Strategies for surface coatings of implantable cardiac medical devices May 17, 2024, 10:29 a.m.
The design of blood-compatible materials requires understanding the physiological mechanisms that give rise to undesirable blood-material interactions. In particular, the materials used in the design of CMDs are determined by the disease for which the CMDs are intended. For example, we review the utility of polymers in developing CMDs when the necessary materials need to be flexible and durable. On the other hand, when there is a need of materials with high mechanical resistance or more remarkable conductors, metals, and metals alloys are the best option. Also, the combination of these two types of materials is used to develop and enhance the ability to perform high workflow rates in CMDs. Even though metals and polymers have tremendous advantages in developing CMDs, there is a predominant recurring challenge, which is biocompatibility.
Association of pulmonary hypertension with the outcome in patients undergoing edge-to-edge mitral valve repair May 13, 2024, 7:40 a.m.
The new PH definition discriminates PH groups and mortality better than the old definition. The lower threshold of mPAP of 20mmHg improved prognostication in this cohort of patients.
Pulmonary Hypertension in Patients Eligible for Transcatheter Mitral Valve Repair: Prognostic Impact and Clinical Implications May 13, 2024, 7:40 a.m.
Pulmonary hypertension is associated with increased mortality and heart failure readmissions in patients undergoing TMVr using MitraClip. Further prospective studies are needed to determine whether earlier intervention will improve clinical outcomes.
AltaValve granted US FDA breakthrough device designation May 13, 2024, 7:37 a.m.
Specifically, the FDA granted the AltaValve system breakthrough Ddevice designations for two therapeutic indications, which include treatment of moderate-to-severe or severe mitral regurgitation (MR), and treatment of moderate-to-severe or severe MR with moderate/severe mitral annular calcification (MAC).
Blood-Contacting Biomaterials: In Vitro Evaluation of the Hemocompatibility April 24, 2024, 2:32 a.m.
The interaction of biomaterials with blood leads to cellular as well as humoral reactions, which can result in an unwanted inflammation and activation of coagulation and/or fibrinolysis. Thus, the development of biomaterials with an improved hemocompatibility increases the tolerability and minimizes unwanted side effects, such as thrombus formation. Therefore, during the development of new blood-contacting medical devices, not only the mechanical and chemical characteristics should play an important role, but also the hemocompatibility. Furthermore, to prove the safety and reliability of new products, hemocompatibility analyses should include appropriate references and follow the ISO 10993-4 standard.
An In Vitro Blood Flow Loop System for Thrombogenicity Evaluation of Medical Devices and Biomaterials April 24, 2024, 2:31 a.m.
There is currently no standardized test method for in vitro dynamic thrombogenicity assessment of medical devices and biomaterials. This tool will effectively enable users to differentiate device materials with different thrombogenic potentials against standard negative and positive control materials and a marketed comparator device with known thrombogenicity profile.
Comparison of animal and human blood for in vitro dynamic thrombogenicity testing of biomaterials April 24, 2024, 2:29 a.m.
These results demonstrated that multiple animal blood sources (particularly donor ovine and bovine blood) may be suitable alternatives to fresh human blood for dynamic thrombogenicity testing when appropriate control materials and donor-specific anticoagulation levels are used.
Impact of Frailty in Percutaneous Mitral & Tricuspid Valve Repair April 24, 2024, 2:22 a.m.
While frailty in mitral/tricuspid valve repair patients was linked to higher bleeding, infection, and hospital stay, it independently predicted long-term mortality, suggesting mechanisms beyond complications need further investigation to help this vulnerable population.
What are the benefits of valve replacement surgery? April 24, 2024, 2:21 a.m.
The progress made in heart valve replacements is an incredible advancement for the medical world. By further expanding their research and technology, doctors will be able to help a larger population of patients with fewer risks or complications associated with the procedure.
Mitral Annular Disjunction: Review of an Increasingly Recognized Mitral Valve Entity April 24, 2024, 2:19 a.m.
Mitral annular disjunction (MAD) refers to atrial displacement of the hinge point of the mitral valve annulus from the ventricular myocardium. MAD leads to paradoxical expansion of the annulus in systole and may often be associated with mitral valve prolapse (MVP), leaflet degeneration, myocardial and papillary muscle fibrosis, and, potentially, malignant cardiac arrhythmias. Patients with MAD and MVP may present similarly, and MAD is potentially the missing link in explaining why some patients with MVP experience adverse outcomes.
Advances in management of heart failure April 24, 2024, 2:14 a.m.
The management of patients with heart failure has changed markedly in the past several years, with evidence for four life prolonging classes of drugs for patients with reduced LVEF and the benefit of SGLT2 inhibitors for those with mildly reduced and preserved LVEF. Device management and other non-drug management have evolved as results from new clinical trials are published. Identification of appropriate candidates for treatment requires accurate diagnosis, which can be challenging for patients with heart failure and preserved ejection fraction. Additional questions remain—in particular, how best to implement these new treatment recommendations into clinical practice.
Trends in the Management of Anterior Mitral Leaflet Regurgitation April 24, 2024, 2:10 a.m.
In this cross-sectional study, MV repair was the preferred option for degenerative mitral valve disease but was only slightly more commonly performed than MVR for isolated anterior leaflet pathologic status. A large proportion of MVR was performed without an MV repair attempt, suggesting reluctance to repair this pathologic condition.
Survey Finds Around 3 in 10 Adults Unaware of Common Lifestyle Factors that Impact Heart Health April 24, 2024, 2:07 a.m.
Many people overlook common lifestyle factors that impact their heart health. The survey, conducted by Ipsos, reveals around three in 10 adults are unaware that alcohol (32 percent), smoking (27 percent), and lack of sleep (27 percent) are linked to heart disease.
Trends in the Management of Anterior Mitral Leaflet Regurgitation April 16, 2024, 9:17 a.m.
In this cross-sectional study, the surgical treatment of anterior leaflet abnormalities most commonly was noted with concomitant surgical procedures, and MV repair was only slightly more commonly performed than MVR. No attempt at MV repair was made before MVR in 81.7% of MVR cases. Neochordae repair and annuloplasty emerged as the predominant approach. Repair rates were higher in centers with higher volumes of anterior leaflet cases. There appear to be opportunities for improvement in the management of anterior leaflet abnormalities by the cardiac surgical community.
First large bore venous patient treated with PerQseal Elite vascular closure system April 16, 2024, 9:15 a.m.
Leveraging Vivasure Medical’s PerQseal technology, the PerQseal Elite vascular closure system is designed exclusively for sutureless and fully absorbable large-bore venous vessel closure following percutaneous cardiovascular procedures, such as transcatheter mitral valve repair or replacement (TMVR), transcatheter tricuspid valve repair or replacement (TTVR) and leadless pacemaker implants.
Long-Term Mortality after Transcatheter Edge-to-Edge Mitral Valve Repair Significantly Decreased over the Last Decade April 15, 2024, 1:31 p.m.
Different predictors for long-term mortality have been identified: while severe tricuspid regurgitation and NYHA class IV at baseline remained independently associated with an increased long-term mortality over the past decade, severe left ventricular dilatation and severe pulmonary hypertension predicted long-term mortality only in patients treated in the early M-TEER era. Although current guidelines recommend the procedure only for patients who remain symptomatic despite optimal medical therapy, our results suggest that timely treated patients benefit most from M-TEER before the onset of irreversible cardiac remodeling and severe pulmonary hypertension.
Complications in Acute Myocardial Infarction: Navigating Challenges in Diagnosis and Management March 24, 2024, 7:35 p.m.
The complications of AMI represent high-acuity, time-sensitive conditions associated with elevated morbidity and mortality rates. Early recognition and decisive intervention remain the cornerstones in the quest for optimal patient outcomes. Given the dramatic presentations associated with complications and the urgent need for intervention, early revascularization has become the standard of care, resulting in a reduced incidence of complications of less than 0.1%. Furthermore, emphasizing patient-centered planning and the judicious timing of appropriate interventions, including surgical procedures, percutaneous technologies, and mechanical circulatory support involvement, holds the potential to significantly enhance both disease- and patient-centered outcomes (Table 1). As a result, a multidisciplinary heart team emerges as a crucial entity in guiding the care of patients post-AMI with complications.
SS Innovations’ SSi Mantra Surgical Robotic System used to perform Mitral Valve Replacement March 24, 2024, 7:33 p.m.
The SSi Mantra Surgical Robotic System, the first surgical robotic system to be made in India, and one of the few cost-effective global options with a wide range of surgical applications, has received regulatory approval in India, Indonesia and Guatemala, and is clinically validated for over 50 different types of surgical procedures. To date, more than 800 surgical procedures have been conducted using the system. SS Innovations has initiated the regulatory approval process in the United States and the EU, with approvals anticipated in the latter half of 2024 or 2025.
Impact of Frailty in Percutaneous Mitral & Tricuspid Valve Repair March 24, 2024, 7:30 p.m.
Bleeding complications and infections were more frequent in frail patients undergoing transcatheter mitral and tricuspid valve repair and partly explained the longer hospital stay. Albeit some of the complications were associated with higher long-term mortality, this did not explain the strong association between frailty and mortality. Further research is warranted to explore interventions targeting periprocedural complications to improve outcomes in this vulnerable population.
What are the benefits of valve replacement surgery? March 24, 2024, 7:28 p.m.
The heart, is a vital organ beating rhythmically, fuels life throughout our bodies. However, for millions worldwide, heart valve diseases disrupt this vital rhythm. Fortunately, recent years have witnessed groundbreaking progress in heart valve replacement surgery in India, offering renewed hope and an enhanced quality of life for those in need. Raising awareness about these advancements is crucial for optimal utilization and patient benefit.