1,718 results match your criteria rvf


Tricuspid valve repair and mechanical right ventricular support in rescue left ventricular assist device implantations: Still a relevant issue.

Authors:
Antonio Loforte

J Card Surg 2022 Jan 25. Epub 2022 Jan 25.

Division of Cardiac Surgery, S. Orsola University Hospital, ALMA Mater Studiorum University of Bologna, IRCCS Bologna, Bologna, Italy.

Right ventricular failure (RVF) remains the main cause of morbidity and mortality following the implantation of continuous flow (CF) left ventricular assist devices. Apart from the difficulties inherent in assessing right ventricular function, other factors that may confound the prediction of RVF intraoperative events include concomitant surgical procedures, postoperative changes in pulmonary hemodynamics, evolving mechanical circulatory support (MCS) technology, shifts in the target population, and device settings. In this commentary, the role of concomitant tricuspid valve repair, early planned temporary or durable MCS have been discussed. Read More

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January 2022

Assessment of the control measures of the category A diseases of Animal Health Law: Rift Valley Fever.

EFSA J 2022 Jan 19;20(1):e07070. Epub 2022 Jan 19.

EFSA received a mandate from the European Commission to assess the effectiveness of some of the control measures against diseases included in the Category A list according to Regulation (EU) 2016/429 on transmissible animal diseases ('Animal Health Law'). This opinion belongs to a series of opinions where these control measures were assessed for several diseases, with this opinion covering the assessment of control measures for Rift Valley Fever (RVF). In this opinion, EFSA and the AHAW Panel of experts review the effectiveness of: (i) clinical and laboratory sampling procedures, (ii) monitoring period and (iii) the minimum radius of the protection and surveillance zone and the minimum length of time the measures should be applied in these zones. Read More

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January 2022

Paving the way for human vaccination against Rift Valley fever virus: A systematic literature review of RVFV epidemiology from 1999 to 2021.

PLoS Negl Trop Dis 2022 Jan 24;16(1):e0009852. Epub 2022 Jan 24.

Center for Global Health and Diseases, Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America.

Background: Rift Valley fever virus (RVFV) is a lethal threat to humans and livestock in many parts of Africa, the Arabian Peninsula, and the Indian Ocean. This systematic review's objective was to consolidate understanding of RVFV epidemiology during 1999-2021 and highlight knowledge gaps relevant to plans for human vaccine trials.

Methodology/principal Findings: The review is registered with PROSPERO (CRD42020221622). Read More

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January 2022

Rectovaginal Fistula in Crohn's Disease: When and How to Operate?

Clin Colon Rectal Surg 2022 Jan 17;35(1):10-20. Epub 2022 Jan 17.

Cambridge Colorectal Unit, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom.

Rectovaginal fistula (RVF) occurring during the course of Crohn's disease (CD) constitutes a therapeutic challenge and is characterized by a high rate of recurrence. To optimize the outcome of CD-related RVF repair, the best conditions for correct healing should be obtained. Remission of CD should be achieved with no active proctitis, the perianal CD activity should be minimized, and local septic complications should be controlled. Read More

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January 2022

Tilorone-Dihydrochloride Protects against Rift Valley Fever Virus Infection and Disease in the Mouse Model.

Microorganisms 2021 Dec 31;10(1). Epub 2021 Dec 31.

Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.

Rift Valley fever (RVF) is a mosquito-borne zoonotic disease endemic to Africa and the Middle East that can affect humans and ruminant livestock. Currently, there are no approved vaccines or therapeutics for the treatment of severe RVF disease in humans. Tilorone-dihydrochloride (Tilorone) is a broad-spectrum antiviral candidate that has previously shown efficacy against a wide range of DNA and RNA viruses, and which is clinically utilized for the treatment of respiratory infections in Russia and other Eastern European countries. Read More

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December 2021

Identification and distribution of pathogens coinfecting with Brucella spp., Coxiella burnetii and Rift Valley fever virus in humans, livestock and wildlife.

Zoonoses Public Health 2022 Jan 15. Epub 2022 Jan 15.

Biosecurity and Public Health, Los Alamos National Laboratory, Los Alamos, NM, USA.

Zoonotic diseases, such as brucellosis, Q fever and Rift Valley fever (RVF) caused by Brucella spp., Coxiella burnetii and RVF virus, respectively, can have devastating effects on human, livestock, and wildlife health and cause economic hardship due to morbidity and mortality in livestock. Coinfection with multiple pathogens can lead to more severe disease outcomes and altered transmission dynamics. Read More

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January 2022

Terminal T-wave inversion predicts reperfusion tachyarrhythmias in STEMI.

J Electrocardiol 2022 Jan 5;71:28-31. Epub 2022 Jan 5.

Department of Cardiology, Clinical Sciences, Lund University, Lund, Sweden; Arrhythmia Clinic, Skåne University Hospital, 22185 Lund, Sweden.

Introduction: A reliable electrocardiographic predictor of ventricular fibrillation (VF) in patients with ST elevation myocardial infarction (STEMI) is lacking so far. Previous experimental/simulation study suggested a terminal T-wave inversion (TTWI) in ischemia-related ECG leads corresponding to anterior infarct localization as an independent predictor of reperfusion VF (rVF). This T-wave characteristic has never been tested as a rVF predictor in clinical settings. Read More

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January 2022

Rift Valley fever during the COVID-19 pandemic in Africa: A double burden for Africa's healthcare system.

Health Sci Rep 2022 Mar 6;5(1):e468. Epub 2022 Jan 6.

School of Chemical Engineering University of Birmingham Birmingham UK.

A new rising incidence of Rift Valley fever (RVF) among livestock and humans in the African continent during the COVID-19 pandemic has become of increasing concern. We analyzed the different ways COVID-19 has contributed to the increase in RVF cases and how it has impacted the interventions allocated to the disease by comparing it with the status of the disease before the pandemic. There is enough evidence to conclude that the COVID-19 pandemic has impacted the efforts being taken to prevent outbreaks of RVF. Read More

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Co-circulation of and Rift Valley Fever Virus in Mauritania, 2015.

Front Microbiol 2021 24;12:766977. Epub 2021 Dec 24.

Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany.

Ngari virus (NRIV) has been mostly detected during concurrent outbreaks of Rift Valley fever virus (RVFV). NRIV is grouped in the genus within the family and RVFV in the genus in the family . Both are zoonotic arboviruses and can induce hemorrhagic fever displaying the same clinical picture in humans and small ruminants. Read More

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December 2021

Safety, Immunogenicity and Antibody Persistence of Rift Valley Fever Virus Clone 13 Vaccine in Sheep, Goats and Cattle in Tanzania.

Front Vet Sci 2021 17;8:779858. Epub 2021 Dec 17.

Global Alliance for Livestock Veterinary Medicines, Edinburgh, United Kingdom.

Vaccination is considered to be the best approach to control Rift Valley fever (RVF) in animals and consequently in humans. This study assessed the efficacy and safety of the RVF virus (RVFV) Clone 13 vaccine under field conditions. A vaccine trial was conducted in sheep (230), goats (230), and cattle (140) in Ngorongoro district, Tanzania. Read More

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December 2021

Late-onset right ventricular failure after continuous-flow left ventricular assist device implantation: case presentation and review of the literature.

J Cardiol 2021 Dec 30. Epub 2021 Dec 30.

Department of Cardiac Surgery, The University of Tokyo Hospital, Tokyo, Japan.

With the widespread use of implantable left ventricular assist device (LVAD), right ventricular failure (RVF) has become a serious problem that becomes apparent several weeks or later after LVAD implantation. However, there are no marked preoperative signs of RVF. This is called late-onset RVF and is currently a major problem leading to long-term complications following implantable LVAD use. Read More

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December 2021

Genetic Characterization of Rift Valley Fever Virus in Insectivorous Bats, Egypt.

Vector Borne Zoonotic Dis 2021 12;21(12):1003-1006

Department of Virology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt.

The endemic character of Rift Valley fever (RVF) disease points toward an interepidemic reservoir. Although not yet identified, bats and rodents may be implicated in RVF virus (RVFV) epidemiology. In this study, we investigated the putative role of Egyptian frugivorous and insectivorous bats in RVFV epidemiology in Egypt. Read More

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December 2021

Exosomes originating from infection with the cytoplasmic single-stranded RNA virus Rift Valley fever virus (RVFV) protect recipient cells by inducing RIG-I mediated IFN-B response that leads to activation of autophagy.

Cell Biosci 2021 Dec 25;11(1):220. Epub 2021 Dec 25.

School of Systems Biology, George Mason University, Manassas, VA, USA.

Background: Although multiple studies have demonstrated a role for exosomes during virus infections, our understanding of the mechanisms by which exosome exchange regulates immune response during viral infections and affects viral pathogenesis is still in its infancy. In particular, very little is known for cytoplasmic single-stranded RNA viruses such as SARS-CoV-2 and Rift Valley fever virus (RVFV). We have used RVFV infection as a model for cytoplasmic single-stranded RNA viruses to address this gap in knowledge. Read More

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December 2021

A Rare Cause of Rectovaginal Fistula in Early Infancy: It is in the Genes!

J Indian Assoc Pediatr Surg 2021 Nov-Dec;26(6):442-444. Epub 2021 Nov 12.

Department of Pediatric Hemato-oncology, Apollo Children's Hospital Chennai, Tamil Nadu, India.

Acquired Rectovaginal Fistula (RVF) is rare in infants. Interleukin10/ Interleukin 10 receptor deficiencies are monogenic disorders presenting as aggressive forms of infantile onset inflammatory bowel disease with perianal abscess and fistula. Genetic studies assist in confirming the diagnosis. Read More

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November 2021

Right ventricular functional assessment by 2D multi-plane echocardiography prior to left ventricular assist device implantation.

Echocardiography 2022 Jan 8;39(1):7-19. Epub 2021 Dec 8.

Thoraxcenter, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.

Objectives: Right ventricular (RV) failure post left ventricular assist device (LVAD) implantation is associated with increased morbidity and mortality. A novel RV multi-plane imaging method using two-dimensional echocardiography and electronic plane rotation (MPE) was used to quantify RV function prior to LVAD implantation and to identify potential added value in this patient population.

Methods: In twenty-five end-stage heart failure patients (age 58. Read More

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January 2022

Laparoscopic-Assisted Anorectoplasty for Rectovestibular Fistula: A Comparison Study with Anterior Sagittal Anorectoplasty.

Eur J Pediatr Surg 2021 Dec 1. Epub 2021 Dec 1.

Department of Pediatric Surgery, Capital Institute of Pediatrics, No. 2 Yabao Road, Chaoyang District, Beijing, People's Republic of China.

Background:  Posterior or anterior sagittal anorectoplasty (ASARP) is the mainstream for correcting rectovestibular fistula (RVF). However, the intermediate RVF has the potential risk of wound complications when applying ASARP due to its high rectal pouch, long fistula tract, and difficulty separating the rectum and vagina. We developed laparoscopic-assisted anorectoplasty (LAARP) for surgical correction of RVF, which has acceptable preliminary outcomes. Read More

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December 2021

Rift Valley Fever Virus Propagates in Human Villous Trophoblast Cell Lines and Induces Cytokine mRNA Responses Known to Provoke Miscarriage.

Viruses 2021 11 12;13(11). Epub 2021 Nov 12.

Department of Clinical Microbiology, Umeå University, 901 85 Umeå, Sweden.

The mosquito-borne Rift Valley fever (RVF) is a prioritised disease that has been listed by the World Health Organization for urgent research and development of counteraction. Rift Valley fever virus (RVFV) can cause a cytopathogenic effect in the infected cell and induce hyperimmune responses that contribute to pathogenesis. In livestock, the consequences of RVFV infection vary from mild symptoms to abortion. Read More

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November 2021

The Effects of Sit-to-Stand Training Combined with Real-Time Visual Feedback on Strength, Balance, Gait Ability, and Quality of Life in Patients with Stroke: A Randomized Controlled Trial.

Int J Environ Res Public Health 2021 11 21;18(22). Epub 2021 Nov 21.

Department of Physical Therapy, Sahmyook University, Seoul 01795, Korea.

This study aimed to investigate the effects of lower limbs muscles' strength, balance, walking, and quality of life through sit-to-stand training combined with real-time visual feedback (RVF-STS group) in patients with stroke and to compare the effects of classic sit-to-stand training (C-STS group). Thirty patients with stroke were randomly divided into two groups. The RVF-STS group received sit-to-stand training combined with real-time visual feedback using a Wii Balance Board ( = 15), and the C-STS group received classic sit-to-stand training ( = 15). Read More

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November 2021

Right ventricular failure: a comorbidity or a clinical emergency?

Heart Fail Rev 2021 Nov 26. Epub 2021 Nov 26.

Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Kolkata, Chunilal Bhawan, 168 Maniktala Main Road, Kolkata, 700054, West Bengal, India.

There has been ample data providing a convincing perception about the underlying mechanism pertaining to left ventricle (LV) hypertrophy progressing towards LV failure. In comparison, data available on the feedback of right ventricle (RV) due to volume or pressure overload is minimal. Advanced imaging techniques have aided the study of physiology, anatomy, and diseased state of RV. Read More

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November 2021

Risk factors for Rift Valley fever virus seropositivity in one-humped camels () and pastoralist knowledge and practices in Northern Nigeria.

One Health 2021 Dec 9;13:100340. Epub 2021 Nov 9.

Center for Blood Research and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada.

Rift Valley fever (RVF) is a complex emerging arboviral hemorrhagic disease that causes significant illness in animals and humans. Camel trade across the land borders between Nigeria and the Niger Republic occurs frequently and poses a significant risk for RVF transmission to pastoralists and traders. We carried a cross-sectional study between November 2016 and April 2017 in two northern States (Katsina and Jigawa) known for camel trade in Nigeria to investigate the seroprevalence and potential risk factors for RVFV occurrence. Read More

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December 2021

A Case of Rectovesical Fistula Following Blunt Trauma in a Child.

Cureus 2021 Oct 20;13(10):e18931. Epub 2021 Oct 20.

General Surgery, Siddhartha Medical College, Vijayawada, IND.

Rectovesical fistulae (RVF) are uncommon entities and usually occur after surgery for prostate, radiation, and sometimes due to penetrating trauma. However, RVF occurrence after blunt trauma to the abdomen or perineum is very rare. The management of RVF is challenging, and treatment options should be considered according to the individual. Read More

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October 2021

A multi-institutional retrospective analysis on impact of RV acute mechanical support timing after LVAD implantation on 1-year mortality and predictors of RV acute mechanical support weaning.

J Heart Lung Transplant 2021 Oct 25. Epub 2021 Oct 25.

Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas. Electronic address:

Background: There is little insight into which patients can be weaned off right ventricular (RV) acute mechanical circulatory support (AMCS) after left ventricular assist device (LVAD) implantation. We hypothesize that concomitant RV AMCS insertion instead of postoperative implantation will improve 1-year survival and increase the likelihood of RV AMCS weaning.

Methods: A multicenter retrospective database of 826 consecutive patients who received a HeartMate II or HVAD between January 2007 and December 2016 was analyzed. Read More

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October 2021

Structure of Rift Valley fever virus RNA-dependent RNA polymerase.

J Virol 2021 Nov 17:JVI0171321. Epub 2021 Nov 17.

State Key Laboratory of Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China, 100193.

Rift Valley fever virus (RVFV) belongs to the order and is the type species of genus , which accounts for over 50% of family species. RVFV is mosquito-borne and causes severe diseases in both humans and livestock, and consists of three segments (S, M, L) in the genome. The L segment encodes an RNA-dependent RNA polymerase (RdRp, L protein) that is responsible for facilitating the replication and transcription of the virus. Read More

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November 2021

Sevoflurane prevents pulmonary vascular remodeling and right ventricular dysfunction in pulmonary arterial hypertension in rats.

Am J Transl Res 2021 15;13(10):11302-11315. Epub 2021 Oct 15.

Department of Cardiology, Tianjin Chest Hospital Tianjin 300222, China.

Background: The cardioprotective properties of sevoflurane have been reported in studies of the left ventricle. However, whether this volatile anesthetic would also be beneficial for pulmonary vascular remodeling and associated right ventricular hypertrophy (RVH) remained to be explored. Here, we investigated the potential benefit of sevoflurane to right heart function in experimental pulmonary arterial hypertension (PAH). Read More

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October 2021

Tissue selecting technique for adult women with low rectovaginal fistula.

J Chin Med Assoc 2022 Jan;85(1):120-123

Department of Anoretal Surgery, Liaocheng People's Hospital, Shandong, China.

Background: This study aimed to assess the effect of tissue selecting technique (TST) on low rectovaginal fistula (RVF) repair.

Methods: Patients with low RVF were included in the prospective study from August 2009 and January 2013 in xx hospital. Patients assigned to the TST or control groups based on the different surgical methods. Read More

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January 2022

[Rift Valley fever virus infection : physiopathology and pathogenesis].

Virologie (Montrouge) 2021 Oct;25(5):263-279

Cirad, UMR ASTRE, F-34395 Montpellier, France, Astre, Univ Montpellier, Cirad, Inrae, Montpellier, France.

Rift Valley fever (RVF) is a major emerging arboviral disease with a complex epidemiological cycle. RVF virus (RVFV) is transmitted by mosquito vectors to ruminants, causing epizootics, and then from animals to humans, triggering epidemics. During its cycle, RVFV infects a wide range of hosts, but the associated pathogenesis has yet to be elucidated. Read More

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October 2021

Galectin-3 reflects the echocardiographic quantification of right ventricular failure.

Scand Cardiovasc J 2021 Dec 5;55(6):362-370. Epub 2021 Nov 5.

First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, Mannheim, Germany.

. Galectin-3 (gal-3) is a mediator of extracellular matrix metabolism and reflects an ongoing cardiac fibrotic process. The aim of this study was to determine the potential use of gal-3 in evaluating the structural and functional parameters of the right ventricle as determined by echocardiography. Read More

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December 2021

Serological evidence of Rift Valley fever in domestic ruminants in Tunisia underlines the need for effective surveillance.

Open Vet J 2021 Jul-Sep;11(3):337-341. Epub 2021 Jul 9.

National School of Veterinary Medicine Sidi-Thabet, University of Manouba, Ariana, Tunisia.

Background: Rift Valley fever (RVF) is an infectious zoonotic disease infecting, mainly, domestic ruminants and causing significant economic and public health problems. RVF is a vector-borne disease transmitted by mosquitoes.

Aim: In this work, we tried to seek any RVF virus circulation in Tunisia. Read More

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December 2021

Early response of right-ventricular function to percutaneous mitral valve repair.

Clin Res Cardiol 2021 Oct 20. Epub 2021 Oct 20.

Department of Medicine II, Heart Center Bonn, University Hospital Bonn, Venusberg-Campus 1, 53127, Bonn, Germany.

Background: The change in right-ventricular function (RVF) after transcatheter mitral valve repair is still poorly understood. We assessed the early response of RVF to the MitraClip procedure and its clinical relevance.

Methods: We analyzed consecutive patients who underwent a MitraClip procedure to treat MR between August 2010 and March 2019 in the Heart Failure Network Rhineland registry. Read More

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October 2021

Clinical, echocardiographic and hemodynamic predictors of right heart failure after LVAD placement.

Int J Cardiovasc Imaging 2021 Oct 18. Epub 2021 Oct 18.

Section of Cardiology, Department of Medical Biotechnologies, University of Siena, Siena, Italy.

Right ventricular failure (RVF) after left ventricular assist device (LVAD) implant is associated with increasing morbidity and mortality. The aim of this study was to identify the best predictors of RVF post LVAD-implant among biochemical, haemodynamic and echocardiographic parameters. From 2009 to 2019, 38 patients who underwent LVAD implantation at our centre were prospectively enrolled. Read More

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October 2021