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https://www.readbyqxmd.com/read/28893395/morphologic-variability-of-the-mitral-valve-leaflets
#1
Agata Krawczyk-Ożóg, Mateusz K Hołda, Danuta Sorysz, Mateusz Koziej, Zbigniew Siudak, Dariusz Dudek, Wiesława Klimek-Piotrowska
OBJECTIVES: The rapid development of surgical and less-invasive percutaneous mitral valve repair procedures has increased interest in mitral valve anatomy. We characterize the morphologic variability of the mitral valve leaflets and provide the size of their particular parts. METHODS: We studied 200 autopsied human hearts from white individuals without any valvar diseases. We measured the intercommissural and aorto-mural diameters of the mitral annulus and identified the leaflets and their scallops...
August 16, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28888041/supplementation-with-the-methyl-donor-betaine-prevents-congenital-defects-induced-by-prenatal-alcohol-exposure
#2
Ganga Karunamuni, Megan M Sheehan, Yong Qiu Doughman, Shi Gu, Jiayang Sun, Youjun Li, James P Strainic, Andrew M Rollins, Michael W Jenkins, Michiko Watanabe
BACKGROUND: Despite decades of public education about dire consequences of prenatal alcohol exposure, drinking alcohol during pregnancy remains prevalent. As high as 40% of live-born infants exposed to alcohol during gestation and diagnosed with Fetal Alcohol Syndrome have congenital heart defects that can be life-threatening. In animal models, the methyl donor betaine, found in foods such as wheat bran, quinoa, beets and spinach, ameliorated neurobehavioral deficits associated with prenatal alcohol exposure (PAE) but effects on heart development are unknown...
September 9, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28886071/dynamics-of-the-aortic-annulus-in-4d-ct-angiography-for-transcatheter-aortic-valve-implantation-patients
#3
Mustafa A Elattar, Leon W Vink, Martijn S van Mourik, Jan Baan, Ed T vanBavel, R Nils Planken, Henk A Marquering
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a well-established treatment for patients with severe aortic valve stenosis. This procedure requires pre-operative planning by assessment of aortic dimensions on CT Angiography (CTA). It is well-known that the aortic root dimensions vary over the heart cycle. However, sizing is commonly performed at either mid-systole or end-diastole only, which has resulted in an inadequate understanding of its full dynamic behavior. STUDY GOAL: We studied the variation in annulus measurements during the cardiac cycle and determined if this variation is dependent on the amount of calcification at the annulus...
2017: PloS One
https://www.readbyqxmd.com/read/28870877/very-low-pacemaker-rate-following-acurate-neo-transcatheter-heart-valve-implantation
#4
Stefan Toggweiler, Henrik Nissen, Brynjolfur Mogensen, Florim Cuculi, Christian Fallesen, Karsten Tange Veien, Miriam Brinkert, Richard Kobza, Andreas Rück
AIMS: Investigate if minimizing trauma to the aortic annulus and left ventricular outflow tract reduces the occurrence of new conduction disorders and need for permanent pacemakers. METHODS AND RESULTS: A total of 175 patients (58% women, mean age 83 ± 6 years) underwent transfemoral TAVI with the Boston Scientific ACURATE neo at three centers in Europe. Prosthesis size selection was based on perimeter derived annular diameter. Predilatation was performed in all with a balloon 1...
September 5, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28832792/a-new-experimental-device-for-transapical-access-of-the-aortic-and-mitral-valves-as-well-as-the-aorta-in-its-various-segments
#5
Leonardo Paim, José Honório Palma da Fonseca, Francismar Vidal de Arruda, Paulo Sampaio Gutierrez, Luiz Felipe Pinho Moreira, Fabio Biscegli Jatene
Objective: To present the results of a new experimental device developed to facilitate the transapical access in endovascular treatment of structural heart diseases. It aims to reduce the risk of bleeding and complications in this type of access and demonstrate the device as a safe, fast and effective alternative. Methods: CorPoint is composed of three parts: introducer, base with coiled spring, and closing capsule. By rotating movements, the spring is introduced into the myocardium and progressively approaches the base to the surface of the heart...
May 2017: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28818088/assessment-of-the-effect-of-left-atrial-cryoablation-enhanced-by-ganglionated-plexi-ablation-in-the-treatment-of-atrial-fibrillation-in-patients-undergoing-open-heart-surgery
#6
Jiří Bárta, Radim Brát
BACKGROUND: The aim of our study was to investigate, whether enhancement of left atrial cryoablation by ablation of the autonomic nervous system of left atrium leads to influencing the outcomes of surgical treatment of atrial fibrillation in patients with structural heart disease undergoing open-heart surgery. METHODS: The observed patient file consisted of 100 patients, who have undergone a combined open-heart surgery at our department between July 2012 and December 2014...
August 17, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28802510/aortic-dilatation-associated-with-bicuspid-aortic-valve-relation-to-sex-hemodynamics-and-valve-morphology-the-national-heart-lung-and-blood-institute-sponsored-national-registry-of-genetically-triggered-thoracic-aortic-aneurysms-and-cardiovascular-conditions
#7
MULTICENTER STUDY
Mary J Roman, Norma L Pugh, Richard B Devereux, Kim A Eagle, Kathryn Holmes, Scott A LeMaire, Rita K Milewski, Shaine A Morris, Siddharth K Prakash, Reed E Pyeritz, William J Ravekes, Ralph V Shohet, Howard K Song, Federico M Asch
This study analyzed the impact of sex, hemodynamic profile, and valve fusion pattern on aortopathy associated with bicuspid aortic valve (BAV). The National Heart Lung and Blood Institute-sponsored National Registry of Genetically Triggered Thoracic Aortic Aneurysms and Cardiovascular Conditions (GenTAC) provided comprehensive information on a large population of well-characterized patients with BAV. Of 969 enrolled patients with BAV, 551 (57%, 77% male) had already undergone valvular and/or aortic surgery...
October 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28800323/platelet-activation-and-erythrocyte-lysis-during-brief-exposure-of-blood-to-pathophysiological-shear-stress-in-vitro
#8
Suvankar Majumdar, Chetan N Patil, Tammy Ladner-Threadgill, Erica Randolph, Greg W Burgreen, John C Kermode
BACKGROUND: Interaction of von Willebrand factor (VWF) with circulating platelets is the trigger for thrombosis in a region of arterial stenosis. These events are typically studied in vitro under conditions where platelets adhere to a VWF-coated surface. Our approach assesses platelet responses in the absence of adhesion. OBJECTIVE: To characterize extent of platelet activation and erythrocyte lysis in an artificial stenosis model. METHODS: Whole blood is perfused through a length of polyetheretherketone tubing that includes an artificial stenosis, comprising narrow-bore (89-381 μm) tubing...
August 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28791264/prediction-of-pregnancy-complication-occurrence-using-fetal-cardiac-output-assessments-made-by-ultrasonography-at-20-to-24-weeks-of-gestation
#9
Ji Yeon Lee, Young Li Kim, Ji Eun Jeong, Jun Woo Ahn
OBJECTIVE: To evaluate the importance of assessment of fetal cardiac output (CO) for the prediction of complications of pregnancy. METHODS: We evaluated 65 fetuses and all of them had a fetal cardiac scan at 20 to 24 weeks of pregnancy. To measure CO, diameters (d) of the left right ventricle outflow tract were measured just above the valves. Each left CO (LCO) and right CO (RCO) was derived using the following equation: CO = velocity time integral × π × d(2)/4 × heart rate...
July 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28780036/transcatheter-tricuspid-valve-repair-with%C3%A2-a-new-transcatheter-coaptation-system-for-the-treatment-of-severe-tricuspid-regurgitation-1-year-clinical-and-echocardiographic-results
#10
Gidon Perlman, Fabien Praz, Rishi Puri, Hadass Ofek, Jian Ye, Francois Philippon, Thierry Carrel, Philippe Pibarot, Adrian Attinger, Nay Min Htun, Danny Dvir, Robert Moss, Francisco Campelo-Parada, Elisabeth Bédard, David Reineke, Aris Moschovitis, Sandra Lauck, Philipp Blanke, Jonathon Leipsic, Stephan Windecker, Josep Rodés-Cabau, John Webb
OBJECTIVES: This study sought to describe the 1-year experience with the transcatheter FORMA system for severe tricuspid regurgitation (TR). BACKGROUND: Severe TR is associated with significant morbidity and mortality. Novel transcatheter therapies have been recently developed. METHODS: Eighteen patients underwent device implantation at 3 centers in Canada and Switzerland. Baseline characteristics, procedural, 30-day, and 1-year outcomes were prospectively evaluated using multimodality imaging and hemodynamic and clinical assessments...
July 27, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28774344/late-outcome-of-surgical-radiofrequency-ablation-for-persistent-valvular-atrial-fibrillation-in-china-a-single-center-study
#11
Hailong Cao, Yunxing Xue, Qing Zhou, Minggang Yu, Chenbin Tang, Dongjin Wang
BACKGROUND: Atrial fibrillation (AF) adversely affects surgical outcomes of cardiac valve surgery. Surgical ablation is an effective way to treat valvular AF. The aim of this study was to evaluate the late outcome of surgical radiofrequency ablation and explore the risk factors of AF recurrence in Chinese patients undergoing cardiac valve surgery. METHODS: Three hundred ninety six consecutive patients with persistent valvular AF were enrolled in this study. They underwent concomitant modified Maze IV and were completed follow-ups...
August 3, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28759082/persistent-left-superior-vena-cava
#12
Kamil W Tyrak, Jakub Holda, Mateusz K Holda, Mateusz Koziej, Katarzyna Piatek, Wieslawa Klimek-Piotrowska
Persistent left superior vena cava (PLSVC) is the most common congenital malformation of thoracic venous return and is present in 0.3 to 0.5% of individuals in the general population. This heart specimen was dissected from a 35-year-old male cadaver whose cause of death was determined as non-cardiac. The heart was examined and we found a PLSVC draining into the coronary sinus. The right superior vena cava was present with a small-diameter ostium. An anomalous pulmonary vein pattern was observed; there was a common trunk to the left superior and left inferior pulmonary veins (diameter 17...
May 23, 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28756420/safety-and-feasibility-of-rotational-atherectomy-in-elderly-patients-with-severe-aortic-stenosis
#13
Matthew Lippmann, Jigar Patel, Jared Kvapil, David Westover, Michael Pierpoline, Peter Tadros, Mark Wiley, George Zorn, Greg Muehlebach, Ashwani Mehta, Eric Hockstad, Matthew Earnest, Kamal Gupta
BACKGROUND: Percutaneous coronary intervention (PCI) followed by transcatheter aortic valve replacement (TAVR) is an alternative to surgery in patients with severe aortic stenosis (AS) and coronary artery disease (CAD). In many, the coronary arteries are severely calcified and best treated with rotational atherectomy (RA). However, RA is not routinely performed in severe AS patients due to safety concerns. There is a paucity of data on the safety of RA in severe AS patients with calcific CAD...
August 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28741093/fetal-right-ventricular-prominence-associated-postnatal-abnormalities-and-coarctation-clinical-prediction-tool
#14
Alyssa Power, Alberto Nettel-Aguirre, Deborah Fruitman
Fetal right ventricular (RV) prominence is a known indicator of possible left-sided structural heart disease with a low positive predictive value for aortic coarctation. There is a paucity of data on identifying which fetuses with RV prominence will have postnatal arch obstruction. Our study objectives were to create a clinical prediction tool for coarctation and to describe the diagnostic outcomes of our cohort with fetal RV prominence. We performed a retrospective review of patients referred with fetal RV prominence from January 2009 to October 2015...
July 24, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28741057/the-role-of-angiography-in-the-congruence-of-cardiovascular-measurements-between-autopsy-and-postmortem-imaging
#15
Renaud Troxler, Costin Minoiu, Paul Vaucher, Katarzyna Michaud, Francesco Doenz, Kewin Ducrot, Silke Grabherr
INTRODUCTION: Postmortem CT angiography is the method of choice for the postmortem imaging investigations of the cardiovascular (CV) system. However, autopsy still remains the gold standard for CV measurement. Nevertheless, there are not any studies on CV measurements on the multi-phase postmortem angiography (MPMCTA) which includes comparisons with autopsy. Therefore, the aim of this study is to compare CV measurements between the native CT scan and the three phases of the MPMCTA to find out which of these modalities correlate the best with autopsy measurements...
July 24, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28734620/treatment-of-dogs-with-compensated-myxomatous-mitral-valve-disease-with-spironolactone-a-pilot-study
#16
M J Hezzell, A Boswood, J López-Alvarez, N Lötter, J Elliott
OBJECTIVES: Spironolactone improves outcome in dogs with advanced myxomatous mitral valve disease (MMVD). Its efficacy in preclinical MMVD is unknown. The hypothesis was the administration of spironolactone to dogs with compensated MMVD demonstrating risk factors for poorer prognosis will decrease the rate of disease progression. The aim was to provide pilot data to evaluate preliminary effects and sample size calculation for a definitive clinical trial. ANIMALS: Twenty-five client-owned dogs with MMVD with at least one of the following; left atrial to aortic ratio (LA:Ao) ≥ 1...
August 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28724752/the-fluid-mechanics-of-transcatheter-heart-valve-leaflet-thrombosis-in-the-neo-sinus
#17
Prem A Midha, Vrishank Raghav, Rahul Sharma, Jose F Condado, Ikechukwu U Okafor, Tanya Rami, Gautam Kumar, Vinod H Thourani, Hasan Jilaihawi, Vasilis Babaliaros, Raj R Makkar, Ajit P Yoganathan
Background -Transcatheter heart valve (THV) thrombosis has been increasingly reported. In these studies, thrombus quantification has been based on 2D assessment of a 3D phenomenon. Methods -Post-procedural four-dimensional, volume-rendered CT (4DCT) data of CoreValve, Evolut R, and SAPIEN 3 transcatheter aortic valve replacement (TAVR) patients enrolled in the RESOLVE trial were included in this analysis. Patients on anticoagulation were excluded. SAPIEN 3 and CoreValve/Evolut R patients with and without hypo-attenuated leaflet thickening (HALT) were included in order to study differences between groups...
July 19, 2017: Circulation
https://www.readbyqxmd.com/read/28696869/feasibility-of-biventricular-repair-in-right-dominant-unbalanced-atrioventricular-septal-defect-a-new-echocardiographic-metric-to-refine-surgical-decision-making
#18
Ignacio Lugones, María Fernanda Biancolini, Julio César Biancolini, Ana M S de Dios, Germán Lugones
BACKGROUND: Unbalanced forms of atrioventricular septal defect continue to be challenging and present poor surgical outcomes. Echocardiographic indicators such as atrioventricular valve index, right ventricle/left ventricle inflow angle, and size of the ventricular septal defect have been identified as relevant discriminators that may guide surgical strategy. Our purpose is to describe another metric to refine surgical decision-making. METHODS: We outline a geometrical description of the anatomic features of atrioventricular septal defect and describe equations that help explain the interplay between the main echocardiographic variables...
July 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28678926/late-results-of-cox-maze-iii-procedure-in-patients-with-atrial-fibrillation-associated-with-structural-heart-disease
#19
Gustavo Gir Gomes, Wagner Luis Gali, Alvaro Valentim Lima Sarabanda, Claudio Ribeiro da Cunha, Iruena Moraes Kessler, Fernando Antibas Atik
Background: Cox-Maze III procedure is one of the surgical techniques used in the surgical treatment of atrial fibrillation (AF). Objectives: To determine late results of Cox-Maze III in terms of maintenance of sinus rhythm, and mortality and stroke rates. Methods: Between January 2006 and January 2013, 93 patients were submitted to the cut-and-sew Cox-Maze III procedure in combination with structural heart disease repair. Heart rhythm was determined by 24-hour Holter monitoring...
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28674631/liver-stiffness-assessed-by-fibrosis-4-index-predicts-mortality-in-patients-with-heart-failure
#20
Yu Sato, Akiomi Yoshihisa, Yuki Kanno, Shunsuke Watanabe, Tetsuro Yokokawa, Satoshi Abe, Tomofumi Misaka, Takamasa Sato, Satoshi Suzuki, Masayoshi Oikawa, Atsushi Kobayashi, Takayoshi Yamaki, Hiroyuki Kunii, Kazuhiko Nakazato, Shu-Ichi Saitoh, Yasuchika Takeishi
OBJECTIVE: Liver dysfunction due to heart failure (HF) is known as congestive hepatopathy. It has recently been reported that liver stiffness assessed by transient elastography reflects increased central venous pressure. The Fibrosis-4 (FIB4) index (age (years) × aspartate aminotransferase (IU/L)/platelet count (10(9)/L) × square root of alanine aminotransferase (IU/L)) is expected to be useful for evaluating liver stiffness in patients with non-alcoholic fatty liver disease. We aimed to investigate the impact of the FIB4 index on HF prognosis, with consideration for liver fibrosis markers and underlying cardiac function...
2017: Open Heart
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