Current Mitral Valve News and Events

Current Mitral Valve News and Events, Mitral Valve News Articles.
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This robot doesn't need any electronics
Engineers at the University of California San Diego have created a four-legged soft robot that doesn't need any electronics to work. The robot only needs a constant source of pressurized air for all its functions, including its controls and locomotion systems. The team, led by Michael T. Tolley, a professor of mechanical engineering at the Jacobs School of Engineering at UC San Diego, details its findings in the Feb. 17, 2021 issue of Science Robotics. (2021-02-17)

Understanding heart disease, stroke in women remains a scientific research priority
The February 2021 issue of Circulation, published online today, features new clinical trial research, state of the art reviews and scientific perspectives exploring the unique challenges women face in their fight against heart disease and stroke. The journal received more than 100 manuscripts for consideration this year, the most ever in the five years the current editorial board has published a special Go Red for Women issue. (2021-02-16)

'COVID effect' leads to fewer heart surgeries, more patient deaths
The most deadly global health crisis in a century has resulted in a substantial decline in overall heart surgery volume and an unexplained increase in deaths after coronary artery bypass grafting. (2021-01-30)

Breakthrough design at UBCO vastly improves mechanical heart valve
New research coming out of UBC's Okanagan campus may take the current 'gold standard' for heart valves to a new level of reliability. A team of researchers at UBCO's Heart Valve Performance Lab (HVPL) has developed a way to improve overall blood flow through the valves, so the design of mechanical heart valves will more closely match the real thing. (2021-01-26)

Low cost chlorine dispensing device improves tap water safety in low-resource regions
Engineers have developed an inexpensive chlorine dispensing device that improves the safety of drinking water in remote and low resource regions at the point of collection. It requires no electricity and very little maintenance, and provides a quick and easy way to eliminate water borne pathogens. (2021-01-14)

CVIA has just published a new issue, Volume 5 Issue 2
The journal Cardiovascular Innovations and Applications (CVIA) has just published the second issue of Volume 5. This issue brings together important research from authors in the USA and China, and includes new papers on 'Current Management Strategies in Patients with Heart Failure and Atrial Fibrillation' and 'Epicardial Adipose Tissue in Patients with Obstructive Sleep Apnea: A Systematic Review and Meta-analysis.' (2020-12-22)

A potential therapy for one of the leading causes of heart disease
After 15 years of unrelenting work, a team of scientists from Gladstone Institutes has discovered a potential drug candidate for heart valve disease that works in both human cells and animals and is ready to move toward a clinical trial. Their findings were just published in the journal Science. (2020-12-10)

This 3D printer doesn't gloss over the details
A new 3D printing system designed by MIT researchers enables realistic variations in glossiness across a 3D printed surface. The advance could aid fine art reproduction and the design of prosthetics. (2020-12-02)

Scientists solve big limitation of stratospheric balloon payloads
Nearly all photons emitted after the Big Bang are now visible only at far-infrared wavelengths. Earth's atmosphere blocks most of this light, so scientists are turning to huge stratospheric balloons to explore it. However, it is quite difficult to cool a telescope the size of a living room to nearly absolute zero while flying it from a balloon. This is where the Balloon-Borne Cryogenic Telescope Testbed comes in. (2020-12-01)

Scoring system improves screening for "dual" heart disease
Aortic stenosis is one of the most common heart valve defects. As well as conventional valve replacement involving open-heart surgery, a less invasive procedure has now been available for some time in the form of transcatheter aortic valve replacement (TAVR). (2020-11-24)

Implantation of an S-ICD in a patient with a DDD pacemaker and congenitally corrected transposition
Implantation of an S-ICD in a Patient with a DDD Pacemaker and Congenitally Corrected Transposition of the Great Arteries. In a new publication from Cardiovascular Innovations and Applications; DOI https://doi.org/10.15212/CVIA.2019.0597, Yu Zhang, Wen-Long Dai, Can-Can Lin, Qiao-Yuan Li and Cheng-Jun Guo from Beijing Anzhen Hospital, Capital Medical University, Beijing, China consider implantation of an S-ICD in a patient with a DDD pacemaker and congenitally corrected transposition of the great arteries. (2020-11-19)

TAVR is dominant form of aortic valve replacement, outcomes steadily improving in the US
Since the approval of the first TAVR device in 2011, more than 276,000 patients have undergone a TAVR procedure in the U.S. According to an STS/ACC TVT Registry report, volumes have increased every year and in 2019 TAVR exceeded all forms of SAVR. While 30-day mortality and stroke rates have decreased, pacemaker need remains largely unchanged. The report was published in the Journal of the American College of Cardiology and The Annals of Thoracic Surgery. (2020-11-16)

Rivaroxaban may be as effective as warfarin for bioprosthetic mitral valves, AF
The RIVER trial is the largest study assessing the efficacy and safety of the anticoagulant rivaroxaban in patients with an artificial mitral valve to correct an irregular heart rhythm. Researchers concluded that rivaroxaban worked as well as the standard anticoagulant medication warfarin. (2020-11-14)

Valves on N95 masks do not filter exhaled droplets
Matthew Staymates, fluid dynamicist at the National Institute of Standards and Technology, is studying different mask types to determine which are the most effective at reducing disease transmission. In Physics of Fluids, he describes exploring the basic flow dynamics of N95 masks with or without exhalation valves. To do this, he generates stunning video from his schlieren imaging, a method to visualize the fluid flow away from the surface of an object, and light scattering. (2020-11-10)

New airflow videos show why masks with exhalation valves do not slow the spread of COVID
Using high-speed video and schlieren imaging, NIST researcher Matthew Staymates created videos that show how air flows through masks with and without exhalation valves. 'When you compare the videos side by side, the difference is striking,' Staymates said. 'These videos show how the valves allow air to leave the mask without filtering it, which defeats the purpose of the mask.' (2020-11-10)

New medication may treat underlying causes of hypertrophic cardiomyopathy
Mavacamten, a new investigational cardiac medication, may improve heart function for people with thickened heart muscle leading to obstructed blood flow through the heart, a condition known as obstructive hypertrophic cardiomyopathy. The treatment appears to improve heart structure, reduce cardiac filling pressures (decrease measures of stiffness) and restore normal mitral valve motion. (2020-11-09)

Rare congenital heart defect rescued by protease inhibition
A research team at the Greenwood Genetic Center (GGC) has successfully used small molecules to restore normal heart and valve development in an animal model for Mucolipidosis II (ML II), a rare genetic disorder. The study is reported in this month's JCI Insight. (2020-10-15)

New bioprosthetic valve for TAVR fails to demonstrate non-inferiority
In a randomized clinical trial, SCOPE II, a new self-expanding bioprosthetic valve used in transcatheter aortic valve replacement (TAVR) failed to demonstrate non-inferiority compared to an existing self-expanding valve. (2020-10-15)

Results from the REFLECT II Trial reported at TCT Connect
The REFLECT II randomized clinical trial evaluating the safety and efficacy of a device designed to reduce cerebral embolization and ischemic stroke, complications of transcatheter aortic valve replacement (TAVR), found that the device met the primary safety endpoint compared to historical controls but did not demonstrate superiority of the device for the primary hierarchical efficacy endpoint. (2020-10-15)

Results from the MITHRAS trial reported at TCT Connect and published in Circulation
The MITHRAS randomized clinical trial found that interventional closure of an iatrogenic atrial septal defect (iASD) driven by transcatheter mitral valve repair (TMVR) was not superior to conservative medical treatment with regard to the primary endpoint of change in six-minute walking distance. (2020-10-15)

Aortic valve replacement during COVID-19 pandemic
The outcomes associated with deferred compared with expedited aortic valve replacement in patients with severe aortic stenosis during the COVID-19 pandemic are evaluated in this observational study. (2020-09-30)

How earthquake swarms arise
A new fault simulator maps out how interactions between pressure, friction and fluids rising through a fault zone can lead to slow-motion quakes and seismic swarms. (2020-09-24)

Face shield or face mask to stop the spread of COVID-19?
If CDC guidelines aren't enough to convince you that face shields alone shouldn't be used to stop the spread of COVID-19, then maybe a new visualization study will. Researchers simulated coughing and sneezing from a mannequin's mouth using a laser light to visualize droplets expelled. They tested a plastic face shield and found that they block the initial forward motion of the exhaled jet, however, aerosolized droplets are able to move around the visor with relative ease. (2020-09-01)

Study reveals best anti-clotting strategy after heart valve intervention
The POPular TAVI trial has challenged current guideline recommendations on antiplatelet treatment after transcatheter aortic valve implantation (TAVI) in patients not taking oral anticoagulation. The findings are presented in a Hot Line session today at ESC Congress 2020. (2020-08-31)

Trial supports first specific treatment for obstructive hypertrophic cardiomyopathy
Mavacamten improves heart function and symptoms in patients with obstructive hypertrophic cardiomyopathy, according to results of the EXPLORER-HCM trial presented in a Hot Line session today at ESC Congress 2020. (2020-08-31)

Research brief: Researchers 3D print lifelike heart valve models
Researchers from the University of Minnesota, with support from Medtronic, have developed a groundbreaking process for multi-material 3D printing of lifelike models of the heart's aortic valve and the surrounding structures that mimic the exact look and feel of a real patient. (2020-08-28)

Computational modeling enables heart valve visualizations
Computational modeling has provided new insights into the heart's vascular system, a complex and mechanically demanding system that remains poorly understood. (2020-08-05)

Engineers find thinner tissues in replacement heart valves create problematic flutter
Iowa State and University of Texas engineers have developed high-fidelity computational models of replacement heart valves to examine the performance of biological tissues built into the valves. They found that thinner tissues can flap and flutter, which can damage the valves and even the blood that flows by. (2020-07-29)

Hyperactive immune cells accelerate heart valve disease: Study
Aortic valve stenosis is the most common type of heart valve disease in the elderly and affects more than one in eight people aged over 75. Researchers used organ-on-a-chip technology to discover the disease is made worse by the damaging hyperactivity of immune cells, which are activated by the constant stress of squeezing through the narrow aortic valve. (2020-07-08)

New heart valve could transform open heart surgery for millions of patients globally
A new polymeric heart valve with a life span potentially longer than current artificial valves that would also prevent the need for the millions of patients with diseased heart valves to require life-long blood thinning tablets has been developed by scientists at the universities of Bristol and Cambridge. The team's latest in-vitro results, published in Biomaterials Science, suggest that the PoliValve could last for up to 25 years. (2020-06-29)

External ultrasound therapy of calcific aortic stenosis -- First-in-man
Cardiawave (France) has developed a Non-Invasive Ultrasound Therapy (NIUT) for the treatment of cardio-valvular diseases such as aortic stenosis. This is the primary valve disease in adults and one of the leading causes of cardiovascular death worldwide which affects 10 million people in Europe and the USA. (2020-06-25)

Comprehensive evaluation of mitral valve-in-valve and valve-in-ring
Mitral valve-in-valve (ViV) and valve-in-ring (ViR) are alternatives to surgical reoperation in patients with recurrent mitral valve failure after previous surgical valve repair or replacement. Our aim was to perform a large-scale analysis examining mid-term outcomes after mitral ViV and ViR. (2020-06-25)

Long-term outcomes after TAVI in failed bioprosthetic valves in the VIVID Registry
Due to bioprosthetic valve degeneration, aortic valve-in-valve (ViV) procedures are increasingly performed. There is no data on long-term outcomes after aortic ViV. Our aim was to perform a large-scale assessment of long-term survival and reintervention after aortic ViV. (2020-06-25)

Simple device monitors health using sweat
A device that monitors health conditions in the body using a person's sweat has been developed by Penn State and Xiangtan University researchers, according to Huanyu 'Larry' Cheng, assistant professor of engineering science and mechanics, Penn State. (2020-06-23)

How commonly do patients develop persistent opioid use after cardiac surgery?
A large, national database was used to determine how common it was for patients who hadn't used opioids before undergoing a coronary artery bypass grafting or heart valve procedure to subsequently develop persistent opioid use after surgery. (2020-06-17)

10 percent of patients continue to use opioids three to six months after heart surgery
Nearly 10 percent of patients who are prescribed opioid medications following heart surgery will continue to use opioids more than 90 days after the procedure, according to a new study led by researchers at Penn Medicine. The study also revealed a direct link between the dosage of opioids first prescribed following discharge and the likelihood of persistent opioid use 90 to 180 days after the procedure. (2020-06-17)

MIT, NIST create first room-temp 'magnon switch' with industrially useful properties
NIST and MIT scientists have demonstrated a practical technique for controlling magnons, which could lead to computer chip switches that would use less energy and radiate less heat. The approach brings two important firsts: It can be built on silicon and operates efficiently at room temperature, meaning it might be more readily employed by computer manufacturers. (2020-06-15)

Van der Waals junction spin valves without spacer layer
Distinct from traditional spin valves with a sandwich structure consisting of two ferromagnetic metals decoupled by the insertion of a non-magnetic spacer, recently, a research team led by Prof. Kaiyou Wang from Institute of Semiconductors, Chinese Academy of Sciences, collaborating with their colleagues, has demonstrated two-state and three-state spin-valve effects using Fe3GeTe2 vdW homo-junctions without any spacer layer. Realization of multi spin states using the vdW interfaces could be important for non-volatile spintronic applications. (2020-05-27)

Study finds TAVR is safe treatment for patients with bicuspid valve disease
For many patients with a bicuspid aortic valve that needs replacing, transcatheter aortic valve replacement (TAVR) appears to be a safe treatment option with low complication rates, according to a study published in JACC: Cardiovascular Interventions. The study found patients with bicuspid valves who were at increased risk for surgery had a 30-day and one-year mortality rate and stroke rate that was similar to patients with the more common tricuspid valves. (2020-05-27)

'Pivotal' trial results display favorable outcomes for use of TPV device
A percutaneous transcatheter therapy for congenital heart disease (CHD) patients with severe pulmonary regurgitation (PR) has been slow to materialize, in comparison to transcatheter pulmonary valve (TPV) therapy for a dysfunctional surgical RV-PA conduit which was first implanted twenty years ago as the Melody TPV. Findings from the Medtronic Harmony TPV Pivotal Trial were presented today during the SCAI 2020 Scientific Sessions Virtual Conference and showed favorable outcomes utilizing the device in patients with severe PR. (2020-05-15)

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