The development of predictive models for mitigating mortality during and after pregnancy holds immense potential, not only for enhancing the quality of life for mothers but also as a potent and cost-effective tool for reducing mortality rates. Conclusion: Drawing from the findings of this systematic review, it becomes evident that substantial scientific endeavors have been undertaken in this domain. However, it is equally apparent that numerous unexplored research avenues and opportunities await further exploration within the research community.
Original Article
Medicine
Ali Sharifi; Zhale Bakhtiari
Abstract
Introduction: A comprehensive understanding of these complications, their risk factors, and appropriate management strategies is essential for surgeons and healthcare providers involved in the care of patients undergoing pancreaticoduodenectomy. Continued research, advancements in surgical techniques, ...
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Introduction: A comprehensive understanding of these complications, their risk factors, and appropriate management strategies is essential for surgeons and healthcare providers involved in the care of patients undergoing pancreaticoduodenectomy. Continued research, advancements in surgical techniques, and multidisciplinary collaboration are needed to further improve outcomes and reduce the incidence of complications following this challenging surgical procedure.Material and Methods: This article was a retrospective observational study conducted to evaluate the incidence, clinical significance, and management of complications associated with pancreaticoduodenectomy. The study aimed to analyze a cohort of patients who underwent pancreaticoduodenectomy at a single institution over a specified period.Results: Several factors were found to be associated with the occurrence of complications following pancreaticoduodenectomy. Prolonged operative time (>6 hours) was significantly associated with an increased risk of pancreatic fistula (p=0.043) and postoperative hemorrhage (p=0.018). Intraoperative blood loss (>500 mL) was also associated with a higher incidence of postoperative hemorrhage (p=0.032). Patients with preoperative comorbidities, such as diabetes and cardiovascular disease, had a higher risk of developing postoperative infections (p=0.016 and p=0.023, respectively).Conclusion: Complications following pancreaticoduodenectomy remain a significant challenge despite advancements in surgical techniques and perioperative care. Pancreatic fistula, delayed gastric emptying, postoperative hemorrhage, and biliary complications are among the most common complications observed in this study.
Review Article
Covid
Nina Pilehvar; Mansour Rezaei
Abstract
Intraoperative neuro-monitoring (IONM) is a crucial technique employed in neurosurgery to assess and preserve the functional integrity of the nervous system during surgical procedures. This scoping review aims to explore and summarize the existing literature on the utility of IONM in neurosurgery, focusing ...
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Intraoperative neuro-monitoring (IONM) is a crucial technique employed in neurosurgery to assess and preserve the functional integrity of the nervous system during surgical procedures. This scoping review aims to explore and summarize the existing literature on the utility of IONM in neurosurgery, focusing on its benefits, limitations, and current advancements. A comprehensive search of electronic databases was conducted, and relevant studies published between 2010 and 2023 were included. The review encompassed a wide range of neurosurgical procedures, including spinal, cranial, and peripheral nerve surgeries. The included studies predominantly focused on the application of various IONM modalities, such as somatosensory evoked potentials (SSEPs), motor-evoked potentials (MEPs), electromyography (EMG), electroencephalography (EEG), and brainstem auditory evoked potentials (BAEPs). The findings of this scoping review highlight the utility of IONM across different neurosurgical procedures. The use of IONM was consistently associated with a reduction in the incidence of postoperative neurological deficits, aiding in the prevention of nerve injuries and subsequent functional impairments. Furthermore, IONM was found to assist in identifying and localizing neural structures, guiding surgical approaches, and optimizing patient outcomes.
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