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Coronary Sinus

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https://www.readbyqxmd.com/read/28937494/high-pitch-coronary-computed-tomographic-angiography-using-the-third-generation-dual-source-computed-tomography-initial-experience-in-patients-with-high-heart-rate
#1
Ruiqi Feng, Jingsong Mao, Xiaofei Liu, Yu Zhao, Jiajie Tong, Liang Zhang
OBJECTIVE: This study aimed to evaluate the feasibility, image quality, and radiation dose of prospectively high-pitch coronary computed tomographic (CT) angiography in patients with high heart rates (HRs) using the third-generation dual-source CT. METHODS: One hundred consecutive patients with sinus rhythm and HR between 70 and 100 beats per minute were enrolled into this study. All patients were divided into 2 groups. Patients in group A (n = 46) were examined with prospectively high-pitch scan mode in which image acquisition was triggered at 30% of the R-R interval...
September 20, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28933239/diaphragmatic-hernia-associated-with-absent-ductus-venosus-and-anomalous-connection-of-an-obliterated-umbilical-vein-to-the-coronary-sinus
#2
Peter C Chen, Julia C Swanson, Prakash Masand, Jose R Rodriguez, Carlos M Mery
Umbilical vein anomalies are a rare congenital defect, which have been associated with absent ductus venosus, with few cases also involving a congenital diaphragmatic hernia. We describe a case of postnatal development of an anterior diaphragmatic hernia of Morgagni in a four-year-old patient diagnosed prenatally with mesocardia, absent ductus venosus with a large umbilical vein, a large secundum atrial septal defect, and patent ductus arteriosus.
January 1, 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28931787/heparin-induces-the-mobilization-of-heart-derived-multipotent-mesoangioblasts-during-cardiac-surgery-with-cardiopulmonary-bypass-or-cardiac-catheterization
#3
Yoshihiro Hata, Masayoshi Iwasaki, Keisuke Fujitaka, Haengnam Park, Daisuke Sato, Chiharu Enoki, Naoki Minato, Keita Horitani, Miyuki Nakano, Hiroshi Kishimoto, Kensaku Wada, Masamichi Koyanagi, Yasushi Adachi, Yoshihiro Yamamoto, Andreas M Zeiher, Stefanie Dimmeler, Ichiro Shiojima
BACKGROUND: We previously identified circulating mesoangioblasts (cMABs), a subset of mesenchymal stem cells that express cardiac mesodermal markers, in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB). We also found that hepatocyte growth factor (HGF) is upregulated during cardiac surgery with CPB in humans, and induces MAB-like cell mobilization in rodents. These results strongly suggest that heparin induced MAB mobilization via HGF upregulation. Here, we tested this hypothesis in patients undergoing cardiac surgery or cardiac catheterization...
September 21, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28928990/detection-of-a-left-superior-vena-cava-during-a-pacemaker-implantation-in-cotonou
#4
A Sonou, M Hounkponou, L Codjo, P M Adjagba, C Houehanou, H Dohou, S Assani, Y Tchabi, M Houenassi
Persistent left superior vena cava (LSVC) is a rare congenital anomaly. Its prevalence in the general population is 0.1 to 0.5%. LSVC is 5 times rarer when accompanied by an absence of the right superior vena cava (RSVC). We present the case of a 54-year-old man who carries a persistent LSVC without RSVC. Clinically, this patient presented a regular bradycardia at 40 per minute associated with a heart failure syndrome. The electrocardiogram diagnosed a complete atrioventricular block and transthoracic echocardiography showed dilated left heart cavities and a left ventricular ejection fraction of 50%...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28928613/clarifying-the-anatomy-and-physiology-of-totally-anomalous-systemic-venous-connection
#5
REVIEW
Saurabh Kumar Gupta, Rajnish Juneja, Robert H Anderson, Gurpreet S Gulati, Velayoudam Devagorou
The description of totally anomalous systemic venous connection is limited to case reports. In this review, we seek to clarify anatomic, physiologic, and hemodynamic aspects of this extremely rare anomaly. We also present findings of two patients in whom connection of all the systemic veins was anomalous. In the first patient, with usual atrial arrangement, all systemic veins, including the coronary sinus, were connected anomalously to the morphologically left atrium. Limited left-to-right shunt across an atrial septal defect provided the only source of blood flow to the lungs...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28925322/unusual-intramural-coronary-artery-with-vertical-course-complicating-an-arterial-switch-operation
#6
Lok Sinha, Richard A Jonas, Pranava Sinha
Intramural coronary arteries in patients with d-transposition of the great arteries (d-TGA) usually arise from the opposite sinus of Valsalva and traverse horizontally across the posterior/facing commissure before emerging externally from the appropriate sinus of Valsalva. Failure to make appropriate technical modifications during coronary transfer can result in an important risk of posttransfer ischemia. We report a case with an unusual course of an intramural left anterior descending (LAD) coronary artery in a patient with d-TGA, with origin at the mid ascending aorta and a vertical intramural course, increasing the susceptibility to injury during an arterial switch operation (ASO)...
January 1, 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28924118/atrial-arrhythmia-ablation-in-adult-congenital-heart-disease-with-a-persistent-left-side-superior-vena-cava
#7
Shinya Yamada, Li-Wei Lo, Yenn-Jiang Lin, Atul Prabhu, Shih-Ann Chen
We herein report a case of atrial tachycardia (AT) originating from the dilated coronary sinus (CS) connected to a persistent left superior vena cava. The earliest activation site of AT was localized at the superior CS ostium, identified using a novel ultra-rapid high-density mapping system (Rhythmia™). Successful ablation was performed at the corresponding position. This report demonstrated the utility of an ultra-rapid high-density mapping system in identifying arrhythmogenic foci in adult cases of congenital heart disease...
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28924070/-a-case-of-cerebral-venous-sinus-thrombosis-secondary-to-subclinical-basedow-disease
#8
Ichiro Kawahara, Keisuke Toyoda, Makoto Hirose, Naoki Kitagawa
Cerebral venous sinus thrombosis(CVST)is a rare condition accounting for <1% of all strokes. It has been linked to a multitude of risk factors, including infections, oral contraceptive use, coronary disease, malignant disease, trauma, surgery, coagulopathy and several others. However, the association between hyperthyroidism and CVST is poorly understood. We describe here a rare case of CVST, secondary to subclinical Basedow disease. A 68-year-old woman with general fatigue, headache, speech disturbance and slow behavior was admitted to our hospital...
September 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28917557/idiopathic-ventricular-arrhythmias-originating-from-the-right-coronary-sinus-prevalence-electrocardiographic-and-electrophysiologic-characteristics-and-catheter-ablation
#9
Yunlong Wang, Zhuo Liang, Shaoqin Wu, Zhihong Han, Xuejun Ren
BACKGROUND: Ventricular arrhythmias (VAs) of right coronary cusp (RCC) are not fully characterized. OBJECTIVES: To investigate the electrocardiographic and electrophysiologic characteristics, mapping and ablation of RCC-VAs. METHODS: Among 256 consecutive patients undergoing electrophysiologic evaluation and ablation of VAs of ventricular outflow tract origin, data were compared among 27 RCC-VAs, 50 VAs of the septal aspect of right ventricular outflow tract (RVOT, including from pulmonary artery) and 9 VAs of left coronary cusp (LCC)...
September 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28905405/bioassay-determination-and-separation-of-enantiomers-of-atenolol-by-direct-and-indirect-approaches-using-liquid-chromatography-a-review
#10
REVIEW
Sonika Batra, Ravi Bhushan
Atenolol, a β-adrenergic receptor antagonist, is a chiral compound used for the treatment of cardiovascular diseases and to treat hypertension, coronary heart disease, arrhythmias, sinus tachycardia and myocardial infarction, where it acts preferentially upon the β-adrenergic receptors in the heart. It is marketed as a racemate, but only (S)-enantiomer of (RS)-atenolol is responsible for the β-adrenoceptor blocking activity. Different chromatographic methods have been applied for separation and determination of enantiomers...
September 14, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28905113/influence-of-increased-heart-rate-and-aortic-pressure-on-resting-indices-of-functional-coronary-stenosis-severity
#11
Lorena Casadonte, Bart-Jan Verhoeff, Jan J Piek, Ed VanBavel, Jos A E Spaan, Maria Siebes
Baseline assessment of functional stenosis severity has been proposed as a practical alternative to hyperemic indices. However, intact autoregulation mechanisms may affect intracoronary hemodynamics. The aim of this study was to investigate the effect of changes in aortic pressure (Pa) and heart rate (HR) on baseline coronary hemodynamics and functional stenosis assessment. In 15 patients (55 ± 3% diameter stenosis) Pa, intracoronary pressure (Pd) and flow velocity were obtained at control, and during atrial pacing at 120 bpm, increased Pa (+30 mmHg) with intravenous phenylephrine (PE), and elevated Pa while pacing at sinus heart rate (PE + sHR)...
September 13, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28902643/prevalence-and-characteristics-of-coronary-artery-anomalies-in-children-with-congenital-heart-disease-diagnosed-with-coronary-angiography
#12
Münevver Tuğba Temel, Mehmet Enes Coşkun, Osman Başpınar, Abdullah Tuncay Demiryürek
OBJECTIVE: Aim of the present study was to determine the prevalence of coronary artery anomalies in children with congenital heart disease. METHODS: Data of 1138 consecutive patients who were referred for cardiac catheterization and angiography for assessment of coronary anomaly between January 2005 and December 2009 were retrospectively analyzed. Total of 515 patients whose coronary arteries could be examined through left ventricle and aortic root injection were included in the study...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28901573/validation-of-a-novel-cartoseg%C3%A2-segmentation-module-software-for-contrast-enhanced-computed-tomography-guided-radiofrequency-ablation-in-patients-with-atrial-fibrillation
#13
EDITORIAL
Hasan Imanli, Shaun Bhatty, Jean Jeudy, Yousra Ghzally, Kiddy Ume, Rama Vunnam, Refael Itah, Mati Amit, John Duell, Vincent See, Stephen Shorofsky, Timm M Dickfeld
INTRODUCTION: Visualization of left atrial (LA) anatomy using image integration modules has been associated with decreased radiation exposure and improved procedural outcome when used for guidance of pulmonary vein isolation (PVI) in atrial fibrillation (AF) ablation. We evaluated the CARTOSEG™ CT Segmentation Module (Biosense Webster, Inc.) that offers a new CT-specific semi-automatic reconstruction of the atrial endocardium. METHODS: The CARTOSEG™ CT Segmentation Module software was assessed prospectively in 80 patients undergoing AF ablation...
September 13, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28901235/low-dose-computed-tomographic-imaging-of-partial-anomalous-pulmonary-venous-connection-in-children
#14
Aysel Türkvatan, Hasan Tahsin Tola, Neşe Kutlutürk, Alper Güzeltaş, Yakup Ergül
BACKGROUND: In this study, we aimed to determine lobar distribution, drainage sites, and associated cardiovascular anomalies of partial anomalous pulmonary venous connection in pediatric patients using low-dose multidetector computed tomographic angiography. METHODS: Sixty-one cases (27 female, mean age: 4.7 years) with partial anomalous pulmonary venous connection diagnosed by multidetector computed tomographic angiography were included in this study. In all patients, multidetector computed tomographic angiography examinations were performed using dual-source 256-slice scanner without sedation...
September 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28894011/palpitations-in-a-72-year-old-woman
#15
Claire A Martin, Parag R Gajendragadkar, Sharad Agarwal
CLINICAL INTRODUCTION: A 72-year-old woman presented with an 8-year history of palpitations occurring every few weeks. They were sudden in onset, were associated with dizziness and could last for up to 2 hours. She was prescribed bisoprolol which reduced the frequency of events but did not abolish them. Baseline ECG and echocardiography were normal. She was referred for electrophysiological study. Despite initial difficulties, diagnostic catheters were placed in the right ventricular (RV) apex and in the coronary sinus (CS) via the right internal jugular vein and superior vena cava (SVC) (figure 1A)...
October 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28890073/alternative-progenitor-cells-compensate-to-rebuild-the-coronary-vasculature-in-elabela-and-apj-deficient-hearts
#16
Bikram Sharma, Lena Ho, Gretchen Hazel Ford, Heidi I Chen, Andrew B Goldstone, Y Joseph Woo, Thomas Quertermous, Bruno Reversade, Kristy Red-Horse
Organogenesis during embryonic development occurs through the differentiation of progenitor cells. This process is extraordinarily accurate, but the mechanisms ensuring high fidelity are poorly understood. Coronary vessels of the mouse heart derive from at least two progenitor pools, the sinus venosus and endocardium. We find that the ELABELA (ELA)-APJ signaling axis is only required for sinus venosus-derived progenitors. Because they do not depend on ELA-APJ, endocardial progenitors are able to expand and compensate for faulty sinus venosus development in Apj mutants, leading to normal adult heart function...
August 31, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28889087/self-expanding-transcatheter-aortic-valve-implantation-for-degenerated-small-mitroflow-bioprosthesis-early-and-midterm-outcomes
#17
Marianna Adamo, Claudia Fiorina, Salvatore Curello, Giuliano Chizzola, Elena Pezzotti, Emanuele Gavazzi, Luca Branca, Ermanna Chiari, Filippo Quinzani, Michele Rinaldi, Marco Metra, Federica Ettori
AIMS: The aim of this study was to report clinical outcomes of self-expanding transcatheter aortic valve implantation (TAVI) for failed small Mitroflow (MF) bioprostheses. METHODS AND RESULTS: Between January 2013 and July 2016, 15 symptomatic patients (NYHA Class ≥III) with degenerated small MF (≤23 mm) underwent CoreValve (CV) or Evolut R (EvR) implantation due to high/prohibitive risk for surgical redo. The MF size was 19 or 21 mm (off-label in Europe) in eight patients...
September 10, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28888481/spatial-distribution-of-conduction-disorders-during-sinus-rhythm
#18
Eva A H Lanters, Ameeta Yaksh, Christophe P Teuwen, Lisette J M E van der Does, Charles Kik, Paul Knops, Denise M S van Marion, Bianca J J M Brundel, Ad J J C Bogers, Maurits A Allessie, Natasja M S de Groot
BACKGROUND: Length of lines of conduction block (CB) during sinus rhythm (SR) at Bachmann's bundle (BB) is associated with atrial fibrillation (AF). However, it is unknown whether extensiveness of CB at BB represents CB elsewhere in the atria. We aim to investigate during SR 1) the spatial distribution and extensiveness of CB 2) whether there is a predilection site for CB and 3) the association between CB and incidence of post-operative AF. METHODS: During SR, epicardial mapping of the right atrium (RA), BB and left atrium was performed in 209 patients with coronary artery disease...
September 2, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28882941/anomalous-left-anterior-descending-artery-arising-from-the-pulmonary-trunk-a-rare-cause-of-angina
#19
Abdalla Ibrahim, Stephen P Power, Peter Kelly
A 60-year-old man with a medical history of hypertension and dyslipidaemia presented to our rapid access chest pain clinic with a 2-month history of chest pain on exertion. An exercise stress test was arranged, which showed electrical evidence of inducible ischaemia. Subsequently, a coronary angiogram revealed an anomalous left anterior descending artery arising from the main pulmonary artery that received grade 3 collaterals from a large right coronary artery arising from the aorta. The circumflex arises from the right coronary sinus with a retroaortic course and provided collaterals to the anomalous left anterior descending artery...
September 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28881765/mitral-isthmus-ablation-using-a-circular-mapping-catheter-positioned-in-the-left-atrial-appendage-as-a-reference-for-conduction-block
#20
Takahiko Nishiyama, Takehiro Kimura, Taishi Fujisawa, Kazuaki Nakajima, Akira Kunitomi, Shin Kashimura, Yoshinori Katsumata, Nobuhiro Nishiyama, Yoshiyasu Aizawa, Keiichi Fukuda, Seiji Takatsuki
BACKGROUND: For perimitral atrial flutter (PMFL) developing after catheter ablation of atrial fibrillation (AF), to create a complete conduction block at the mitral isthmus (MI) is mandatory to terminate it, however, it is still challenging. METHODS: This study consisted of 80 patients (74 male, 61 ± 8.1 years) undergoing MI ablation. After a circular mapping catheter was positioned at the neck of the left atrial appendage (LAA), the MI ablation was performed on the MI line just below the LAA neck targeting the earliest activation recording site of the LAA catheter during pacing from the coronary sinus (CS)...
August 8, 2017: Oncotarget
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