keyword
MENU ▼
Read by QxMD icon Read
search

Atrium

keyword
https://www.readbyqxmd.com/read/29161313/biomarkers-and-echocardiography-for-evaluating-the-improvement-of-the-ventricular-diastolic-function-after-surgical-relief-of-hydronephrosis
#1
Huei-Ming Yeh, Ting-Tse Lin, Chih-Fan Yeh, Ho-Shiang Huang, Sheng-Nan Chang, Jou-Wei Lin, Chia-Ti Tsai, Ling-Ping Lai, Yi-You Huang, Chun-Lin Chu
The pathophysiology of cardio-renal syndrome (CRS) is complex. Hydronephrosis caused by urolithiasis may cause cytokine release and lead to cardiac dysfunction. The aim of this study was to evaluate cardiac function changes observed in patients who received double J placement using feasible biomarkers and echocardiography. This was a prospective, single-center study. Eighty-seven patients who presented with acute unilateral hydronephrosis and received ureteroscope stone manipulation were enrolled. Echocardiography and cytokines were measured on the day of the operation and 24 hours after the procedure...
2017: PloS One
https://www.readbyqxmd.com/read/29160523/infective-endocarditis-due-to-bartonella-bacilliformis-associated-with-systemic-vasculitis-a-case-report
#2
Joshua Peñafiel-Sam, Samuel Alarcón-Guevara, Sergio Chang-Cabanillas, Wilkerson Perez-Medina, Fernando Mendo-Urbina, Eloy Ordaya-Espinoza
Infective endocarditis due to Bartonella bacilliformis is rare. A 64-year-old woman, without previous heart disease, presented with 6 weeks of fever, myalgias, and arthralgias. A systolic murmur was heard on the tricuspid area upon examination, and an echocardiogram showed endocardial lesions in the right atrium. Bartonella bacilliformis was isolated in blood cultures, defining the diagnosis of infective endocarditis using Duke's criteria. Subsequently, the patient developed clinical and laboratory features compatible with antineutrophil cytoplasmic antibody-associated vasculitis...
September 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29160223/hematology-and-condition-factor-of-tui-chub-and-fathead-minnow-parasitized-by-nematode-from-upper-klamath-lake-oregon-usa
#3
Maurício L Martins, Marcos Tavares-Dias, Andrew J Janik, Michael L Kent, Gabriela T Jerônimo
This study evaluated the hematological profile and condition factor (Kn) of tui chub Siphateles bicolor and fathead minnow Pimephales promelas and their associations with larvae of Contracaecum sp. infection of the heart. A total of 30 tui chub and 17 fathead minnow were collected from Upper Klamath Lake, Oregon, USA, measured, and weighed and blood was drawn for hematological analysis. Nematode larvae parasitized tui chub with a prevalence of 50% and mean intensity of 1.40, while 11.8% of fathead minnow were parasitized at a mean intensity of 1...
November 21, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29157741/biventricular-support-with-intracorporeal-continuous-flow-centrifugal-ventricular-assist-devices
#4
Francisco A Arabía, Carmelo A Milano, Claudius Mahr, Edwin C McGee, Nahush A Mokadam, J Eduardo Rame, Jaime D Moriguchi, Danny Ramzy, David C Naftel, Susan L Myers, James K Kirklin
BACKGROUND: The incidence of right ventricular dysfunction requiring right ventricular assist device after left ventricular assist device placement has been reported between 10% to 30%. The mortality rate is higher compared with patients who require left ventricular assist device only; the most effective and safest biventricular assist device remains unknown. We aimed to determine the survival outcomes and frequency of adverse events in patients with two durable, intracorporeal, continuous flow centrifugal pumps for support...
November 17, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29157563/nr2f1a-balances-atrial-chamber-and-atrioventricular-canal-size-via-bmp-signaling-independent-and-dependent-mechanisms
#5
Tiffany B Duong, Padmapriyadarshini Ravisankar, Yuntao Charlie Song, Jacob T Gafranek, Ariel B Rydeen, Tracy E Dohn, Lindsey A Barske, J Gage Crump, Joshua S Waxman
Determination of appropriate chamber size is critical for normal vertebrate heart development. Although Nr2f transcription factors promote atrial maintenance and differentiation, how they determine atrial size remains unclear. Here, we demonstrate that zebrafish Nr2f1a is expressed in differentiating atrial cardiomyocytes. Zebrafish nr2f1a mutants have smaller atria due to a specific reduction in atrial cardiomyocyte (AC) number, suggesting it has similar requirements to Nr2f2 in mammals. Furthermore, the smaller atria in nr2f1a mutants are derived from distinct mechanisms that perturb AC differentiation at the chamber poles...
November 17, 2017: Developmental Biology
https://www.readbyqxmd.com/read/29154815/vitamin-d-and-new-onset-atrial-fibrillation-a-meta-analysis-of-randomized-controlled-trials
#6
REVIEW
Wei-Ling Huang, Jun Yang, Jian Yang, Hui-Bo Wang, Chao-Jun Yang, Ying Yang
OBJECTIVES: To research vitamin D levels in the prevention of new-onset atrial fibrillation(AF), we conducting a systematic review of randomised controlled trials (RCTs). METHODS: The MEDLINE, EMBASE and Cochrane Library were searched for English-language RCTs published before September 2016.We focus on the vitamin D levels in the prevention of new-onset AF. The outcomes assessed were vitamin D levels, left ventricular ejection fraction (LVEF) and Left atrium diameter...
November 14, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/29153677/the-efficacy-of-peripartum-transthoracic-echocardiography-in-women-with-preeclampsia
#7
Sae Kyung Choi, Jong Chul Shin, Yong Gyu Park, In Yang Park, Ji Young Kwon, Hyun Sun Ko, Yeon Hee Kim
OBJECTIVE: To examine the features and efficacy of transthoracic echocardiography (TTE) in preeclampsia. METHODS: We retrospectively reviewed the medical records of 145 pregnant women with preeclampsia, who underwent TTE at Seoul St. Mary's Hospital between July 2006 and June 2016. We analyzed echocardiographic features in preeclampsia and the relationship between the severity of preeclampsia and TTE findings. Additionally, we examined the predictive echocardiographic factors of persistent hypertension and calculated the adjusted odds ratio (OR) and 95% confidence interval (CI) for multiple regression models by considering systolic and diastolic blood pressure and pre-pregnancy body mass index (BMI)...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29153638/%C3%AE-1-anti-trypsin-improves-function-of-porcine-donor-lungs-during-ex-vivo-lung-perfusion
#8
Huiqing Lin, Manyin Chen, Feng Tian, Jussi Tikkanen, Lei Ding, Hei Yu Andrew Cheung, Daisuke Nakajima, Zhe Wang, Andrea Mariscal, David Hwang, Marcelo Cypel, Shaf Keshavjee, Mingyao Liu
BACKGROUND: Ex-vivo lung perfusion (EVLP), a technique for donor lung assessment, also represents a platform for donor lung repair and immunomodulation. α1-Anti-trypsin (A1AT), a medication used to treat emphysema in A1AT-deficient patients, has anti-inflammatory properties and has been shown to attenuate ischemia-reperfusion injury in rat and pig lung transplants. The objective of this study was to determine whether administration of A1AT during EVLP can improve donor lung quality after prolonged hypothermic preservation...
October 2, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29151486/factors-for-c-kit-expression-in-cardiac-outgrowth-cells-and-human-heart-tissue
#9
Satoshi Matsushita, Kazuo Minematsu, Taira Yamamoto, Hirotaka Inaba, Kenji Kuwaki, Akie Shimada, Yasutaka Yokoyama, Atsushi Amano
We determined the factors associated with the expression of c-kit in the heart and the proliferation of c-kit-positive (c-kit(pos)) cardiac stem cells among the outgrowth cells cultured from human cardiac explants.Samples of the right atrium (RA), left atrium (LA), and left ventricle obtained from patients during open-heart surgery were processed for cell culture of outgrowth cells and tissue analysis. The total number of growing cells and the population of c-kit(pos) cells were measured and compared with c-kit expression in native tissues and characteristics of the patients according to the region of the heart...
November 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/29147788/dissociated-pulmonary-vein-activity-after-cryoballoon-ablation-and-radiofrequency-ablation-for-atrial-fibrillation-a-propensity-score-matched-analysis
#10
Kenichi Tokutake, Michifumi Tokuda, Seiichiro Matsuo, Ryota Isogai, Kenichi Yokoyama, Mika Kato, Ryohsuke Narui, Shinichi Tanigawa, Seigo Yamashita, Satoru Miyanaga, Michihiro Yoshimura, Teiichi Yamane
Cryoballoons (CBs) have proven to be effective for achieving pulmonary vein isolation (PVI) in patients with atrial fibrillation (AF). Dissociated PV activity (DPVA) after successful radiofrequency PVI is sometimes observed inside the PV and has been found to prove the achievement of electrical disconnection from the left atrium. However, little is known about the incidence or characteristics of DPVA after CB-PVI. The aim of this study was to compare the incidence and characteristics of DPVA in patients undergoing CB and radiofrequency (RF) ablation for AF...
November 17, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29146153/the-stress-kinase-jnk-regulates-gap-junction-cx43-gene-expression-and-promotes-atrial-fibrillation-in-the-aged-heart
#11
Jiajie Yan, Justin K Thomson, Weiwei Zhao, Xiaomin Wu, Xianlong Gao, Dominic DeMarco, Wei Kong, Min Tong, Jun Sun, Mamdouh Bakhos, Vladimir G Fast, Qingrong Liang, Sumanth D Prabhu, Xun Ai
BACKGROUND: The stress kinase c-jun N-terminal kinase (JNK) is critical in the pathogenesis of cardiac diseases associated with an increased incidence of atrial fibrillation (AF), the most common arrhythmia in the elderly. We recently discovered that JNK activation is linked to the loss of gap junction connexin43 (Cx43) and enhanced atrial arrhythmogenicity. However, direct evidence for JNK-mediated impairment of intercellular coupling (cell-cell communication) in the intact aged atrium is lacking, as is evidence for whether and how JNK suppresses Cx43 in the aged human atrium...
November 13, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29146107/cardiovascular-anatomy-in-children-with-bidirectional-glenn-anastomosis-regarding-the-transcatheter-fontan-completion
#12
Aleksander Sizarov, Francesca Raimondi, Damien Bonnet, Younes Boudjemline
BACKGROUND: Transcatheter stent-secured completion of total cavopulmonary connection (TCPC) after surgical preparations during the Glenn anastomosis procedure has been reported, but complications from this approach have precluded its clinical acceptance. AIMS: To analyse cardiovascular morphology and dimensions in children with bidirectional Glenn anastomosis, regarding the optimal device design for transcatheter Fontan completion without special surgical "preconditionings"...
November 13, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29142817/an-unusual-case-of-aortic-right-atrium-fistula-a-diagnostic-and-therapeutic-challenge
#13
Maria Chiara Todaro, Alessandro Aprile, Adriana Ravera, Gaetano Senatore
An aorta-to-right atrium (RA) fistula is an anomalous communication between the ascending or descending thoracic aorta and the RA. In this report, we describe a case of an idiopathic aortic root-to-RA fistula occasionally found during a coronary angiography performed in a young patient admitted for acute chest pain with evidence of multivessel coronary artery disease. The anatomical peculiarity of this fistulous communication is that it gave origin to collateral vessels furnishing the inferolateral wall of the left ventricle...
October 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29142369/utility-of-18-f-fluorodeoxyglucose-positron-emission-tomography-magnetic-resonance-imaging-in-the-diagnosis-of-cardiac-paraganglioma
#14
Nicholas Bhojwani, Jennifer Huang, Vasant Garg, Michael Yang, Guilherme H Oliveira, Prabhakar Rajiah
Cardiac paragangliomas are rare tumors of neural crest origin, most frequently seen in the left atrium. There are mixed opinions regarding the most appropriate imaging study for diagnosis and evaluation. We describe the novel utility of 18-F-Fluorodeoxyglucose positron emission tomography/magnetic resonance imaging in the case of a 42-year-old male with cardiac paraganglioma.
October 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29141843/stable-sr-electrophysiological-substrate-ablation-in-the-left-atrium-during-sinus-rhythm-for-the-treatment-of-nonparoxysmal-atrial-fibrillation-a-prospective-multicenter-randomized-clinical-trial
#15
Bing Yang, Chenyang Jiang, Yazhou Lin, Gang Yang, Huimin Chu, Heng Cai, Fengmin Lu, Xianzhang Zhan, Jian Xu, Xinhua Wang, Chi-Keong Ching, Balbir Singh, Young-Hoon Kim, Minglong Chen
BACKGROUND: Circumferential pulmonary vein isolation (CPVI) alone or combined with adjuvant substrate modifications is unsatisfactory for atrial fibrillation (AF) control in nonparoxysmal AF patients. Ablation targeting the fibrotic areas after CPVI (STABLE-SR [Electrophysiological Substrate Ablation in the Left Atrium During Sinus Rhythm]) is a newly evolved substrate modification strategy. METHODS AND RESULTS: In this multicenter, randomized clinical trial, 229 symptomatic nonparoxysmal AF patients were 1:1 randomized to STABLE-SR group (n=114) or conventional STEPWISE group (n=115)...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29139149/under-recognized-entity-of-the-transient-rise-in-the-atrial-capture-threshold-early-after-dual-chamber-pacemaker-implantation
#16
Yoshiko Uehara, Kentaro Yoshida, Akira Kimata, Kojiro Ogawa, Daisuke Abe, Yasuaki Tsumagari, Hidekazu Tsuneoka, Yoshiaki Yui, Yoko Ito, Mari Ebine, Noriyuki Takeyasu, Kazutaka Aonuma, Akihiko Nogami
BACKGROUND: Steroid-eluting pacemaker leads suppress acute rises in pacing threshold by preventing inflammatory processes. However, we occasionally encounter not persistent but transient rise in the atrial capture threshold (TRACT) early after pacemaker implantation. We believe that this phenomenon is under-recognized in clinical practice and may potentially lead to unnecessary re-intervention. We aimed to clarify the prevalence, predictors, and possible mechanisms of TRACT. METHODS AND RESULTS: We reviewed clinical records from 239 consecutive patients who underwent dual-chamber pacemaker implantation for sick sinus syndrome (SSS) (N = 102) or atrioventricular block (AVB) (N = 137)...
November 15, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29139031/in-vivo-analysis-of-the-anti-atrial-fibrillatory-proarrhythmic-and-cardiodepressive-profiles-of-dronedarone-as-a-guide-for-safety-pharmacological-evaluation-of-antiarrhythmic-drugs
#17
Yoshiyuki Motokawa, Yuji Nakamura, Mihoko Hagiwara-Nagasawa, Ai Goto, Koki Chiba, Nur Jaharat Lubna, Hiroko Izumi-Nakaseko, Kentaro Ando, Atsuhiko T Naito, Hiroshi Yamazaki, Atsushi Sugiyama
Anti-atrial fibrillatory, proarrhythmic and cardiodepressive profiles of dronedarone were analyzed using the halothane-anesthetized beagle dogs (n = 4) to create a standard protocol for clarifying both efficacy and adverse effects of anti-atrial fibrillatory drugs. Intravenous administration of dronedarone hydrochloride in doses of 0.3 and 3 mg/kg over 30 s attained the peak plasma concentrations of 61 and 1248 ng/mL, respectively, reflecting sub- to supra-therapeutic ones. The low dose decreased the left ventricular contraction and mean blood pressure, which were enhanced at the high dose...
November 14, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/29137910/tamponade-hemodynamic-and-echocardiographic-diagnosis
#18
REVIEW
Mark J Kearns, Keith R Walley
Cardiac tamponade is a medical emergency that can be readily reversed with timely recognition and appropriate intervention. The clinical diagnosis of cardiac tamponade requires synthesis of a constellation of otherwise non-specific features, based on an understanding of the underlying pathophysiology. Whereas echocardiographic examination is a central component of diagnosis, alone it is insufficient to establish the physiologic diagnosis of hemodynamically significant cardiac tamponade. The hemodynamic diagnosis of cardiac tamponade requires clinical evidence of low cardiac output and stroke volume in the setting of elevated cardiac filling pressures, with evidence of increased sympathetic tone (tachycardia, peripheral vasoconstriction, etc), and exclusion of other causes of shock as the primary problem (particularly cardiogenic shock)...
November 11, 2017: Chest
https://www.readbyqxmd.com/read/29132784/the-elusive-mass-in-the-right-atrium-a-liver-in-the-heart
#19
EDITORIAL
Tsuyoshi Kaneko, Sary F Aranki
No abstract text is available yet for this article.
September 30, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29131350/leiomyosarcoma-of-the-inferior-vena-cava-presenting-as-a-cardiac-mass
#20
Maryam Nabati, Soheil Azizi
Primary tumors of the inferior vena cava (IVC) are rare. The most common primary malignancy is leiomyosarcoma (LMS), with a severe prognosis. Right-atrium (RA) involvement is seen in about 20 percent of cases. We report the case of a 53-year-old woman admitted to the intensive care unit because of progressive dyspnea with lower limb edema. Echocardiography demonstrated a large mass in the RA. At open-heart surgery, the tumor appeared located in the IVC infrahepatic segment, completely obstructing the lumen and extending into the suprahepatic portion and the RA...
November 13, 2017: Journal of Clinical Ultrasound: JCU
keyword
keyword
8574
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"