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https://www.readbyqxmd.com/read/28212053/transthoracic-echocardiography-pitfalls-and-limitations-as-delineated-at-cardiac-ct-and-mr-imaging
#1
Sachin B Malik, Natalie Chen, Rex A Parker, Joe Y Hsu
Transthoracic echocardiography ( TTE transthoracic echocardiography ) is a critical tool in the field of clinical cardiology. It often serves as one of the first-line imaging modalities in the evaluation of cardiac disease owing to its low cost, portability, widespread availability, lack of ionizing radiation, and ability to evaluate both anatomy and function of the heart. Consequently, a large majority of patients undergoing a cardiac computed tomography (CT) or magnetic resonance (MR) imaging examination will have a TTE transthoracic echocardiography available for review...
February 17, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28191656/utility-and-safety-of-combined-interventional-catheterization-and-electrophysiology-procedures-in-a-children-s-hospital
#2
S Yukiko Asaki, Jeffrey W Orcutt, Christina Y Miyake, Henri Justino, Caridad M DE LA Uz, Jeffrey J Kim, Santiago O Valdes, Athar M Qureshi
BACKGROUND: Interventional cardiac catheterization (cath) and electrophysiology (EP) procedures are not routinely performed together. There are several perceived barriers affecting this practice, though there are also advantages for both the patient and practitioner to a combined approach. METHODS: This was a single center retrospective study reviewing combined cath and EP procedures with a pre-procedural intention to intervene at Texas Children's Hospital from 2001 to 2014...
February 13, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28185167/challenges-with-evidence-based-management-of-stable-ischemic-heart-disease
#3
REVIEW
Amit V Patel, Sripal Bangalore
PURPOSE OF REVIEW: Stable ischemic heart disease (SIHD) is a highly prevalent condition associated with increased costs, morbidity, and mortality. Management goals of SIHD can broadly be thought of in terms of improving prognosis and/or improving symptoms. Treatment options include medical therapy as well as revascularization, either with percutaneous coronary intervention or coronary artery bypass grafting. Herein, we will review the current evidence base for treatment of SIHD as well as its challenges and discuss ongoing studies to help address some of these knowledge gaps...
February 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28179595/outcomes-of-totally-endoscopic-atrial-septal-defect-closure-using-a-glutaraldehyde-treated-autologous-pericardial-patch
#4
Hidefumi Nishida, Daisuke Nakatsuka, Yuji Kawano, Nobuhiko Hiraiwa, Shuichiro Takanashi, Minoru Tabata
BACKGROUND: We evaluated the outcomes of totally endoscopic minimally invasive surgery for atrial septal defect (ASD) using a glutaraldehyde-treated autologous pericardial patch in the transcatheter interventional era.Methods and Results:We retrospectively reviewed 37 consecutive patients who underwent totally endoscopic ASD closure with a glutaraldehyde-treated autologous pericardial patch between June 2011 and April 2015. All patients had been deferred from catheter-based intervention for clinical or anatomical reasons...
February 8, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28167079/anatomy-for-ventricular-tachycardia-ablation-in-structural-heart-disease
#5
REVIEW
Jason S Bradfield, Kalyanam Shivkumar
Ablation of ventricular tachycardia (VT) in the setting of structural heart disease, previously reserved for highly experienced specialized centers, is being performed at more centers internationally as cardiac electrophysiologists gain advanced training. Interventional cardiac electrophysiologists need a high level of anatomic knowledge to guide a procedure that can carry significant risk. Understanding cardiac anatomy improves the chance of procedural success and also the likelihood of appropriate decision making if complications are encountered...
March 2017: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/28160343/the-differences-between-bisecting-and-off-center-cuts-of-the-aortic-root-the-three-dimensional-anatomy-of-the-aortic-root-reconstructed-from-the-living-heart
#6
Shumpei Mori, Robert H Anderson, Natsuko Tahara, Yu Izawa, Takayoshi Toba, Sei Fujiwara, Shinsuke Shimoyama, Yoshiaki Watanabe, Tatsuya Nishii, Atsushi K Kono, Satoru Takahashi, Ken-Ichi Hirata
BACKGROUND: It is axiomatic that the diameter of the virtual basal ring of the aortic root, which is elliptical rather than circular, will differ when assessed using between bisecting as opposed to off-center cuts. Such differences, however, which pertain directly to echocardiographic assessments of the so-called valvar annulus, have yet to be systematically explored. METHODS: We retrospectively analyzed 30 patients undergoing coronary computed tomographic angiography, measuring the virtual basal ring diameter using routine multiplanar reconstructions...
February 3, 2017: Echocardiography
https://www.readbyqxmd.com/read/28154582/is-carotid-artery-ultrasound-still-useful-method-for-evaluation-of-atherosclerosis
#7
REVIEW
Gee-Hee Kim, Ho-Joong Youn
Carotid ultrasound is an imaging modality that allows non-invasive assessment of vascular anatomy and function. Carotid intima-media thickness (IMT) has been shown to predict cardiovascular (CV) risk in multiple large studies. However, in 2013, American College of Cardiology/American Heart Association guidelines designated that the carotid IMT as class III evidence level was not recommended for use in clinical practice as a routine measurement of risk assessment for a first atherosclerotic CV event. Following the announcement of this guideline, combined common carotid IMT and plaque, including plaque tissue characterization and plaque burden, using 3D ultrasound was reported to be better than either measurement alone in a variety of studies...
January 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28154104/heart-brain-axis-effects-of-neurologic-injury-on-cardiovascular-function
#8
Pouya Tahsili-Fahadan, Romergryko G Geocadin
A complex interaction exists between the nervous and cardiovascular systems. A large network of cortical and subcortical brain regions control cardiovascular function via the sympathetic and parasympathetic outflow. A dysfunction in one system may lead to changes in the function of the other. The effects of cardiovascular disease on the nervous system have been widely studied; however, our understanding of the effects of neurological disorders on the cardiovascular system has only expanded in the past 2 decades...
February 3, 2017: Circulation Research
https://www.readbyqxmd.com/read/28154006/sudden-cardiac-death-in-patients-with-ischemic-heart-failure-undergoing-coronary-artery-bypass-grafting-results-from-the-surgical-treatment-for-ischemic-heart-failure-stich-randomized-clinical-trial
#9
Meena P Rao, Sana M Al-Khatib, Sean Pokorney, Lilin She, Alexander Romanov, Jose C Nicolau, Kerry L Lee, Peter E Carson, Craig H Selzman, Janina Stepinska, John G F Cleland, Wiwun Tungsubutra, Patrice M Desvigne-Nickens, Carla Sueta, Matthias Siepe, Irene M Lang, Arthur M Feldman, Michael Yii, Jean L Rouleau, Eric J Velazquez
BACKGROUND: -The risk of sudden cardiac death (SCD) in patients with heart failure following CABG has not been examined in a contemporary clinical trial of surgical revascularization. This analysis describes the incidence, timing and clinical predictors of SCD after CABG. METHODS: -Patients enrolled in the Surgical Treatment of Ischemic Heart Failure (STICH) trial who underwent CABG with or without surgical ventricular reconstruction (SVR) were included. We excluded patients with prior ICD and those randomized only to medical therapy...
February 2, 2017: Circulation
https://www.readbyqxmd.com/read/28151908/implantation-of-vvi-pacemaker-in-a-patient-with-dextrocardia-persistent-left-superior-vena-cava-and-sick-sinus-syndrome-a-case-report
#10
Gongliang Guo, Lili Yang, Jinyi Wu, Liqun Sun
BACKGROUND: Dextrocardia, or right-lying heart, is an uncommon congenital heart disease in which the apex of the heart is located on the right side of chest. Persistent left superior vena cava (PLSVA) is a rare venous anomaly that is often associated with the abnormalities of cardiac transduction system. A case with combination of dextrocardia, persistent left superior vena cava, and sick sinus syndrome has not been reported. METHODS: We used different techniques including cardiac color Doppler echocardiography, 24-hour Holter monitoring, and abdominal ultrasound to make a diagnosis and treated the patient by implanting a VVI pacemaker...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28145877/transcatheter-mitral-paravalvular-leak-closure-facilitated-by-preprocedural-cardiac-ct-for-simulation-of-fluoroscopic-anatomy-and-paravalvular-defect-localization
#11
Kasper Korsholm, Ulrik Mortensen, Jesper Møller Jensen, Nicolo Piazza, Pascal Thériault-Lauzier, Jens Erik Nielsen-Kudsk
Paravalvular leakage (PVL) occurs in 6%-15% of cases after surgical heart valve replacement. A percutaneous approach is increasingly used to close PVLs as an alternative to repeat surgery. Computed tomography (CT) can be used for simulation of fluoroscopic cardiac anatomy. This technique allows preprocedural definition of optimal C-arm angulations and PVL localization in reference to fluoroscopic views. It is very helpful for guidewire crossing of the PVL and positioning of the closure device. We report a case with the first use of dedicated software for fluoroscopic simulation (FluoroCT) in transcatheter mitral PVL closure...
February 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28144400/cutting-edge-clinical-applications-in-cardiovascular-magnetic-resonance
#12
EDITORIAL
Carlo N De Cecco, Giuseppe Muscogiuri, Akos Varga-Szemes, U Joseph Schoepf
Today, the use of cardiovascular magnetic resonance (CMR) is widespread in clinical practice. The increased need to evaluate of subtle myocardial changes, coronary artery anatomy, and hemodynamic assessment has prompted the development of novel CMR techniques including T1 and T2 mapping, non-contrast angiography and four dimensional (4D) flow. T1 mapping is suitable for diagnosing pathologies affecting extracellular volume such as myocarditis, diffuse myocardial fibrosis and amyloidosis, and is a promising diagnostic tool for patients with iron overload and Fabry disease...
January 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28139455/vascular-anatomy-in-children-with-univentricular-hearts-regarding-transcatheter-bidirectional-glenn-anastomosis
#13
Aleksander Sizarov, Francesca Raimondi, Damien Bonnet, Younes Boudjemline
BACKGROUND: Transcatheter stent-secured Glenn anastomosis, aiming to reduce the invasiveness of palliation in patients with univentricular heart defects, has been reported in large experimental animals. The advent of biodegradable stents and tissue-engineered vascular grafts will make this procedure a reality in human patients. However, the relationship between the superior vena cava (SVC) and the right pulmonary artery (RPA) is different in humans. AIM: To characterise vascular anatomy in children with univentricular hearts, regarding technical aspects and device design for this procedure...
January 27, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28134395/ultrasound-examination-of-the-fetal-heart
#14
Katherine C Bishop, Jeffrey A Kuller, Brita K Boyd, Eleanor H Rhee, Stephen Miller, Piers Barker
Congenital heart disease (CHD) occurs in 4-13 per 1000 births in the United States. While many risk factors for CHD have been identified, more than 90% of cases occur in low-risk patients. Guidelines for fetal cardiac screening during the second trimester anatomy ultrasound have been developed by the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) in order to improve antenatal detection rates and to standardize the fetal cardiac screening examination. Patients found to be at increased risk of CHD because of risk factors or an abnormal screening examination should be referred for second trimester fetal echocardiography...
January 2017: Obstetrical & Gynecological Survey
https://www.readbyqxmd.com/read/28131788/protective-properties-of-the-arterial-system-against-peripherally-generated-waves
#15
Marcin Majka, Giacomo Gadda, Angelo Taibi, Mirosław Gałązka, Piotr Zieliński
An anatomically detailed model consisting of a network of electric transmission lines is developed to simulate propagation of the pulse waves in humans. The simulations show that the real arterial tree geometry, together with the elastic and rheological parameters of particular segments, ensure an efficient protection of vital organs against pulse waves generated at peripheral locations. Because locomotive movements are the most obvious source of such disturbances, additional cyclic perturbations are applied to the model femoral arteries...
January 25, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28127497/descent-of-mesonephric-duct-to-the-final-position-of-the-vas-deferens-in-human-embryo-and-fetus
#16
Zhe Wu Jin, Hiroshi Abe, Nobuyuki Hinata, Xiang Wu Li, Gen Murakami, José Francisco Rodríguez-Vázquez
Because the ureter arises from the mesonephric or Wolffian duct (WD), the WD opening should migrate inferiorly along the urogenital sinus or future urethra. However, this process of descent has not been evaluated morphometrically in previous studies and we know little about intermediate morphologies for the descent. In the present work, serial sagittal sections of 15 specimens at gestational age 6-12 weeks and serial horizontal sections of 20 specimens at 6-10 weeks were analyzed. Monitoring of horizontal sections showed that, until 9 weeks, a heart-, lozenge- or oval-shape of the initial urogenital sinus remained in the bladder and urethra...
December 2016: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28124282/the-role-of-3d-printing-in-preoperative-planning-for-heart-transplantation-in-complex-congenital-heart-disease
#17
M L Smith, J McGuinness, M K O'Reilly, L Nolke, J G Murray, J F X Jones
BACKGROUND: The presence of a structural cardiac defect in the setting of dextrocardia is extremely rare. Graspable models allow enhanced appreciation of aberrant structures and vascular relations, particularly in rare and complex cases. This is the first case report of the use of a replica of a patients' anatomy to plan the surgical strategy in the setting of dextrocardia. AIMS: We intend to demonstrate the benefit of three-dimensional printing to enhance preoperative planning in complex congenital heart disease undergoing heart transplantation...
January 25, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28123116/the-first-organ-based-free-ontology-for-arthropods-ontology-of-arthropod-circulatory-systems-oarcs-and-its-integration-into-a-novel-formalization-scheme-for-morphological-descriptions
#18
Christian S Wirkner, Torben Göpel, Jens Runge, Jonas Keiler, Bastian-Jesper Klussmann-Fricke, Katarina Huckstorf, Stephan Scholz, Istvan Mikó, Matt Yoder, Stefan Richter
Morphology, the oldest discipline in the biosciences, is currently experiencing a renaissance in the field of comparative phenomics. However, morphological/phenotypic research still suffers on various levels from a lack of standards. This shortcoming, first highlighted as the "linguistic problem of morphology", concerns the usage of terminology but also the need for formalization of morphological descriptions themselves, something of paramount importance not only to the field of morphology but also when it comes to the use of phenotypic data in systematics and evolutionary biology...
January 25, 2017: Systematic Biology
https://www.readbyqxmd.com/read/28118786/mathematical-analysis-and-physical-profile-of-blalock-taussig-shunt-and-sano-modification-procedure-in-hypoplastic-left-heart-syndrome
#19
Efrain Riveros Perez, Ricardo Riveros
The first stage of surgical treatment for hypoplastic left heart syndrome (HLHS) includes the creation of artificial systemic-to-pulmonary connections to provide pulmonary blood flow. The modified Blalock-Taussig (mBT) shunt has been the technique of choice for this procedure; however, a right ventricle-pulmonary artery (RV-PA) shunt has been introduced into clinical practice with encouraging but still conflicting outcomes when compared with the mBT shunt. The aim of this study is to explore mathematical modeling as a tool for describing physical profiles that could assist the surgical team in predicting complications related to stenosis and malfunction of grafts in an attempt to find correlations with clinical outcomes from clinical studies that compared both surgical techniques and to assist the anesthesiologist in making decisions to manage patients with this complex cardiac anatomy...
January 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28113394/4d-ice-a-2d-array-transducer-with-integrated-asic-in-a-10-fr-catheter-for-real-time-3d-intracardiac-echocardiography
#20
Douglas Wildes, Warren Lee, Bruno Haider, Scott Cogan, Krishnakumar Sundaresan, David Mills, Christopher Yetter, Patrick Hart, Christopher Haun, Mikael Concepcion, Johan Kirkhorn, Marc Bitoun
We developed a 2.5 x 6.6 mm 2D array transducer with integrated transmit/receive ASIC for 4D ICE (real-time 3D IntraCardiac Echocardiography) applications. The ASIC and transducer design were optimized so that the high voltage transmit, low-voltage TGC (time-gain control) and preamp, subaperture beamformer, and digital control circuits for each transducer element all fit within the 0.019 mm2 area of the element. The transducer assembly was deployed in a 10 Fr (3.3 mm diameter) catheter, integrated with a GE Vivid1 E9 ultrasound imaging system, and evaluated in three pre-clinical studies...
October 12, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
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