Acute In Vivo Functional Assessment of a Biodegradable Stentless Elastomeric Tricuspid Valve

AbstractDegradable heart valves based on in situ tissue regeneration have been proposed as potentially durable and non-thrombogenic prosthetic alternatives. We evaluated the acute in vivo function, microstructure, mechanics, and thromboresistance of a stentless biodegradable tissue-engineered heart valve (TEHV) in the tricuspid position. Biomimetic stentless tricuspid valves were fabricated with poly(carbonate urethane)urea (PCUU) by double-component deposition (DCD) processing to mimic native valve mechanics and geometry. Five swine then underwent 24-h TEHV implantation in the tricuspid position. Echocardiography demonstrated good leaflet motion and no prolapse and trace to mild regurgitation in all but one animal. Histology revealed patches of proteinaceous deposits with no cellular uptake. SEM demonstrated retained scaffold microarchitecture with proteinaceous deposits but no platelet aggregation or thrombosis. Explanted PCUU leaflet thickness and mechanical anisotropy were comparable with native tricuspid leaflets. Bioinspired, elastomeric, stentless TEHVs fabricated by DCD were readily implantable and demonstrated good acute function in the tricuspid position.
Source: Journal of Cardiovascular Translational Research - Category: Cardiology Source Type: research

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RARITAN, NJ, March 28, 2020 – The Janssen Pharmaceutical Companies of Johnson &Johnson today announced the VOYAGER PAD study met its primary efficacy and principal safety endpoints, demonstrating the XARELTO® (rivaroxaban) vascular dose (2.5 mg twice daily) plus aspirin (100 mg once daily) was superior to aspirin alone in reducing the risk of major adverse limb and cardiovascular (CV) events by 15 percent in patients with symptomatic peripheral artery disease (PAD) after lower-extremity revascularization, with similar rates of TIMI[1] major bleeding. VOYAGER PAD is the only study to show a significant benefit...
Source: Johnson and Johnson - Category: Pharmaceuticals Tags: Innovation Source Type: news
CONCLUSIONS: Although VHD did not significantly affect thromboembolism or mortality, it affected cardiac events depending on type, with aortic valve diseases having higher risk, in Japanese patients with AF. PMID: 32213725 [PubMed - as supplied by publisher]
Source: Circulation Journal - Category: Cardiology Authors: Tags: Circ J Source Type: research
RARITAN, N.J., March 20, 2020 – The Janssen Pharmaceutical Companies of Johnson &Johnson announced today that it will unveil late-breaking data from its leading cardiovascular and metabolism portfolio during the virtual American College of Cardiology’s 69th Annual Scientific Session together with the World Congress of Cardiology (ACC.20/WCC) on March 28-30, 2020. Notably, four late-breaking abstracts for XARELTO® (rivaroxaban) will be presented, including data from the Phase 3 VOYAGER PAD study in patients with symptomatic peripheral artery disease (PAD) after lower-extremity revascularization.Click to ...
Source: Johnson and Johnson - Category: Pharmaceuticals Source Type: news
CONCLUSIONS: Bleeding and thromboembolic complications were common in MHV prosthesis patients in this study. Long duration of anticoagulation, albeit sub-optimal control, was a risk factor for bleeding and thromboembolic complications in these patients. Therefore, long-term efforts are necessary to address these complications and possibly improve the quality of life of these patients. PMID: 32181794 [PubMed - as supplied by publisher]
Source: Cardiovascular Journal of Africa - Category: Cardiology Authors: Tags: Cardiovasc J Afr Source Type: research
n F Abstract Aortic valve stenosis is the most prevalent heart valve disease worldwide. Although interventional treatment options have rapidly improved in recent years, symptomatic aortic valve stenosis is still associated with high morbidity and mortality. Calcific aortic valve stenosis is characterized by a progressive fibro-calcific remodeling and thickening of the aortic valve cusps, which subsequently leads to valve obstruction. The underlying pathophysiology is complex and involves endothelial dysfunction, immune cell infiltration, myofibroblastic and osteoblastic differentiation, and, subsequently, calcific...
Source: Arteriosclerosis, Thrombosis and Vascular Biology - Category: Cardiology Authors: Tags: Arterioscler Thromb Vasc Biol Source Type: research
Conclusion Coagsense correlated better than Coagucheck XS and did not show increasing bias as INR increased. Both POC instruments had higher INR variability in 4 disease states (antiphospholipid syndrome, autoimmune, peripheral vascular disease, and hypercoagulable). Patient-specific laboratory correlations may be needed on each POC device.
Source: Point of Care: The Journal of Near-Patient Testing and Technology - Category: Pathology Tags: Original Articles Source Type: research
CONCLUSION: Platelet indices were not found to be associated with the presence of SEC formation in the left atrium among patients with mitral prosthetic valves. Therefore, the use of platelet indices alongside known echocardiographic and clinical risk factors to predict SEC development in patients with a mitral prosthesis is debatable. PMID: 32147647 [PubMed - in process]
Source: Turk Kardiyoloji Dernegi arsivi - Category: Cardiology Authors: Tags: Turk Kardiyol Dern Ars Source Type: research
Diagnosis, treatment &management of prosthetic valve thrombosis: the key considerations. Expert Rev Med Devices. 2020 Feb 21;: Authors: Gündüz S, Kalçık M, Gürsoy MO, Güner A, Özkan M Abstract Introduction: Prosthetic heart valve thrombosis is a life-threatening complication after valve replacement surgery. Although subtherapeutic anticoagulation is the main cause, there are many other conventional and esoteric predisposing factors.Areas covered: The etiopathogenesis, diagnosis and management of prosthetic heart valve thrombosis with particular focus on conventional...
Source: Expert Review of Medical Devices - Category: Medical Devices Tags: Expert Rev Med Devices Source Type: research
CONCLUSIONS: The findings imply that endothelial FSTL1 is critical for the homeostasis of vascular walls, and its insufficiency may favor cardiovascular fibrosis leading to heart failure. PMID: 32078339 [PubMed - as supplied by publisher]
Source: Arteriosclerosis, Thrombosis and Vascular Biology - Category: Cardiology Authors: Tags: Arterioscler Thromb Vasc Biol Source Type: research
ConclusionsThis is the largest series to date reporting>30-day follow-up for patients undergoing venous ablation procedures while receiving anticoagulation and the longest follow-up reported of any series. Durability, safety, and efficacy of vein ablation in patients receiving anticoagulation are comparable to those in control patients. Anticoagulation should not be considered a contraindication to endothermal ablation of the GSV or SSV for symptomatic venous reflux.
Source: Journal of Vascular Surgery: Venous and Lymphatic Disorders - Category: Surgery Source Type: research
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