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Cardiac valve anatomy

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https://www.readbyqxmd.com/read/27873373/cardiac-output-and-blood-flow-redistribution-in-the-fetus-with-d-loop-transposition-of-the-great-arteries-and-intact-ventricular-septum-insights-into-the-pathophysiology
#1
Max E Godfrey, Kevin G Friedman, Monika Drogosz, Abraham M Rudolph, Wayne Tworetzky
OBJECTIVES: Although the postnatal physiology of D-loop transposition of the great arteries with intact ventricular septum (DTGA-IVS) is well established, little is known about fetal DTGA-IVS. In the normal fetus, the pulmonary valve (PV) is larger than the aortic valve (AoV), there is exclusive right to left flow at the foramen ovale (FO) and ductus arteriosus (DA), and the left ventricle (LV) ejects 40% of combined ventricular output (CVO) through the aorta, primarily to the brain. In DTGA-IVS, the LV ejects O2 -rich blood to the pulmonary artery, theoretically leading to pulmonary vasodilation, increased branch pulmonary arterial flow and reduced DA flow...
November 22, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27866077/the-concept-of-double-inlet-double-outlet-right-ventricle-a-distinct-congenital-heart-disease
#2
Veronica Spadotto, Carla Frescura, Siew Yen Ho, Gaetano Thiene
The aim of this study was to estimate the incidence and to analyze the anatomy of double inlet-double outlet right ventricle complex and its associated cardiac anomalies in our autopsy series. Among the 1640 hearts with congenital heart disease of our Anatomical Collection, we reviewed the specimens with double inlet-double outlet right ventricle, according to the sequential-segmental analysis, identifying associated cardiac anomalies and examining lung histology to assess the presence of pulmonary vascular disease...
September 25, 2016: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/27843561/predictors-of-poor-outcome-among-children-with-heterotaxy-syndrome-a-retrospective-review
#3
Eiméar McGovern, Eoin Kelleher, James E Potts, John O'Brien, Kevin Walsh, Lars Nolke, Colin J McMahon
OBJECTIVE: To determine predictors of poor outcome in patients with heterotaxy syndrome. METHODS: A retrospective review of children with heterotaxy syndrome, in a single tertiary paediatric cardiology centre, was conducted between 1 January 1997 and 1 January 2014 to determine predictors of poor outcome. Poor outcome was defined as death, cardiac transplantation or New York Heart Association (NYHA) functional class III or IV. RESULTS: There were 35 patients diagnosed with heterotaxy syndrome, 17 of whom were diagnosed antenatally...
2016: Open Heart
https://www.readbyqxmd.com/read/27828828/anatomic-relationship-between-left-coronary-artery-and-left-atrium-in-patients-undergoing-atrial-fibrillation-ablation
#4
Matteo Anselmino, Federica Torri, Federico Ferraris, Leonardo Calò, Davide Castagno, Sebastiano Gili, Chiara Rovera, Carla Giustetto, Fiorenzo Gaita
BACKGROUND: Atrial fibrillation transcatheter ablation (TCA) is, within available atrial fibrillation rhythm control strategies, one of the most effective. To potentially improve ablation outcome in case of recurrent atrial fibrillation after a first procedure or in presence of structural myocardial disease, isolation of the pulmonary veins may be associated with extensive lesions within the left atrium. To avoid rare, but potentially life-threatening, complications, thorough knowledge and assessment of left atrium anatomy and its relation to structures in close proximity are, therefore, mandatory...
November 8, 2016: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/27793402/one-year-outcomes-of-transcatheter-aortic%C3%A2-valve-implantation-using-the-direct%C3%A2-aortic%C3%A2-approach
#5
Giuseppe Bruschi, Marian Branny, Molly Schiltgen, Federica Ettori, Bertrand Marcheix, Hafid Amrane, Hasan Bushnaq, M Erwin S H Tan, Uday Trivedi, Piotr Branny, Silvio Klugmann, Giuseppe Coletti, Nicolas Dumonteil, Fabiano Porta, Anna Nordell, Neil Moat
BACKGROUND: The direct aortic (DA) approach allows for transcatheter aortic valve implantation (TAVI) in patients with difficult peripheral vascular anatomy. The CoreValve ADVANCE Direct Aortic (ADVANCE DA) study was performed to assess the outcomes of DA TAVI with the CoreValve System (Medtronic, Minneapolis, MN) in routine practice. METHODS: Patients were selected for the DA approach by local cardiac surgical teams, and TAVI was performed with patients under general anesthesia...
October 25, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27751260/bicuspid-aortic-valve-with-severe-stenosis-and-ruptured-sinus-of-valsalva-aneurysm-to-left-ventricle
#6
Deepak Ameta, Rajiv Bharat Kharwar, Pallavi Aga, Rishi Sethi, Sharad Chandra, Sudhanshu Kumar Dwivedi, Varun Shankar Narain, Ram Kirti Saran
Bicuspid aortic valve (BAV) is a common congenital cardiac anomaly, and rarely, it is associated with sinus of Valsalva aneurysms (SOVAs). And very infrequently, these SOVAs rupture into left side of heart. We hereby report a case of 12-year-old male with BAV with severe aortic stenosis with a large SOVA that ruptured into the left side of the heart. The anatomy was delineated with multimodality imaging; initially with two-dimensional trans-thoracic echocardiography (TTE), and later on with three-dimensional TTE and with multi detector computed tomography...
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27680418/contrast-enhanced-high-pitch-computed-tomography-in-pediatric-patients-without-electrocardiography-triggering-and-sedation-comparison-of-cardiac-image-quality-with-conventional-multidetector-computed-tomography
#7
Michael Esser, Sergios Gatidis, Matthias Teufel, Inés Ketelsen, Konstantin Nikolaou, Jürgen F Schäfer, Ilias Tsiflikas
OBJECTIVE: The aim of this study was to compare image quality of anatomical cardiac details without electrocardiography triggering, sedation, or heart rate-regulating drugs in contrast-enhanced pediatric chest computed tomography (CT), using high-pitch CT (HPCT) versus conventional pitch-mode technique (multidetector CT [MDCT]). METHODS: After written informed consent, 55 patients (median age, 11 years; range, 3-17 years) were prospectively included in this institutional review board-approved study...
September 27, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27662847/implantation-of-the-medtronic-harmony-transcatheter-pulmonary-valve-improves-right-ventricular-size-and-function-in-an-ovine-model-of-postoperative-chronic-pulmonary-insufficiency
#8
Rosanne C Schoonbeek, Satoshi Takebayashi, Chikashi Aoki, Toru Shimaoka, Matthew A Harris, Gregory L Fu, Timothy S Kim, Yoav Dori, Jeremy McGarvey, Harold Litt, Wobbe Bouma, Gerald Zsido, Andrew C Glatz, Jonathan J Rome, Robert C Gorman, Joseph H Gorman, Matthew J Gillespie
BACKGROUND: Pulmonary insufficiency is the nexus of late morbidity and mortality after transannular patch repair of tetralogy of Fallot. This study aimed to establish the feasibility of implantation of the novel Medtronic Harmony transcatheter pulmonary valve (hTPV) and to assess its effect on pulmonary insufficiency and ventricular function in an ovine model of chronic postoperative pulmonary insufficiency. METHODS AND RESULTS: Thirteen sheep underwent baseline cardiac magnetic resonance imaging, surgical pulmonary valvectomy, and transannular patch repair...
October 2016: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/27642299/myocardial-infarction-and-aortic-root-mycotic-aneurysm-complicating-aortic-valve-endocarditis-utility-of-cardiac-ct
#9
Aimee E Moores, Michael S Cahill, Todd C Villines
Aortic mycotic aneurysms are a rare but life-threatening potential complication of infective endocarditis. Rapid deterioration of the vascular wall in highly focal areas makes these pseudoaneurysms particularly prone to rupture, resulting in uncontrolled aortic hemorrhage. While computed tomography angiography (CTA) is the imaging modality of choice for the evaluation of mycotic aneurysms, it is not routinely performed in patients with known or suspected infective endocarditis (IE). However, current valvular heart disease guidelines support the use of cardiac CTA in cases of IE and suspected perivalvular extension when there is inadequate or ambiguous visualization on echocardiography...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27640048/mitral-valve-in-valve-and-valve-in-ring-technical-aspects-and-procedural-outcomes
#10
Danny Dvir, John Webb
There is a growing practice of transcatheter treatment of failed mitral valves after cardiac surgery, including valve-in-valve and valve-in-ring. Although commonly successful, these procedures can be associated with device malposition (including delayed malposition) and elevated post-procedural gradients (especially when performed inside small surgical valves). Valve-in-ring procedures have elevated risks of left ventricular outflow tract obstruction and post-procedural regurgitation. Careful patient selection and meticulous evaluation of patient anatomy and surgical implant characteristics are essential to achieve optimal clinical results with mitral valve-in-valve and valve-in-ring implantation...
September 18, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27640046/fluoroscopic-heart-chamber-anatomy-the-case-for-imaging-modality-independent-terminology
#11
Nicolo Piazza, Darren Mylotte, Pascal Theriault Lauzier
Interventional cardiologists have traditionally relied upon fluoro-scopic imaging for percutaneous coronary interventions. Transcatheter structural heart interventions, however, require additional imaging modalities such as echocardiography and multislice computed tomography (MSCT) for pre-, intra- and post-procedural assistance. MSCT has emerged as the critical imaging modality for patient and device selection prior to transcatheter structural heart interventions. MSCT is unique as it provides a complete 3-dimensional (3D) dataset of the heart and vasculature that is amenable to multiplanar reconstruction for 2-dimensional (2D) or volume-rendered interpretations...
September 18, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27635073/clinical-experience-with-the-subcutaneous-implantable-cardioverter-defibrillator-in-adults-with-congenital-heart-disease
#12
Jeremy P Moore, Blandine Mondésert, Michael S Lloyd, Stephen C Cook, Ali N Zaidi, Robert H Pass, Anitha S John, Frank A Fish, Kevin M Shannon, Jamil A Aboulhosn, Paul Khairy
BACKGROUND: Sudden cardiac death is a major contributor to mortality for adults with congenital heart disease. The subcutaneous implantable cardioverter-defibrillator (ICD) has emerged as a novel tool for prevention of sudden cardiac death, but clinical performance data for adults with congenital heart disease are limited. METHODS AND RESULTS: A retrospective study involving 7 centers over a 5-year period beginning in 2011 was performed. Twenty-one patients (median 33...
September 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27628295/current-clinical-applications-of-three-dimensional-echocardiography-when-the-technique-makes-the-difference
#13
REVIEW
Elena Surkova, Denisa Muraru, Patrizia Aruta, Gabriella Romeo, Jurate Bidviene, Diana Cherata, Luigi P Badano
Advances in ultrasound, computer, and electronics technology have permitted three-dimensional echocardiography (3DE) to become a clinically viable imaging modality, with significant impact on patient diagnosis, management, and outcome. Thanks to the inception of a fully sampled matrix transducer for transthoracic and transesophageal probes, 3DE now offers much faster and easier data acquisition, immediate display of anatomy, and the possibility of online quantitative analysis of cardiac chambers and heart valves...
November 2016: Current Cardiology Reports
https://www.readbyqxmd.com/read/27625682/conduction-disturbances-after-transcatheter-aortic-valve-implantation-procedures-predictors-and-management
#14
REVIEW
Krzysztof Wilczek, Rafał Reguła, Kamil Bujak, Piotr Chodór, Michał Długaszek, Mariusz Gąsior
Transcatheter aortic valve implantation (TAVI) has become a safe and efficient alternative to cardiac surgery in patients with severe aortic stenosis. In many countries the number of performed TAVI procedures equals the number of surgical implantations. Indications for TAVI are becoming more liberal, allowing a wider spectrum of patients to benefit from the advantages of transcatheter therapy. Due to its invasive nature, TAVI is associated with some complications such as conduction disturbances. Although these disturbances are usually not lethal, they have a great influence on patients' state and long term-survival...
2016: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/27612379/a-quadricuspid-aortic-valve-as-seen-by-cardiac-magnetic-resonance-imaging
#15
James Jones, Robert Liotta, Maureen Hood, Alexander Bustamante
We report a case of a 35-year-old active duty male with a rare quadricuspid aortic valve identified via transthoracic echocardiography following the detection of an incidental grade I/VI diastolic murmur. Further characterization of the anatomical findings and aortic valve flow dynamics were evaluated with cardiac magnetic resonance imaging. Accurate assessment of the various valve morphologies is essential, as it guides surgical treatment options to correct the defect. Our case highlights the complimentary role of cardiac magnetic resonance imaging in defining the anatomy and functional consequences of a quadricuspid aortic valve...
September 2016: Military Medicine
https://www.readbyqxmd.com/read/27591383/iatrogenic-ventricular-septal-defect-a-rare-complication-of-surgical-reconstruction-of-mitral-paravalvular-dehiscence
#16
Aref Rashed, Karoly Gombocz, Janos Fulop, Nasri Alotti
INTRODUCTION: Iatrogenic ventricular septal defect is a rare complication after the surgical replacement of cardiac valves. Small defects may have no hemodynamic significance or remain unremarked at the end of the surgical procedure. Understanding of the valvular anatomy alone is not always enough to avoid such complications, especially in the hands of young surgeons. PRESENTATION OF CASE: We present a case of iatrogenic ventricular septal defect that developed early after the surgical closure of a hemodynamically significant mitral paravalvular leak...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27563552/when-and-how-to-replace-the-aortic-arch-for-type-a-dissection
#17
Roberto Di Bartolomeo, Alessandro Leone, Luca Di Marco, Davide Pacini
Acute type A aortic dissection (AAAD) remains one of the most challenging diseases in cardiothoracic surgery and despite numerous innovations in medical and surgical management, early mortality remains high. The standard treatment of AAAD requires emergency surgery of the proximal aorta, preventing rupture and consequent cardiac tamponade. Resection of the primary intimal tear and repair of the aortic root and aortic valve are well-established surgical principles. However, the dissection in the aortic arch and descending untreated aorta remains...
July 2016: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27550715/evaluation-of-fetal-cardiac-valve-anomalies-by-four-dimensional-echocardiography-with-spatiotemporal-image-correlation-4dstic
#18
Guyue Hu, Ying Zhang, Miao Fan, Meilian Wang, Faiza Amber Siddiqui, Yu Wang, Wei Sun, Feifei Sun, Dongyu Zhang, Wenjia Lei, Xue Sun
BACKGROUND: Prenatal diagnosis of cardiac valve anomalies challenged most screening sonographers. The purpose of the study was to evaluate the use of four-dimensional echocardiography with spatiotemporal image correlation (4DSTIC) in detecting normal and abnormal fetal cardiac valves. METHODS: Forty-three cases of confirmed cardiac valve anomalies identified by two-dimensional echocardiography (2DE) were retrospectively reviewed in this study. Additional 121 confirmed normal fetuses were included as controls...
November 2016: Echocardiography
https://www.readbyqxmd.com/read/27547548/computational-fluid-dynamics-modelling-of-left-valvular-heart-diseases-during-atrial-fibrillation
#19
Stefania Scarsoglio, Andrea Saglietto, Fiorenzo Gaita, Luca Ridolfi, Matteo Anselmino
BACKGROUND: Although atrial fibrillation (AF), a common arrhythmia, frequently presents in patients with underlying valvular disease, its hemodynamic contributions are not fully understood. The present work aimed to computationally study how physical conditions imposed by pathologic valvular anatomy act on AF hemodynamics. METHODS: We simulated AF with different severity grades of left-sided valvular diseases and compared the cardiovascular effects that they exert during AF, compared to lone AF...
2016: PeerJ
https://www.readbyqxmd.com/read/27541718/the-use-of-standard-gastrointestinal-endoscopic-ultrasound-to-assess-cardiac-anatomy
#20
Kinza Sentissi, Mandeep S Sawhney, Douglas Pleskow, Paul Sepe, Jose M Mella, Benjamin Kwittken, Gyanprakash Ketwaroo, Balachundhar Subramaniam
In this prospective observational study, conducted at an academic medical center, we evaluated the feasibility of performing a basic transesophageal echocardiography (TEE) examination using endoscopic ultrasound (EUS) technology to determine what cardiac structures could be assessed. This may be potentially beneficial during hemodynamic emergencies in the endoscopy suite resulting from hypovolemia, depressed ventricular function, aortic dissection, pericardial effusions, or aortic stenosis. Of the 20 patients enrolled, 18 underwent EUS with a linear echoendoscope for standard clinical indications followed by a cardiac assessment performed under the guidance of a TEE-certified cardiac anesthesiologist...
September 2016: Anesthesia and Analgesia
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