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Cardiac valve anatomy

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https://www.readbyqxmd.com/read/29770201/recent-advances-in-managing-septal-defects-ventricular-septal-defects-and-atrioventricular-septal-defects
#1
REVIEW
P Syamasundar Rao, Andrea D Harris
This review discusses the management of ventricular septal defects (VSDs) and atrioventricular septal defects (AVSDs). There are several types of VSDs: perimembranous, supracristal, atrioventricular septal, and muscular. The indications for closure are moderate to large VSDs with enlarged left atrium and left ventricle or elevated pulmonary artery pressure (or both) and a pulmonary-to-systemic flow ratio greater than 2:1. Surgical closure is recommended for large perimembranous VSDs, supracristal VSDs, and VSDs with aortic valve prolapse...
2018: F1000Research
https://www.readbyqxmd.com/read/29753818/routine-papillary-muscle-realignment-and-septal-myectomy-for-obstructive-hypertrophic-cardiomyopathy
#2
Howard K Song, Jason Turner, Rebekah Macfie, Suwen Kumar, Meghan J Mannello, Danielle Smith, Castigliano Bhamidipati, Jaishankar Raman, Frederick Tibayan, Stephen B Heitner
BACKGROUND: Septal myectomy has been the mainstay of the surgical treatment of obstructive hypertrophic cardiomyopathy (HCM), however recently there is growing appreciation for associated mitral valve abnormalities that contribute to left ventricular outflow tract (LVOT) obstruction. In this study, we describe our experience with combined papillary muscle realignment (PMR) and septal myectomy for the treatment of obstructive HCM. METHODS: We identified 44 patients undergoing surgery for obstructive HCM whose anatomy was amenable to combined PMR and septal myectomy at our institution over a 20-month period...
May 10, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29688180/patient-selection-echocardiographic-screening-and-treatment-strategies-for-interventional-tricuspid-repair-using-the-edge-to-edge-repair-technique
#3
Jörg Hausleiter, Daniel Braun, Mathias Orban, Azeem Latib, Philipp Lurz, Peter Boekstegers, Ralph Stephan von Bardeleben, Marek Kowalski, Rebecca T Hahn, Francesco Maisano, Christian Hagl, Steffen Massberg, Michael Nabauer
Severe tricuspid regurgitation (TR) has long been neglected despite its well known association with mortality. While surgical mortality rates remain high in isolated tricuspid valve surgery, interventional TR repair is rapidly evolving as an alternative to cardiac surgery in selected patients at high surgical risk. Currently, interventional edge-to-edge repair is the most frequently applied technique for TR repair even though the device has not been developed for this particular indication. Due to the inherent differences in tricuspid and mitral valve anatomy and pathology, percutaneous repair of the tricuspid valve is challenging due to a variety of factors including the complexity and variability of tricuspid valve anatomy, echocardiographic visibility of the valve leaflets, and device steering to the tricuspid valve...
April 24, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29687700/impella-pumps-overview-and-access-site-management
#4
Francesco Burzotta, Giulo Russo, Leonardo Previ, Piergiorgio Bruno, Cristina Aurigemma, Carlo Trani
The Impella left ventricular support system consists of two main components: a family of different ventricular support catheters with a microaxial pump to be placed across the aortic valve and a single external controller (AIC) which is connected to activate and control the pump function. Four Impella left ventricular support catheters are available: Impella 2.5, Impella CP, Impella 5.0 and Impella LD. Impella 2.5 and Impella CP are designed for percutaneous peripheral insertion, have respectively a 12F and 14F maximal diameter at the pump level and are capable of providing up to 2...
April 20, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29655572/3d-modelling-and-printing-technology-to-produce-patient-specific-3d-models
#5
Nicolette S Birbara, James M Otton, Nalini Pather
BACKGROUND: A comprehensive knowledge of mitral valve (MV) anatomy is crucial in the assessment of MV disease. While the use of three-dimensional (3D) modelling and printing in MV assessment has undergone early clinical evaluation, the precision and usefulness of this technology requires further investigation. This study aimed to assess and validate 3D modelling and printing technology to produce patient-specific 3D MV models. METHODS: A prototype method for MV 3D modelling and printing was developed from computed tomography (CT) scans of a plastinated human heart...
November 10, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29594183/patient-specific-cardiac-phantom-for-clinical-training-and-preprocedure-surgical-planning
#6
Justin Laing, John Moore, Reid Vassallo, Daniel Bainbridge, Maria Drangova, Terry Peters
Minimally invasive mitral valve repair procedures including MitraClip® are becoming increasingly common. For cases of complex or diseased anatomy, clinicians may benefit from using a patient-specific cardiac phantom for training, surgical planning, and the validation of devices or techniques. An imaging compatible cardiac phantom was developed to simulate a MitraClip® procedure. The phantom contained a patient-specific cardiac model manufactured using tissue mimicking materials. To evaluate accuracy, the patient-specific model was imaged using computed tomography (CT), segmented, and the resulting point cloud dataset was compared using absolute distance to the original patient data...
April 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29569266/a-late-presentation-of-congenital-cardiac-anomaly-accessory-chordae-from-the-left-atrium-causing-severe-mitral-regurgitation
#7
Giovanni D'Onghia, Marta Martin, Maria Teresa Mancini, Silvia Quintarelli, Adele Cozza, Fabrizio Guarracini, Roberto Bonmassari
Mitral regurgitation secondary to accessory mitral valve (MV) chordae of the left atrium is an extremely rare congenital disease. A 85-year-old female (NYHA I-II) was hospitalized for investigations. An echocardiogram showed calcification of the MV with mild stenosis and moderate regurgitation. Transesophageal three-dimensional echocardiogram revealed a band-like structure extending from the distal third of the anterior wall of the left atrium to the MV. This accessory chordae determined severe systolic regurgitation and mild mitral stenosis...
March 22, 2018: Echocardiography
https://www.readbyqxmd.com/read/29564521/post-operative-assessment-of-the-arterial-switch-operation-a-comparison-of-magnetic-resonance-imaging-and-echocardiography
#8
Christopher R Broda, Svetlana B Shugh, Rohan B Parikh, YunFei Wang, Tobias R Schlingmann, Cory V Noel
After an arterial switch operation (ASO), serial imaging is necessary to monitor for maladaptive changes. We compared cardiac magnetic resonance imaging (CMR) to 2-D transthoracic echocardiography (TTE) in assessing post-operative ASO patients. We performed a retrospective review of patients at a single tertiary care center who underwent an ASO and subsequently had a CMR performed from 7/2010 to 7/2016. Those with single ventricle anatomy, congenitally corrected transposition of the great arteries, or previous atrial switch operation were excluded...
March 22, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29546472/transcatheter-pulmonary-valve-replacement-current-state-of-art
#9
REVIEW
Wail Alkashkari, Amani Alsubei, Ziyad M Hijazi
PURPOSE OF REVIEW: The past couple of decades have brought tremendous advances to the field of pediatric and adult congenital heart disease (CHD). Percutaneous valve interventions are now a cornerstone of not just the congenital cardiologist treating patients with congenital heart disease, but also-and numerically more importantly-for adult interventional cardiologists treating patients with acquired heart valve disease. Transcatheter pulmonary valve replacement (tPVR) is one of the most exciting recent developments in the treatment of CHD and has evolved to become an attractive alternative to surgery in patients with right ventricular outflow tract (RVOT) dysfunction...
March 15, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29525728/papillary-muscles-of-right-ventricle-morphological-variations-and-its-clinical-relevance
#10
Anubha Saha, Sanchita Roy
INTRODUCTION: Papillary muscle plays an important role in stabilizing the position of the tricuspid valve. Several pathologies can result in anatomical and functional abnormalities of the papillary muscles. The aim of the study is to deliberate the morphometry of papillary muscles in tricuspid valve and to analyze with the eminent research works previously done. MATERIALS AND METHODS: The study was carried out in 52 formalin-fixed adult apparently normal cadaveric hearts belonging to either sex obtained from the Department of Anatomy...
May 2018: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/29520990/preoperative-echocardiographic-measures-in-interrupted-aortic-arch-which-ones-best-predict-surgical-approach-and-outcome
#11
Ginnie Abarbanell, William L Border, Brian Schlosser, Gemma Morrow, Michael Kelleman, Ritu Sachdeva
OBJECTIVE: It is unclear whether neonates with interrupted aortic arch (IAA) and a smaller left ventricular outflow tract may have improved outcomes with a Yasui operation (ventricular outflow bypass procedure) over a primary complete repair. This study sought to identify preoperative echocardiographic parameters to differentiate which neonates may have improved outcomes with a primary vs Yasui operation. DESIGN: Patient demographics, cardiac surgery type, complications, need for reoperation and/or interventional catheterization, and date of last follow-up were collected on neonates who underwent a biventricular repair for IAA from 2003 to 2014...
March 9, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29511849/role-of-mdct-imaging-in-planning-mitral-valve-intervention
#12
REVIEW
Rominder Grover, Mickael Ohana, Chesnal Dey Arepalli, Stephanie L Sellers, John Mooney, Shaw-Hua Kueh, Ung Kim, Philipp Blanke, Jonathon A Leipsic
PURPOSE OF REVIEW: Recent advancements in transcatheter valvular interventions have resulted in a growing demand for advanced cardiac imaging to help guide these procedures. RECENT FINDINGS: Both echocardiography and multi-detector computed tomography have played essential roles in the maturation of transcatheter aortic valve replacement and are now building on these experiences and helping inform the nascent field of transcatheter mitral interventions. Advanced imaging is essential to aid in the diagnosis and determination of the mechanism of mitral regurgitation...
March 6, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29453592/patient-specific-registration-of-3d-ct-angiography-cta-with-x-ray-fluoroscopy-for-image-fusion-during-transcatheter-aortic-valve-implantation-tavi-increases-performance-of-the-procedure
#13
I Vernikouskaya, W Rottbauer, J Seeger, B Gonska, V Rasche, Jochen Wöhrle
OBJECTIVES: The aim of this study was to adapt patient-specifically a co-registration procedure for image fusion (IF) of a pre-interventional CT dataset with real-time X-ray (XR) fluoroscopy during transfemoral transcatheter aortic valve implantation (TAVI), enabling improved performance of the procedure. BACKGROUND: The ability to use 3D models of the respective anatomies to complement the anatomic information obtained by XR fluoroscopy and provide a greater degree of real-time anatomical guidance holds great potential for complex cardiac interventions, especially for TAVI procedures with cerebral protection...
February 16, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29440625/catheter-ablation-of-focal-atrial-tachycardia-using-remote-magnetic-navigation
#14
Mark Webster, Sanjeevan Pasupati, Nigel Lever, Martin Stiles
OBJECTIVE: This first-in-human study evaluated the safety and technical feasibility of the Tempo temporary cardiac pacing lead (BioTrace Medical), which includes a novel fixation mechanism and soft tip. BACKGROUND: Complications of temporary pacing leads include dislodgment, arrhythmias, and ventricular perforation. Temporary pacing applications have increased with transcatheter aortic valve replacement (TAVR) growth, for rapid pacing during balloon valvuloplasty (BAV) and valve deployment, and for periprocedural bradyarrhythmia support...
May 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29435997/coronary-venous-angioplasty-to-facilitate-transvenous-left-ventricular-lead-placement-a-single-center-13-year-experience
#15
Aaron B Hesselson, Sandeep Duggal, Michael Rukavina, Peter L Gallagher, Gery F Tomassoni
BACKGROUND: Barriers to successful left ventricular lead placement within the coronary venous anatomy may include focal stenoses, thromboses, phrenic nerve stimulation, vessel tortuosity, small vessel caliber, nonexcitable tissue, and valve presence. A large series describing the utilization of coronary venous angioplasty (CVAP) for relief of these issues is absent in the literature. OBJECTIVE: We report our experience on all patients treated with CVAP in a single-center 13-year experience...
April 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29425524/repair-techniques-for-mitral-valve-insufficiency-in-children
#16
REVIEW
Vladimiro L Vida, Lorenza Zanotto, Massimiliano Carrozzini, Massimo A Padalino, Giovanni Stellin
Congenital mitral valve (MV) dysplasia is a relatively rare and highly complex cardiac disease. We sought to provide a comprehensive analysis of the current surgical techniques for treating mitral valve insufficiency and the results of mitral valve repair at our institution. Between 1972 and 2017, 104 consecutive patients underwent surgical repair of congenital MV dysplasia-insufficiency at our institution. Among these, 59 patients presented with MV insufficiency (or prevalent MV insufficiency) and were part of the study...
March 2018: Seminars in Thoracic and Cardiovascular Surgery. Pediatric Cardiac Surgery Annual
https://www.readbyqxmd.com/read/29411679/pulmonary-atresia-with-an-intact-ventricular-septum-preoperative-physiology-imaging-and-management
#17
Sathish M Chikkabyrappa, Rohit S Loomba, Justin T Tretter
Pulmonary atresia with intact ventricular septum (PA-IVS) is a rare complex cyanotic congenital heart disease with heterogeneous morphological variation. Prenatal diagnosis allows for developing a safe plan for delivery and postnatal management. While transthoracic echocardiography allows for detailed delineation of the cardiac anatomy, additional imaging modalities such as computed tomography, magnetic resonance imaging, and catheterization may be necessary to further outline features of the cardiac anatomy, specifically coronary artery anatomy...
February 1, 2018: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29375223/use-of-internal-endoconduit-for-unfavorable-iliac-artery-anatomy-in-patients-undergoing-transcatheter-aortic-valve-replacement-a-single-center-experience
#18
Yung-Tsai Lee, Wei-Hsian Yin, Ho-Ping Yu, Jeng Wei
Background: Transfemoral (TF) access is associated with lower rates of surgical conversion and mortality compared with non-TF access for transcatheter aortic valve replacement (TAVR). Therefore, efforts should be made to make this procedure even less invasive, allowing more TAVR procedures to be performed through femoral access. We herein describe our single-center experience of using one-stage percutaneous internal endoconduits for TAVR in patients with unfavorable iliac artery anatomy...
January 2018: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/29368369/recent-developments-and-controversies-in-transcatheter-aortic-valve-implantation
#19
REVIEW
Noman Ali, Peysh A Patel, Steven J Lindsay
Interventional cardiology has been revolutionised by transcatheter aortic valve implantation (TAVI), which has become established as the benchmark treatment for severe aortic stenosis in patients at high risk for surgical aortic valve replacement (AVR). Increased procedural familiarity and progression in device technology has enabled improvements to be made in complication rates, which have led to a commensurate expansion in the use of TAVI; it is now a viable alternative to AVR in patients at intermediate surgical risk, and has been used in cohorts such as those with bicuspid aortic valves or pure, severe aortic regurgitation...
January 25, 2018: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29366576/redefinition-of-tricuspid-valve-structures-for-successful-ring-annuloplasty
#20
Noriyasu Kawada, Hirokuni Naganuma, Koichi Muramatsu, Hatsue Ishibashi-Ueda, Ko Bando, Kazuhiro Hashimoto
BACKGROUND: Although numerous reports have described suturing techniques for tricuspid annuloplasty, most studies were not based on a detailed anatomy of the tricuspid annulus. Thus, the definition of the tricuspid commissures remains unclear. This study aimed to clearly define the commissures and leaflets of the tricuspid valve and subvalvular structures, and to define a standard method for tricuspid annuloplasty. METHODS: In 27 normal heart specimens without cardiac disease, the tricuspid commissure was defined using indentations of the leaflets as a point, not an area, and the length of each tricuspid annulus was measured...
April 2018: Journal of Thoracic and Cardiovascular Surgery
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