keyword
MENU ▼
Read by QxMD icon Read
search

Left atrium

keyword
https://www.readbyqxmd.com/read/29245153/catheter-ablation-of-focal-atrial-tachycardia-using-remote-magnetic-navigation
#1
Xiao-Yu Liu, Peter Karl Jacobsen, Steen Pehrson, Xu Chen
OBJECTIVES: The outcomes of catheter ablation in focal atrial tachycardia (AT) using remote magnetic navigation (RMN) are still controversial. The objectives of this study were to assess the acute and long-term outcomes of catheter ablation in focal AT using RMN. BACKGROUND: A total of 53 patients with focal AT who underwent catheter ablation using RMN were included. Thirty-six patients had structural heart disease, including previous atrial fibrillation ablation and heart surgery (abnormal group), and the remaining 17 patients had no structural heart disease (normal group)...
December 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29244156/percutaneous-increase-of-mitral-leaflet-coaptation-length-after-mitral-valve-repair-results-from-a-preclinical-study
#2
Piergiorgio Tozzi, Giuseppe Siniscalchi, Enrico Ferrari, Matthias Kirsch, Daniel Hayoz
OBJECTIVES: The failure of mitral repairs can be the result of inadequate leaflet coaptation length (CL< 8 mm at the A2-P2 level). A new annuloplasty ring conceived by the authors enables post-surgical CL increase using percutaneous balloon catheter technology. We conducted preclinical studies to assess the in vivo feasibility of the procedure and the safety of the postimplant deformable mitral ring. METHODS: The new annuloplasty ring allows the percutaneous and progressive displacement of each of the 3 anatomical regions of the posterior mitral annulus towards the anterior...
December 13, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29243322/transient-myocardial-thickening-in-cats-associated-with-heart-failure
#3
J Novo Matos, N Pereira, T Glaus, L Wilkie, K Borgeat, J Loureiro, J Silva, V Law, A Kranjc, D J Connolly, V Luis Fuentes
BACKGROUND: Cats with hypertrophic cardiomyopathy (HCM) and congestive heart failure (CHF) can have resolution of both left ventricular hypertrophy and CHF. OBJECTIVES: To describe the clinical characteristics of cats with transient myocardial thickening (TMT) and CHF compared with a control population of cats without resolution of HCM. ANIMALS: A total of 21 cats with TMT, 21 cats with HCM. METHODS: Retrospective study...
December 15, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29240234/prospective-study-feasibility-screening-of-antenatal-total-abnormal-pulmonary-venous-return
#4
Christine Levêque, Louise Paret, Tiffany Cochet, Félicia Joinau-Zoulovits, E Chantalat, F Vidal, Christophe Vayssière, Nadine David
INTRODUCTION: Total Abnormal Pulmonary Venous Return (TAPVR) is a heart defect often missed prenatally, yet at birth it is a surgical emergency. Antenatal detection could be improved by sonographic visualization of the anastomosis of two pulmonary veins in a sinus into the left atrium. The objective of this study is to evaluate the feasibility of this screening method. METHOD: Prospective observational study. Five operators selected one representative image taken during morphological ultrasound screening...
December 14, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29238893/postprandial-cardiogenic-syncope-caused-by-gastric-polyp-induced-pyloric-obstruction-in-an-elderly-woman-with-a-giant-hiatal-hernia-a-case-report
#5
Hideyuki Saito, Tatsuya Miyazaki, Makoto Sohda, Makoto Sakai, Hiroaki Honjyo, Yuuji Kumakura, Tomonori Yoshida, Takehiko Yokobori, Koji Kurosawa, Hiroyuki Kuwano
BACKGROUND: Hiatal hernias are common. In some reports, hiatal hernias have been implicated in causing dyspnea, syncope, and heart failure. CASE PRESENTATION: An 82-year-old woman with a hiatal hernia was admitted to our hospital because she had experienced postprandial syncope during the last few years. Esophagogastroduodenoscopy revealed a large hiatal hernia and a pedunculated polyp of the stomach antrum that fit into the pylorus. An upper gastrointestinal contrast study showed that the entire stomach had relocated to the thoracic cavity and that the body of the stomach was located above the fundus, resulting in a so-called upside-down stomach...
December 13, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/29238626/c-kit-positive-cardiac-outgrowth-cells-demonstrate-better-ability-for-cardiac-recovery-against-ischemic-myopathy
#6
Chuan Li, Satoshi Matsushita, Zhengqing Li, Jianjun Guan, Atsushi Amano
Objective: Resident cardiac stem cells are expected to be a therapeutic option for patients who suffer from severe heart failure. However, uncertainty remains over whether sorting cells for c-kit, a stem cell marker, improves therapeutic outcomes. Materials and methods: Cardiac outgrowth cells cultured from explants of rat heart atrium were sorted according to their positivity (+) or negativity (-) for c-kit. These cells were exposed to hypoxia for 3 d, and subsequently harvested for mRNA expression measurement...
October 2017: Journal of Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29237664/giant-retrocardiac-foregut-duplication-cyst-presenting-with-left-atrial-compression-and-palpitations
#7
Abdus Salam, Mujtaba Mubashir, Hadika Mubashir, Saulat Hasnain Fatimi
A 35-year-old man presented with a 3-month history of palpitations and shortness of breath. An ECG showed premature atrial contractions and episodes of supraventricular tachycardia. A subsequent echocardiogram showed a retrocardiac cystic mass that was compressing the left atrium. A CT scan confirmed these findings by showing a large left-sided posterior mediastinal cyst compressing the left atrium and pulmonary veins. The cyst was successfully excised from the retrocardiac position via left thoracotomy after which there was complete resolution of the palpitations...
December 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29233092/heart-rate-variability-after-radiofrequency-ablation-of-epicardial-ganglionated-plexuses-on-the-ovine-left-atrium
#8
Vilius Kviesulaitis, Aras Puodziukynas, Dainius Haroldas Pauza, Vytautas Zabiela, Tomas Kazakevicius, Raimundas Vaitkevicius, Evaldas Diržinauskas, Vytenis Semaška, Antanas Strazdas, Ruta Unikaite, Kristina Rysevaite, Neringa Pauziene, Remigijus Zaliunas
BACKGROUND: Ganglionated plexuses (GP) are terminal parts of cardiac autonomous nervous system (ANS). Radiofrequency ablation (RFA) for atrial fibrillation (AF) possibly affects GP. Changes in heart rate variability (HRV) after RFA can reflect ANS modulation. METHODS: Epicardial RFA of GP on the left atrium (LA) was performed under the general anesthesia in 15 mature Romanov sheep. HRV was used to assess the alterations in autonomic regulation of the heart. A 24 - hour ECG monitoring was performed before the ablation, 2 days after it and at each of the 12 following months...
December 12, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29232303/totally-endoscopic-cardiac-surgery-for-atrial-septal-defect-repair-on-beating-heart-without-robotic-assistance-in-25-patients
#9
Quang-Huy Dang, Ngoc-Thanh Le, Cong-Huu Nguyen, Dac-Dai Tran, Do-Hung Nguyen, Trung-Hieu Nguyen, Thi-Hai-Linh Ngo
OBJECTIVE: The aim of the study was to investigate the effectivity and safety of totally endoscopic cardiac surgery without robotic assistance for atrial septal defect (ASD) closure on beating hearts. METHODS: Twenty-five patients (adults/children: 15/10) underwent ASD closure using nonrobotically assisted totally endoscopic approach on beating heart. Three 5-mm trocars and one 12-mm trocar were used, only the superior vena cava is snared, filling the pleural and pericardial cavities with CO2, and the heart was beating during the surgery...
December 7, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29232294/the-need-for-consistent-predictors-of-success-for-surgical-ablation-of-atrial-fibrillation-a-call-to-action
#10
Niv Ad, Sari Diana Holmes, Jay Patel, Hyung Gon Je, Deborah J Shuman
OBJECTIVE: As with any medical therapy, identification of consistent and reliable outcome predictors is essential to understanding the efficacy of surgical ablation for atrial fibrillation. We originally intended to conduct a meta-analysis on atrial fibrillation surgical ablation to identify clinical factors that are most often associated with success. However, these studies are greatly heterogeneous. We conducted a systematic review to identify trends in outcome predictors and to provide recommendations for more uniform data analysis and reporting...
December 7, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29229263/the-hemodynamic-effects-of-different-pacing-modalities-after-cardiopulmonary-bypass-in-patients-with-reduced-left-ventricular-function
#11
R C W Gielgens, I H F Herold, A H M van Straten, B M van Gelder, F A Bracke, H H M Korsten, M A Soliman Hamad, R A Bouwman
OBJECTIVES: Patients with decreased left ventricular function undergoing cardiac surgery have a greater chance of difficult weaning from cardiopulmonary bypass and a poorer clinical outcome. Directly after weaning, interventricular dyssynchrony, paradoxical septal motion, and even temporary bundle-branch block might be observed. In this study, the authors measured arterial dP/dtmax, mean arterial pressure (MAP), and cardiac index using transpulmonary thermodilution, pulse contour analysis, and femoral artery catheter and compared the effects between right ventricular (A-RV) and biventricular (A-BiV) pacing on these parameters...
July 8, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29228231/novel-echocardiographic-method-to-assess-left-ventricular-chamber-stiffness-and-elevated-end-diastolic-pressure-based-on-time-velocity-integral-measurements-of-pulmonary-venous-and-transmitral-flows
#12
Kazunori Okada, Sanae Kaga, Rika Abiko, Michito Murayama, Takuma Hioka, Masahiro Nakabachi, Shinobu Yokoyama, Hisao Nishino, Ayako Ichikawa, Ayumu Abe, Mutsumi Nishida, Naoya Asakawa, Shingo Tsujinaga, Taichi Hayashi, Hiroyuki Iwano, Satoshi Yamada, Nobuo Masauzi, Taisei Mikami
Aims: The detection of increased left ventricular (LV) chamber stiffness may play an important role in assessing cardiac patients with potential but not overt heart failure. A non-invasive method to estimate it is not established. We investigated whether the echocardiographic backward/forward flow volume ratio from the left atrium (LA) during atrial contraction reflects the LV chamber stiffness. Methods and results: We studied 62 patients who underwent cardiac catheterization and measured their left ventricular end-diastolic pressure (LVEDP) and pressure increase during atrial contraction (ΔPa) from the LV pressure waveform...
December 8, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29227821/scan-rescan-reproducibility-of-ventricular-and-atrial-mri-feature-tracking-strain
#13
Jérôme Lamy, Gilles Soulat, Morgane Evin, Adrian Huber, Alain de Cesare, Alain Giron, Benoit Diebold, Alban Redheuil, Elie Mousseaux, Nadjia Kachenoura
BACKGROUND: A feature tracking (FT) was designed to simultaneously extract myocardial strains in main cardiac chambers from cine MRI images. Its inter-observer and scan-rescan reproducibility was assessed and sample sizes required to detect predefined longitudinal changes in strain values were provided. METHOD: FT was applied on left (LV) and right (RV) ventricles as well as left atrium (LA) of 21 individuals (66 ± 10 years) who underwent 2 MRIs 2 weeks apart...
November 24, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29227008/ice-or-fire-comparison-of-second-generation-cryoballoon-ablation-and-radiofrequency-ablation-in-patients-with-symptomatic-persistent-atrial-fibrillation-and-an-enlarged-left-atrium
#14
Ersan Akkaya, Alexander Berkowitsch, Sergej Zaltsberg, Harald Greiss, Christian W Hamm, Johannes Sperzel, Thomas Neumann, Malte Kuniss
INTRODUCTION: We aimed to compare arrhythmia recurrence rates after second-generation cryoballoon (CB-Adv) ablation and radiofrequency (RF) ablation in patients with symptomatic persistent atrial fibrillation (AF) and left atrial (LA) enlargement. METHODS AND RESULTS: Persistent AF patients with LA enlargement were compared using a propensity-score-matching algorithm, and 111 patients treated with CB-Adv ablation and 111 patients treated with RF ablation were selected...
December 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29225261/a-case-of-isolated-left-atrial-infective-mural-endocarditis
#15
Saki Hosokawa, Hideki Okayama, Go Hiasa, Go Kawamura, Tatsuya Shigematsu, Tatsunori Takahashi, Yoshitaka Kawada, Tadakatsu Yamada, Hiroshi Matsuoka, Yukio Kazatani
A 52-year-old man presented with a fever and malaise. Transthoracic echocardiogram was performed because of a holosystolic murmur, which showed mitral valve prolapse and a regurgitation jet toward the posterior wall of the left atrium. There was no apparent vegetation at any valves. Blood cultures were positive for Streptococcus mitis/oralis. Transesophageal echocardiogram revealed vegetation only at the posterior wall of the left atrium exposed to the mitral regurgitant jet. We diagnosed this condition as infective mural endocarditis...
December 8, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29222289/what-is-the-role-of-screening-for-pulmonary-hypertension-in-adults-and-children-with-sickle-cell-disease
#16
REVIEW
Shaina M Willen, Mark T Gladwin
Patient case: An 18-year-old male patient with homozygous hemoglobin SS disease was evaluated for progressive dyspnea and elevated tricuspid regurgitant jet velocity (TRV) on echocardiography. The patient's case is described in detail in Lancet1 He had been treated with regular transfusions since childhood for stroke, had rare episodes of vaso-occlusive pain episodes, and did not take narcotic pain medications. He presented with progressive severe dyspnea on exertion and lower extremity edema. His laboratory tests were notable for a total hemoglobin level of 11...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29221265/outcomes-of-surgical-treatment-in-115-patients-with-primary-cardiac-tumours-a-15-year-experience-at-a-single-institution
#17
Ran Mo, Lin Mi, Qing Zhou, Dongjin Wang
Background: Primary cardiac tumours are rare, and few studies have examined large samples. The aim of this study was to review a single institution's 15 years of experience with primary cardiac tumours. Methods: We conducted a retrospective analysis of 119 consecutive patients admitted to the Nanjing Drum Tower Hospital from April 2002 to January 2017. Five patients declined surgery due to illness or for financial reasons, and one patient underwent a second operation due to tumour recurrence 10 years after the first operation...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29217489/fixed-volume-particle-trace-emission-for-the-analysis-of-left-atrial-blood-flow-using-4d-flow-mri
#18
Stephen Gaeta, Petter Dyverfeldt, Jonatan Eriksson, Carl-Johan Carlhäll, Tino Ebbers, Ann F Bolger
4D Flow MRI has been used to quantify normal and deranged left ventricular blood flow characteristics on the basis of functionally distinct flow components. However, the application of this technique to the atria is challenging due to the presence of continuous inflow. This continuous inflow necessitates plane-based emission of particle traces from the inlet veins, leading to particles that represents different amounts of blood, and related quantification errors. The purpose of this study was to develop a novel fixed-volume approach for particle tracing and employ this method to develop quantitative analysis of 4D blood flow characteristics in the left atrium...
December 4, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29216983/atrial-infarction-and-ischemic-mitral-regurgitation-contribute-to-post-mi-remodeling-of-the-left-atrium
#19
Jaume Aguero, Carlos Galan-Arriola, Rodrigo Fernandez-Jimenez, Javier Sanchez-Gonzalez, Nina Ajmone, Victoria Delgado, Jorge Solis, Gonzalo J Lopez, Antonio de Molina-Iracheta, Roger J Hajjar, Jeroen J Bax, Valentin Fuster, Borja Ibáñez
BACKGROUND: Left atrial (LA) remodeling after an acute myocardial infarction (MI) is poorly characterized regarding its determinants or its effect on ischemic mitral regurgitation (MR) development. OBJECTIVES: The purpose of this study was: 1) to compare LA structural remodeling in experimental MI swine models recapitulating the effects of left ventricular (LV) dysfunction, ischemic MR, and left atrial infarction (LAI); and 2) to analyze how LA remodeling influences ischemic MR development...
December 12, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29216531/living-donor-liver-transplantation-for-adult-budd-chiari-syndrome-resection-without-replacement-of-retrohepatic-ivc-a-case-report
#20
Tarek Abdelazeem Sabra, Hideaki Okajima, Tetsuya Tajima, Ken Fukumitsu, Koichiro Hata, Kentaro Yasuchika, Toshihiko Masui, Kojiro Taura, Toshimi Kaido, Shinji Uemoto
INTRODUCTION: Suprahepatic caval resection and replacement of inferior vena cava (IVC) is standard procedure in deceased donor liver transplantation for patients with Budd-Chiari syndrome (BCS). However, replacement of IVC in living donor liver transplantation (LDLT) is difficult. We report a case of BCS successfully treated by LDLT without replacement of IVC. PRESENTATION OF CASE: A 52-years-old female with a primary BCS due to IVC thrombosis. A vena cava (VC) stent placed after angioplasty without improvement of the hepatic, portal venous flow and liver functions, Transjugular intrahepatic portosystemic shunt was considered and the patient had a rapid deterioration and increased ascites...
December 1, 2017: International Journal of Surgery Case Reports
keyword
keyword
7148
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"