检索结果-南通市图书馆

Safety and efficacy of balloon angioplasty compared to stent-basedstrategies with pulmonary vein stenosis:A systematic review and meta-analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2023年第2期15卷 64-75页

作者： Pradyumna Agasthi Srilekha Sridhara Pattara Rattanawong Nithin Venepally Chieh-Ju Chao Hasan Ashraf Sai Harika Pujari mohamed allam Diana Almader-Douglas Yamini Alla Amit Kumar Farouk Mookadam Douglas L Packer David R Holmes Jr Donald J Hagler Floyd David Fortuin Reza Arsanjani Department of Cardiovascular Diseases Mayo ClinicScottsdaleAZ 85259United States Department of Internal Medicine Banner Heart HospitalMesaAZ 85054United States Library Services Mayo ClinicPhoenixAZ 85054United States Department of Medicine Bronx Lebanon HospitalBronxNY 10457United States Department of Cardiovascular Diseases Mayo ClinicRochesterMN 55905United States

BACKGROUND Pulmonary vein stenosis(PVS)is an uncommon but known cause of morbidity and mortality in adults and children and can be managed with percutaneous revascularization strategies of pulmonary vein balloon angioplasty(PBA)or pulmonary vein stent implantation(PSI).AIM To study the safety and efficacy outcomes of PBA vs PSI in all patient categories with *** We performed a literature search of all studies comparing outcomes of patients evaluated by PBA vs PSI for *** selected all published studies comparing PBA vs PSI for PVS with reported outcomes of restenosis and procedure-related complications in all patient *** adults,PVS following atrial fibrillation ablation and in children PVS related to congenital etiology or post-procedural PVS following total or partial anomalous pulmonary venous return repair were *** patient-centered outcomes were risk of restenosis requiring re-intervention and procedural-related *** metaanalysis was performed by computing odds ratios(ORs)using the random effects model based on underlying statistical *** Eight observational studies treating 768 severe PVS in 487 patients met our inclusion *** age range of patients was 6 months to 70 years and 67%were *** primary outcome of the re-stenosis requiring re-intervention occurred in 196 of 325 veins in the PBA group and 111 of 443 veins in the PSI *** to PSI,PBA was associated with a significantly increased risk of re-stenosis(OR 2.91,95%CI:1.15-7.37,P=0.025,I2=79.2%).Secondary outcomes of the procedurerelated complications occurred in 7 of 122 patients in the PBA group and 6 of 69 in the PSI *** were no statistically significant differences in the safety outcomes between the two groups(OR:0.94,95%CI:0.23-3.76,P=0.929,I^(2)=0.0%).CONCLUSION Across all patient categories with PVS,PSI is associated with reduced risk of re-intervention and is as safe as PBA and should be considered first-line ther

关键词： Pulmonary veins Pulmonary vein stenosis Constriction Balloon angioplasty Stents Drugeluting stents

Prediction of permanent pacemaker implantation after transcatheter aortic valve replacement:The role of machine learning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2023年第3期15卷 95-105页

作者： Pradyumna Agasthi Hasan Ashraf Sai Harika Pujari Marlene Girardo Andrew Tseng Farouk Mookadam Nithin Venepally Matthew R Buras Bishoy Abraham Banveet K Khetarpal mohamed allam Siva K Mulpuru MD Mackram F Eleid Kevin L Greason Nirat Beohar John Sweeney David Fortuin David R Jr Holmes Reza Arsanjani Department of Cardiology Mayo ClinicPhoenixAZ 85054United States Department of Internal Medicine The Brooklyn Hospital CenterBrooklynNY 11201United States Department of Biostatistics Mayo ClinicPhoenixAZ 85054United States Department of Cardiovascular Diseases Mayo ClinicRochesterMN 55905United States Department of Statistics Mayo ClinicPhoenixAZ 85054United States Department of Cardiovascular Surgery Mayo ClinicRochesterMN 55905United States Mount Sinai Medical Center Columbia UniversityMiami BeachFL 33138United States

BACKGROUND Atrioventricular block requiring permanent pacemaker(PPM)implantation is an important complication of transcatheter aortic valve replacement(TAVR).Application of machine learning could potentially be used to predict preprocedural risk for *** To apply machine learning to be used to predict pre-procedural risk for *** A retrospective study of 1200 patients who underwent TAVR(January 2014-December 2017)was performed.964 patients without prior PPM were included for a 30-d analysis and 657 patients without PPM requirement through 30 d were included for a 1-year *** the exclusion of variables with near-zero variance or≥50%missing data,167 variables were included in the random forest gradient boosting algorithm(GBM)optimized using 5-fold cross-validations repeated 10 *** receiver operator curve(ROC)for the GBM model and PPM risk score models were calculated to predict the risk of PPM at 30 d and 1 *** Of 964 patients included in the 30-d analysis without prior PPM,19.6%required PPM *** mean age of patients was 80.9±8.7 years.42.1%were *** 657 patients included in the 1-year analysis,the mean age of the patients was 80.7±*** those,42.6%of patients were female and 26.7%required PPM at 1-year *** area under ROC to predict 30-d and 1-year risk of PPM for the GBM model(0.66 and 0.72)was superior to that of the PPM risk score(0.55 and 0.54)with a P value<*** The GBM model has good discrimination and calibration in identifying patients at high risk of PPM post-TAVR.

关键词： Transcatheter aortic valve replacement Permanent pacemaker implantation Machine learning

Assessment of fish coproducts Sardina pilchardus as the source of lactic acid bacteria

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Coastal Life Medicine 2016年第8期4卷 589-591页

作者： Hamza Belkhodja mohamed allam Fatima Sahnouni Ouardia Boukhari Department of Biology Faculty of Sciences of Nature and LifeUniversity of MascaraMascaraAlgeria

Objective:To recover the waste(edges,heads and guts)of a species of pelagic fish Sardina pilchardus as a source of lactic ***:The microbiological control of the fish waste was carried ***,the fish waste was assessed as a source of bacteria of industrial interest among other lactic *** standard protocol for researches of these microorganisms was adopted which comprised enrichment,isolation,identification,purification and ***:The results of the microbiological control indicated the presence of some species as part of the normal flora of the *** physiological and biochemical characterization has presented 2 different groups of lactic bacteria:Lactobacillus fermentum and Lactobacillus ***:The assessment of fish waste can give us the opportunity to obtain different species of useful bacteria.

关键词： Fish Sardina pilchardus Waste Lactic bacteria

Traumatic facial nerve paralysis dilemma. Decision making and the novel role of endoscope

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Otology 2022年第3期17卷 116-122页

作者： mohamed Elkahwagi Mohammed Abdelbadie Salem Waleed Moneir Hassan allam ORL-HNS Mansoura university Egypt

Objective: The management of traumatic facial nerve paralysis(FNP) has remained a controversial issue with conflicting findings arguing between surgical decompression and conservative ***, recent advances in endoscopic surgery may consolidate the management plan for this ***: This prospective clinical study included patients with posttraumatic FNP at a tertiary referral center. Patients were categorized in two main groups: surgical and conservative. Indications for surgery included patients with immediate and complete FNP, no improvement in facial function on medical treatment, with electroneurography showing >90% degeneration or electromyography showing fibrillation potential. Patients who did not satisfy this criterion received the conservative approach. The transcanal endoscopic approach(TEA) or endoscopic assisted transmastoid approach was performed for facial nerve decompression in the surgical ***: The main outcome was facial function improvement, assessed using the House Brackmann grading scale(HBGS) 6 months after surgery, and hearing state assessed using the air bone gap(ABG).Results: The study included 38 patients, of whom 15 underwent had surgical decompression and 23underwent conservative therapy. A significant improvement in facial nerve function from a mean of4.66 ± 0.97 to 1.71 ± 0.69(P = 0.001) and ABG from a median of 30(10-40) to 20(10-25)(P = 0.002)was ***: Decision-making in cases of traumatic FNP is critical. The geniculate ganglion and tympanic segment were the most commonly affected areas in FNP cases. The TEA represents the most direct and least invasive approach for this area.

关键词： Posttraumatic Facial nerve Decompression Endoscopic Transcanal Electrodiagnostic

Identification of functional tumor necrosis factor-alpha promoter variants associated with Helicobacter pylori infection in the Sudanese population: Computational approach

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2022年第2期28卷 242-262页

作者： Abeer Babiker Idris Alaa B Idris Manal A Gumaa Mohammed Babiker Idris Amanda Elgoraish mohamed Mansour Dalia allam Bashir MO Arbab Nazar Beirag El-Amin M Ibrahim mohamed A Hassan Department of Agricultural Science and Technology Institute of Natural and Applied SciencesErciyes UniversityKayseri 38039Turkey Department of Medical Microbiology Faculty of Medical Laboratory SciencesUniversity of KhartoumKhartoum 11111Sudan Department of Neurosurgery Ribat University HospitalKhartoum 11111Sudan BioMérieux Clinical and Application Advisor Al-Jeel Medical Co.Riyadh 11422Saudi Arabia Department of Epidemiology Tropical Medicine Research InstituteKhartoum 11111Sudan Department of Gastroenterology Ibn Sina Specialized HospitalKhartoum 11111Sudan Department of Gastroenterology Modern Medical CentreKhartoum 11111Sudan Biosciences College of HealthMedicine and Life SciencesBrunel UniversityLondon UB83PHUxbridgeUnited Kingdom Department of Translation Bioinformatics Detavax BiotechKayseri 38350Turkey

BACKGROUND Helicobacter pylori(***)is a ubiquitous bacterium that affects nearly half of the world’s population with a high morbidity and mortality *** within the tumor necrosis factor-alpha(TNF-A)promoter region are considered a possible genetic basis for this *** To functionally characterize the genetic variations in the TNF-A 5’-region(-584 to+107)of Sudanese patients infected with *** using in silico *** An observational study was carried out in major public and private hospitals in Khartoum state.A total of 122 gastric biopsies were taken from patients who had been referred for *** DNA was *** of the TNF-A-1030 polymorphism was performed using PCR with confronting two-pair primer to investigate its association with the susceptibility to *** infection in the Sudanese ***,Sanger sequencing was applied to detect single nucleotide polymorphisms in the 5’-region(-584 to+107)of TNF-A in ***-infected *** analyses were used to predict whether these mutations would alter transcription factor binding sites or composite regulatory elements in this region.A comparative profiling analysis was conducted in 11 species using the ECR browser and multiple-sequence local alignment and visualization search engine to investigate the possible ***,a multivariate logistic regression model was constructed to estimate odds ratios and their 95%confidence intervals for the association between TNF-A-1030,sociodemographic characteristics and *** *** were statistically significant if PA,-76)was located at the in silico-predicted promoter region(-146 to+10),and it was predicted to alter transcription factor b

关键词： 5’-region Promoter TNF-A Helicobacter pylori In silico analysis Sudan

Image-Based Ultrasound Speed Estimation: Phantom and Human Liver Studies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Radiology 2023年第2期13卷 101-112页

作者： Jianfeng Chen Junguo Bian Zuhaib Khokhar mohamed Belal Emad allam Department of Radiology and Medical Imaging Stritch School of Medicine Loyola University Medical Center Chicago Illinois USA

Purpose: A novel image-based method for speed of sound (SoS) estimation is proposed and experimentally validated on a tissue-mimicking ultrasound phantom and normal human liver in vivo using linear and curved array transducers. Methods: When the beamforming SoS settings are adjusted to match the real tissue’s SoS, the ultrasound image at regions of interest will be in focus and the image quality will be optimal. Based on this principle, both a tissue-mimicking ultrasound phantom and normal human liver in vivo were used in this study. Ultrasound image was acquired using different SoS settings in beamforming channels ranging from 1420 m/sec to 1600 m/sec. Two regions of interest (ROIs) were selected. One was in a fully developed speckle region, while the other contained specular reflectors. We evaluated the image quality of these two ROIs in images acquired at different SoS settings in beamforming channels by using the normalized autocorrelation function (ACF) of the image data. The values of the normalized ACF at a specific lag as a function of the SoS setting were computed. Subsequently, the soft tissue’s SoS was determined from the SoS setting at the minimum value of the normalized ACF. Results: The value of the ACF as a function of the SoS setting can be computed for phantom and human liver images. SoS in soft tissue can be determined from the SoS setting at the minimum value of the normalized ACF. The estimation results show that the SoS of the tissue-mimicking phantom is 1460 m/sec, which is consistent with the phantom manufacturer’s specification, and the SoS of the normal human liver is 1540 m/sec, which is within the range of the SoS in a healthy human liver in vivo. Conclusion: Soft tissue’s SoS can be determined by analyzing the normalized ACF of ultrasound images. The method is based on searching for a minimum of the normalized ACF of ultrasound image data with a specific lag among different SoS settings in beamforming channels.

关键词： Ultrasound Image Normalized Autocorrelation Function (ACF) Speed of Sound (SoS)

Sensored and sensorless scalar-control strategy of a wind-driven BDFRG for maximum wind-power extraction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Control and Decision 2018年第2期5卷 209-227页

作者： mohamed G.Mousa S.M.allam Essam M.Rashad Department of Electrical Power and Machines Engineering Faculty of EngineeringTanta UniversityTantaEgypt

This paper presents a scalar volt per hertz(V/f)control technique for maximum power tracking of a grid-connected wind-driven brushless doubly fed reluctance generator(BDFRG).The proposed generator has two stator windings namely;power winding,directly connected to the grid and control winding,connected to the grid through a bi-directional *** order to enhance the performance of the proposed scalar-control strategy,a soft starting method is suggested to avoid the over-current of the bi-directional ***,the capability of generator speed estimation for sensorless control is also *** capability of the proposed scalar-control technique is validated using a sample of simulation *** addition,the presented simulation results ensure the effectiveness of the proposed control strategy for maximum wind-power extraction under windspeed ***,the results show that the estimated generator speed is in a good accordance with the actual generator speed which supports sensorless control capability.

关键词： Brushless doubly fed reluctance generator wind-power generation systems soft starting scalar V/f control maximum windpower extraction speed estimation

Clinico-Epidemiological Characteristics and Survival Outcomes of COVID-19 Infection in Kassala, Eastern Sudan

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Infectious Diseases 2023年第1期13卷 96-108页

作者： Abdualmoniem O. Musa Mushal allam Elhadi A. Ahmed Nouh S. mohamed mohamed H. Ahmed Abubakr Omer Tajeldin M. Abdallah Nadir Abuzeid Department of Microbiology Faculty of Medical Laboratory Sciences University of Kassala Kassala Sudan Department of Microbiology Faculty of Medical Laboratory Sciences University of Gezira Wad Madani Sudan General Administration of Medical Laboratories Ministry of Health Kassala Sudan Department of Genetics and Genomics College of Medicine and Health Sciences United Arab Emirates University Al Ain United Arab Emirates Department of Molecular Biology Faculty of Medical Laboratory Sciences Nile University Khartoum Sudan Department of Medicine and HIV Metabolic Clinic Milton Keynes University Hospital NHS Foundation Trust Milton Keynes UK School of Medical Sciences Örebro University Örebro Sweden Faculty of Medicine University of Khartoum Khartoum Sudan Department of Internal Medicine Faculty of Medicine University of Kassala Kassala Sudan Department of Microbiology Faculty of Medical Laboratory Sciences Omdurman Islamic University Omdurman Sudan

Introduction: Severe acute respiratory syndrome coronavirus2 (SARS-CoV-2) represents a major health problem worldwide. Thus, early detection and appropriate management of the virus will influence the outcome of the disease. This study aimed to investigate the epidemiological characteristics and survival outcomes of patients with COVID-19 infection in Kassala, Eastern Sudan. Methods: A cross-sectional hospital-study was conducted among patients visiting Kassala teaching hospital with suspicion of COVID-19 infection. A structured questionnaire was used to gather clinical and socio-demo- graphic information from COVID-19 patients. Nasopharyngeal specimens and blood samples were collected and tested to confirm the diagnosis of COVID-19 infection using RT-PCR. Results: A total of 371 patients were enrolled in the study from September 2020 to January 2021, with mean age ± SD was 42.9 ± 19.9. The prevalence of COVID-19 infection was estimated at 61.7%. The majority were males 159 (69.4%), of university-level education, 96 (49.7%), and urban residents, 175 (9.7%). The most common symptoms were fever 215 (93.9%), cough 188 (82.1%), headache 179 (78.2%), and shortness of breath 154 (67.2%). Overall all mortality was reported as 16%. Older age group with the age ≥ 70, P P = 0.020, diabetes mellitus P = 0.029 were significantly associated with high case fatality. Conclusion: This study demonstrated that older age, male gender, laboratory tests (leukocytosis, lymphopenia, low Hemoglobin and high CRP) and various comorbid conditions significantly increase the disease severity and mortality. Therefore, attention should be paid to preventive measures to reduce the considerable impacts of the disease.

关键词： COVID-19 Infection Epidemiology Outcome Sudan

Validation of prognostic indices in Egyptian Budd-Chiari syndrome patients: A single-center study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2017年第4期23卷 629-637页

作者： Mohammad Sakr Sara M Abdelhakam Soheir A Elsayed Enas H allam Amir M Farid Waleed Abdelmoaty Azza M Hassan mohamed Shaker mohamed El-Gharib Ahmed Eldorry Department of Tropical Medicine Faculty of MedicineAin Shams University Department of Community Environmental and Occupational MedicineFaculty of MedicineAin Shams University Department of Radiodiagnosis and Interventional Radiology Faculty of MedicineAin Shams University

AIM To compare predictive ability of Budd-Chiari syndrome(BCS) prognostic indices(PIs) for one-year survival and Transjugular intrahepatic portosystemic shunt(TIPS) *** This retrospective study enrolled 194 Egyptian patients with primary BCS who presented to the BuddChiari Study Group of Ain Shams University Hospital. Calculation of the available PIs was performed using Child-Pugh and model for end-stage liver disease scores, BCS-specific PIs(Clichy, New Clichy andRotterdam) for all patients, and BCS-TIPS PI only for patients who underwent TIPS. The overall one-year survival rate and the one-year shunt patency rate for TIPS were *** The overall one-year survival rate was 69.6%, and the New Clichy PI revealed the best validity for its prediction at a cut-off value of 3.75, with sensitivity and specificity of 78% and 73.3%, respectively [area under receiver operating characteristic curve(AUC) = 0.806]. The one-year survival rate post-TIPS was 89.7%, and the BCS-TIPS score demonstrated validity for its prediction at a cut-off value of 3.92(sensitivity and specificity were 71.4% and 64.5%, respectively)(AUC = 0.715). Logistic regression analysis revealed that the New Clichy PI(P = 0.030), high serum total bilirubin(P = 0.047) and low albumin(P < 0.001) were independent factors for predicting mortality within one year. The one-year shunt patency rate in TIPS was 80.2%, and none of the PIs exhibited significant validity for its prediction. CONCLUSION The New Clichy score could independently predict the one-year survival in Egyptian BCS patients.

关键词： Budd-Chiari 症候群预示的索引新 Clichy 分数一个年幸存 Transjugular intrahepatic portosystemic 分流