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cardiac anatomy

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https://www.readbyqxmd.com/read/29352414/transthoracic-echocardiographic-evaluation-of-the-heart-and-great-vessels
#1
REVIEW
André Y Denault, Stéphane Langevin, Martin R Lessard, Jean Francois Courval, Georges Desjardins
PURPOSE: Transthoracic examination of the heart and great vessels is an essential skill that allows the anesthesiologist to evaluate cardiac function. In this article, we describe a pragmatic technique to obtain the essential views to evaluate normal or abnormal cardiac function and to appreciate great vessel anatomy and physiology. PRINCIPAL FINDINGS: The cardiac anatomy and function can be described using standard parasternal, apical, and subcostal views. These windows can also be used to assess the aorta, pulmonary artery, and vena cavae; however, other transthoracic and abdominal windows can be used to complete the evaluation of the great vessels...
January 19, 2018: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29350784/novel-cardiovascular-magnetic-resonance-cmr-oxygenation-approaches-in-understanding-pathophysiology-of-cardiac-diseases
#2
Karthigesh Sree Raman, Gaetano Nucifora, Joseph B Selvanayagam
Cardiovascular Magnetic Resonance Imaging (CMR) permits accurate phenotyping of many cardiac diseases. CMR's inherent advantages are its non-invasive nature, lack of ionizing radiation and high accuracy and reproducibility. Furthermore, it is able to assess many aspects of cardiac anatomy, structure and function. Specifically, it can characterize myocardial tissue, myocardial function, myocardial mass, myocardial blood flow/perfusion, irreversible and reversible injury, all with a high degree of accuracy and reproducibility...
January 19, 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29350321/sliding-to-predict-vision-based-beating-heart-motion-estimation-by-modeling-temporal-interactions
#3
Angelica I Aviles-Rivero, Samar M Alsaleh, Alicia Casals
PURPOSE: Technical advancements have been part of modern medical solutions as they promote better surgical alternatives that serve to the benefit of patients. Particularly with cardiovascular surgeries, robotic surgical systems enable surgeons to perform delicate procedures on a beating heart, avoiding the complications of cardiac arrest. This advantage comes with the price of having to deal with a dynamic target which presents technical challenges for the surgical system. In this work, we propose a solution for cardiac motion estimation...
January 19, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29344827/molecular-imaging-of-cardiac-remodelling-after-myocardial-infarction
#4
REVIEW
Daniel Curley, Begoña Lavin Plaza, Ajay M Shah, René M Botnar
Myocardial infarction and subsequent heart failure is a major health burden associated with significant mortality and morbidity in western societies. The ability of cardiac tissue to recover after myocardial infarction is affected by numerous complex cellular and molecular pathways. Unbalance or failure of these pathways can lead to adverse remodelling of the heart and poor prognosis. Current clinical cardiac imaging modalities assess anatomy, perfusion, function, and viability of the myocardium, yet do not offer any insight into the specific molecular pathways involved in the repair process...
January 17, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29326834/ablation-of-atrial-fibrillation-in-patients-with-congenital-heart-disease
#5
Marwan M Refaat, Jad Ballout, Moussa Mansour
With improved surgical techniques and medical management for patients with congenital heart diseases, more patients are living longer and well into adulthood. This improved survival comes with a price of increased morbidity, mainly secondary to increased risk of tachyarrhythmias. One of the major arrhythmias commonly encountered in this subset of cardiac patients is AF. Similar to the general population, the risk of AF increases with advancing age, and is mainly secondary to the abnormal anatomy, abnormal pressure and volume parameters in the hearts of these patients and to the increased scarring and inflammation seen in the left atrium following multiple surgical procedures...
December 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/29314646/right-ventricular-contractile-reserve-in-tetralogy-of-fallot-patients-with-pulmonary-regurgitation
#6
Clotilde Kingsley, Saad Ahmad, John Pappachan, Sujata Khambekar, Thomas Smith, Diane Gardiner, James Shambrook, Shankar Baskar, Ryan Moore, Gruschen Veldtman
BACKGROUND: The right ventricular (RV) contractile reserve is a measure of the dynamic function of the RV and is a sensitive indicator of volume load. This can be measured noninvasively using the tricuspid annular plane systolic excursion (TAPSE) during exercise. We studied the RV contractile reserve of patients after tetralogy of Fallot (TOF) repair with varying degree of RV dilation and pulmonary regurgitation (PR), and compared them to a control group. METHODS: Twenty-six patients who had undergone TOF repair (mean age 29 ± 10 years) were identified and stratified into three group based on the presence and severity of RV dilation and PR...
January 5, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29305732/anatomy-of-the-retro-oesophageal-major-aortopulmonary-collateral-arteries-in-patients-with-pulmonary-atresia-with-ventricular-septal-defect-results-from-preoperative-cta
#7
Qianjun Jia, Jianzheng Cen, Jinglei Li, Jian Zhuang, Hui Liu, Qun Zhang, Xiaoqing Liu, Meiping Huang, Changhong Liang
OBJECTIVES: To assess the frequency and anatomy of retro-oesophageal aortopulmonary collateral arteries (REMs) in patients with pulmonary atresia with ventricular septal defect and major aortopulmonary collateral arteries (PA-VSD-MAPCAs). METHODS: A total of 130 consecutive PA-VSD-MAPCA patients with preoperative CT angiography (CTA) data who underwent cardiac surgery were included. A detailed analysis of MAPCA anatomy was performed using CTA. RESULTS: A REM was identified in 82/130 included patients (63 %)...
January 5, 2018: European Radiology
https://www.readbyqxmd.com/read/29297105/anatomical-repair-conversion-after-bidirectional-cavopulmonary-shunt-for-complex-cardiac-anomalies-palliation-is-not-a-one-way-path
#8
Qiuming Chen, Shoujun Li, Zhongdong Hua, Hao Zhang, Keming Yang, Huawei Gao, Kai Ma, Sen Zhang, Lei Qi
Complex cardiac anomalies are sometimes channeled toward Fontan palliation for various reasons. Nevertheless, anatomical repair after bidirectional cavopulmonary shunt may be another option with theoretical benefits. In this study, we report our experience with anatomical repair conversion in challenging patients who had been palliated with bidirectional cavopulmonary shunt. Retrospective review was conducted in patients who underwent anatomical repair conversion from prior bidirectional cavopulmonary shunt palliation between January 2008 and March 2016...
January 3, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29290421/patient-specific-three-dimensional-printing-for-kommerell-s-diverticulum
#9
Xiaoning Sun, Hongqiang Zhang, Kai Zhu, Chunsheng Wang
BACKGROUND: Kommerell's diverticulum is a complex congenital malformation of aorta. Three-dimensional (3D) printing is an innovative manufacturing process that allows computer-assisted conversion of 3D imaging data into physical "printouts." The aim of this study was to explore the feasibility and impact of using patient-specific 3D-printed cardiac prototypes derived from computed tomography data on surgical decision-making and preoperative planning for Kommerell's diverticulum. METHODS: From April to August 2017, five patients with Kommerell's diverticulum were diagnosed and chosen for study...
December 26, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29287139/fetal-interventions-for-structural-heart-disease
#10
David N Schidlow, Lindsay Freud, Kevin Friedman, Wayne Tworetzky
Fetal cardiac intervention (FCI) offers the potential to alter in utero anatomy and physiology. For aortic stenosis with evolving hypoplastic left heart syndrome and pulmonary atresia with intact ventricular septum with evolving hypoplastic right heart syndrome, FCI may result in maintenance of a biventricular circulation, thus avoiding single-ventricle palliation and its attendant complications. In the case of hypoplastic left heart syndrome with intact atrial septum, FCI may ameliorate in utero pathophysiology and portend a more favorable postnatal prognosis...
December 2017: Echocardiography
https://www.readbyqxmd.com/read/29287138/4d-fetal-echocardiography-an-update
#11
Greggory R DeVore, Gary Satou, Mark Sklansky
With the introduction of the electronic 4-dimensional and spatial-temporal image Correlation (e-STIC), it is now possible to obtain large volume datasets of the fetal heart that are virtually free of artifact. This allows the examiner to use a number of imaging modalities when recording the volumes that include two-dimensional real time, power and color Doppler, and B-flow images. Once the volumes are obtained, manipulation of the volume dataset allows the examiner to recreate views of the fetal heart that enable examination of cardiac anatomy...
December 2017: Echocardiography
https://www.readbyqxmd.com/read/29287137/maternal-hyperoxygenation-a-potential-therapy-for-congenital-heart-disease-in-the-fetuses-a-systematic-review-of-the-current-literature
#12
Jennifer Co-Vu, Dalia Lopez-Colon, Himesh V Vyas, Natalie Weiner, Curt DeGroff
OBJECTIVES: To assess efficacy, safety, outcomes, and intrauterine complications following maternal hyperoxygenation (MH) therapy in fetuses with congenital heart disease (CHD). METHODS: A systematic review was performed following an electronic search of databases. Articles were published before January 1, 2017, in an English-language and non-English-language journals (with English translations), and included human fetuses and expectant mothers with a fetal diagnosis of CHD who received MH...
December 2017: Echocardiography
https://www.readbyqxmd.com/read/29280176/-y-sign-at-the-level-of-the-3-vessel-and-trachea-view-an-effective-fetal-marker-of-aortic-dextroposition-anomalies-in-the-first-trimester
#13
Marcin Pasternok, Agnieszka Nocun, Anna Knafel, Mariusz Grzesiak, Maciej Orzechowski, Katarzyna Konarska, Artur Ludwin, Inga Ludwin, Piotr Zymroz, Anna Parzynska, Marcin Wiechec
OBJECTIVES: The "Y sign" at the level of the 3-vessel and trachea view corresponds to thinning of main pulmonary artery and arterial duct and a dilated transverse aortic arch. The purpose of this study was to evaluate the Y sign for the diagnosis of aortic dextroposition anomalies at the time of the first-trimester scan and to assess the screening performance of only the Y sign, only abnormal left axis deviation (axis sign), and their combination for the diagnosis of aortic dextroposition anomalies...
December 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29277300/innovations-in-preoperative-planning-insights-into-another-dimension-using-3d-printing-for-cardiac-disease
#14
REVIEW
Kanwal M Farooqi, Feroze Mahmood
Two-dimensional visualization of complex congenital heart disease has limitations in that there is variation in the interpretation by different individuals. Three-dimensional printing technology has been in use for decades but is currently becoming more commonly used in the medical field. Congenital heart disease serves as an ideal pathology to employ this technology because of the variation of anatomy between patients. In this review, the authors aim to discuss basics of applicability of three-dimensional printing, the process involved in creating a model, as well as challenges with establishing utility and quality...
November 23, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29275549/-research-progress-of-sudden-cardiac-death-in-forensic-medicine
#15
REVIEW
D Zheng, K Yin, J J Zheng, N Zhou, Y Liu, X Fu, J D Cheng
Sudden death (SD) is a special kind of death owing to disease, which severely threatening the lives of community population. As the most common type of SD, sudden cardiac death (SCD) has always been a crucial content of identification and research in forensic pathology. This article reviews the research progress from the aspects of epidemiology, morphology, molecular pathology and virtual anatomy of SCD in forensic medicine, so as to provide a reference for the morphological identification, determination of cause of death, and integrated control of this kind of SD...
October 2017: Fa Yi Xue za Zhi
https://www.readbyqxmd.com/read/29250293/hypothetical-anatomy-of-brugada-phenomenon-long-qt-sine-long-qt-syndrome-implicating-morphologically-undefined-specific-brugada-s-myocells
#16
REVIEW
Petras Stirbys
The Brugada syndrome (BrS) is associated with increased risk of ventricular arrhythmias and sudden cardiac death. It generates genetically mediated arrhythmias posing a true pathophysiological challenge. In search of the similarities between BrS and long QT syndrome some novel insights are suggested. In patients with BrS the duration of QT interval is usually normal. Some investigators have found prolonged QT interval in the syndrome's natural course or the duration of QT segment have been extended by provocative tests unmasking BrS...
April 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29244161/the-impact-of-coronary-anomalies-on-the-outcome-in-aortic-valve-surgery-comparison-of-bicuspid-aortic-valve-versus-tricuspid-aortic-valve-morphotype
#17
Shiho Naito, Johannes Petersen, Hermann Reichenspurner, Evaldas Girdauskas
OBJECTIVES: The association of anomalous anatomy of coronary arteries and bicuspid aortic valve (BAV) has been sporadically reported. Our aim was to evaluate the prevalence of coronary anomalies between BAV and tricuspid aortic valve (TAV) and to analyse their impact on major adverse cardiac events during and after aortic valve surgery. METHODS: A total of 1099 consecutive patients who received preoperative coronary evaluation and elective aortic valve replacement/repair between January 2013 and July 2016 at our institution were involved...
December 12, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29242981/a%C3%A2-new-look-at-the-heart-novel-imaging-techniques
#18
REVIEW
C M Johnston, A J Krafft, M F Russe, E A Rog-Zielinska
The development and successful implementation of cutting-edge imaging technologies to visualise cardiac anatomy and function is a key component of effective diagnostic efforts in cardiology. Here, we describe a number of recent exciting advances in the field of cardiology spanning from macro- to micro- to nano-scales of observation, including magnetic resonance imaging, computed tomography, optical mapping, photoacoustic imaging, and electron tomography. The methodologies discussed are currently making the transition from scientific research to routine clinical use, albeit at different paces...
December 14, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/29237361/hybrid-endovascular-aortic-arch-reconstruction-for-acute-aortic-dissection-an-endovascular-bridge-technique-for-complex-anatomy
#19
Michael P Rogers, Sophie M Reskin, Adam Ubert, Matthew C Black, Kendra J Grubb
Acute type A aortic dissections starting at the arch pose a challenge for cardiac surgeons. Open surgical repair requires deep hypothermic circulatory arrest for arch reconstruction and is associated with significant morbidity and mortality. Hybrid aortic repair techniques, with open arch debranching and thoracic endovascular aortic repair, have been employed in high-risk cases and challenging aortic pathology. Herein, we present a case of a 33-year-old African American male with a history of open thoracoabdominal aortic reconstruction and femoral-femoral artery bypass for a type B dissection who subsequently presented with new-onset chest pain and was found to have a retrograde type A dissection of a bovine arch with multiple dissection flaps and possible contrast extravasation on chest computed tomography...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29236953/applications-of-cardiac-computed-tomography-in-electrophysiology-intervention
#20
S Liddy, U Buckley, H K Kok, B Loo, B Glover, G R Dhillon, O Buckley
Cardiac electrophysiology is an evolving specialty that has seen rapid advances in recent years. Concurrently, there has been much progress in the field of cardiac imaging. Electrophysiologists are increasingly requesting cross-sectional imaging in advance of many procedures. Pulmonary vein isolation and left atrial appendage (LAA) occlusion are now an established treatment options for atrial fibrillation. In patients undergoing pulmonary vein isolation, applications of computed tomography (CT) include evaluating the left atrial and pulmonary venous anatomy, excluding LAA thrombus and assessing for pulmonary vein stenosis...
December 9, 2017: European Heart Journal Cardiovascular Imaging
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