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Atrial Fibrillation and Radiation

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https://www.readbyqxmd.com/read/28315567/a-practical-guide-for-building-a-highway-between-atria-during-transseptal-puncture-without-radiation
#1
Yuan Yuan, Deyong Long, Caihua Sang, Ling Tao, Jianzeng Dong, Changsheng Ma
OBJECTIVE: To investigate whether switching the ablation catheter between the right and left atria through transseptal puncture site can be accurately performed without fluoroscopy. METHODS: Forty patients with persistent atrial fibrillation (mean age, 60.2±7.4 years; 65% males) got "2C3L" approach were randomized in a 1:1 ratio to undergo either crossing interatrial septum guided by fluoroscopy (trackless group) or crossing septum guided by track image that was mapped by Carto3 system (track group)...
March 9, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28215568/reduction-in-radiation-dose-for-atrial-fibrillation-ablation-over-time-a-12-year-single-center-experience-of-2344-patients
#2
Aleksandr Voskoboinik, Elana S Kalman, Yonatan Savicky, Paul B Sparks, Joseph B Morton, Geoffrey Lee, Peter M Kistler, Jonathan M Kalman
BACKGROUND: Pulmonary vein isolation (PVI) is a well-established treatment of atrial fibrillation (AF), with contact force (CF)-sensing catheters joining 3-dimensional mapping systems and image integration as technological advancements over the last decade. OBJECTIVE: The purpose of this study was to analyze trends in radiation exposure for AF ablation over the last 12 years at our center. METHODS: We reviewed prospectively collected data of 2344 consecutive PVI procedures for either paroxysmal or persistent AF between January 2004 and December 2015...
February 12, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28209944/impact-of-contact-force-technology-on-reducing-the-recurrence-and-major-complications-of-atrial-fibrillation-ablation-a-systematic-review-and-meta-analysis
#3
Xianhui Zhou, Wenkui Lv, Wenhui Zhang, Yuanzheng Ye, Yaodong Li, Qina Zhou, Qiang Xing, Jianghua Zhang, Yanmei Lu, Ling Zhang, Hongli Wang, Wen Qin, Baopeng Tang
Contact force (CF) monitoring can be useful in accomplishing circumferential pulmonary vein (PV) isolation for atrial fibrillation (AF). This meta-analysis aimed to assess the efficacy and safety of a CF-sensing catheter in treating AF. Randomized controlled trials or non-randomized observational studies comparing AF ablation using CF-sensing or standard non-CF (NCF)-sensing catheters were identified from PubMed, EMBASE, Cochrane Library, Wanfang Data, and China National Knowledge Infrastructure (January 1, 1998-2016)...
February 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28205119/use-of-three-dimensional-computed-tomography-overlay-for-real-time-cryoballoon-ablation-in-atrial-fibrillation-reduces-radiation-dose-and-contrast-dye
#4
B Oude Velthuis, M Molenaar, H G Reinhart Dorman, J Y Stevenhagen, M F Scholten, J van der Palen, J M van Opstal
AIMS: Cryoballoon pulmonary vein (PV) isolation in patients with atrial fibrillation has proven to be effective in short-term and long-term follow-up. To visualise the PV anatomy, pre-ablation contrast pulmonary venography is commonly performed. Three-dimensional (3D) computed tomography (CT) overlay is a new technique creating a live 3D image of the left atrium by integrating a previously obtained CT scan during fluoroscopy. To evaluate the benefits of 3D CT overlay during cryoballoon ablation, we studied the use of 3D CT overlay versus contrast pulmonary venography in a randomised fashion in patients with paroxysmal atrial fibrillation undergoing cryoballoon PV isolation...
February 15, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28185351/persistent-atrial-fibrillation-ablation-with-or-without-contact-force-sensing
#5
Ayman A Hussein, Amr F Barakat, Walid I Saliba, Khaldoun G Tarakji, Mohamed Bassiouny, Bryan Baranowski, Patrick Tchou, Mandeep Bhargava, Thomas Dresing, Thomas Callahan, Daniel Cantillon, Mohamed Kanj, Bruce D Lindsay, Oussama M Wazni
INTRODUCTION: Arrhythmia recurrences remain common after ablation of persistent atrial fibrillation (PersAF). Contact force sensing catheters have been introduced for objective assessment of contact during radiofrequency application and have been suggested to improve outcomes in ablation of paroxysmal AF, but little is known about their role in PersAF ablation. We aimed to compare the procedural profiles and outcomes of (PersAF) ablation with or without using contact force (CF) sensing catheters...
February 10, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28160298/fluoroless-catheter-ablation-of-cardiac-arrhythmias-a-5-year-experience
#6
Mansour Razminia, M Cameron Willoughby, Hany Demo, Hesam Keshmiri, Theodore Wang, Oliver J D'Silva, Terry A Zheutlin, Hakeem Jibawi, Paul Okumale, Richard F Kehoe
BACKGROUND: Catheter ablations have been traditionally performed with the use of fluoroscopic guidance, which exposes the patient and staff to the inherent risks of radiation. We have developed techniques to eliminate the use of fluoroscopy during cardiac ablations and have been performing completely fluoroless catheter ablations on our patients for over 5 years. METHODS: We present a retrospective analysis of the safety, efficacy, and feasibility data from 500 consecutive patients who underwent nonfluoroscopic catheter ablation, targeting a total of 639 arrhythmias, including atrioventricular reciprocating tachycardia (AVRT), atrioventricular nodal reentrant tachycardia (AVNRT), atrial tachycardia (AT), atrial fibrillation (AF), premature ventricular contractions (PVC), and ventricular tachycardia (VT)...
February 3, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28157261/mediguide-assisted-transseptal-puncture-without-echocardiographic-guidance
#7
Gabriel Ballesteros, Pablo Ramos Ardanaz, Renzo Neglia, Marcel Palacio Solís, Cristina Díaz Fernández, Graciela López González, Elene Janiashvili, Ignacio García-Bolao
BACKGROUND: First description of a technique for left atrium transseptal puncture (TSP) with minimal radiation exposure by using the nonfluoroscopic MediGuide™ tracking system (MG) without the assistance of intracardiac echocardiography. METHODS: This study included 31 consecutive patients with atrial fibrillation undergoing an MG assisted percutaneous catheter ablation procedure. A Brockenbrough transseptal needle (BRK) is connected to a standard pressure transducer through a two input valve...
February 3, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28132957/risk-of-heart-failure-with-preserved-ejection-fraction-in-older-women-after-contemporary-radiotherapy-for-breast-cancer
#8
Hirofumi Saiki, Ivy A Petersen, Christopher G Scott, Kent R Bailey, Shannon M Dunlay, Randi R Finley, Kathryn J Ruddy, Elizabeth Yan, Margaret M Redfield
BACKGROUND: -Cardiomyocytes are resistant to radiation. However, cardiac radiation exposure causes coronary microvascular endothelial inflammation, a perturbation implicated in the pathogenesis of heart failure (HF) and particularly, HF with preserved ejection fraction (HFpEF). Radiotherapy for breast cancer results in variable cardiac radiation exposure and may increase the risk of HF. METHODS: -We conducted a population-based case-control study of incident HF in 170 female residents of Olmsted County, Minnesota (59 cases and 111 controls) who underwent contemporary (1998-2013) radiotherapy for breast cancer utilizing computed tomography-assisted radiotherapy planning...
January 29, 2017: Circulation
https://www.readbyqxmd.com/read/28044988/feasibility-of-concomitant-mitraclip-and-left-atrial-appendage-occlusion
#9
Shingo Kuwata, Maurizio Taramasso, Michel Zuber, Gabor Suetsch, Adrian Attinger-Toller, David Wicki, Francesco Maisano, Fabian Nietlispach
AIMS: The aim of our study is to report our single-centre experience with concomitant MitraClip (MC) and left atrial appendage occlusion (LAAO) and further to assess the feasibility, safety and short-term outcome of such an approach. METHODS AND RESULTS: Twenty-five consecutive patients underwent MC with concomitant LAAO at our hospital (combined group). As a control group, 25 consecutive patients with atrial fibrillation (AF) undergoing standalone MC were selected...
March 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28029558/radiation-dose-levels-of-retrospectively-ecg-gated-coronary-ct-angiography-using-70-kvp-tube-voltage-in-patients-with-high-or-irregular-heart-rates
#10
Mathias Meyer, Holger Haubenreisser, Uwe Joseph Schoepf, Rozemarijn Vliegenthart, Melissa M Ong, Christina Doesch, Sonja Sudarski, Martin Borggrefe, Stefan O Schoenberg, Thomas Henzler
RATIONALE AND OBJECTIVES: Despite ongoing technical refinements, coronary computed tomography angiography (cCTA) remains challenging in its diagnostic value by electrocardiographic (ECG) misregistration and motion artifacts, which commonly occur in patients with atrial fibrillation and high or irregular heart rates. The aim of this study was to evaluate the radiation dose and the number of inconclusive coronary segments at cCTA using retrospective ECG gating at 100 and 70 kV. MATERIALS AND METHODS: With institutional review board approval, 154 patients (median age 54 years, 98 men) with high or irregular heart rate prospectively underwent retrospectively ECG-gated cCTA without tube current modulation on a third-generation dual-source computed tomography (DSCT) system at 70 kV (n = 103) or on a second-generation DSCT system at 100 kV (n = 51)...
October 28, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27978516/prognostic-significance-of-dementia-in-older-adults-with-solid-tumors
#11
Supakanya Wongrakpanich, Amy Hurst, Jean Bustamante, Nellowe Candelario, Sylvia Biso, Wikrom Chaiwatcharayut, Claudia Dourado, Andrew Rosenzweig
BACKGROUND: The public health burden of cancer and dementia in the geriatric population is well documented. There is limited data on how dementia predicts mortality among geriatric patients with solid tumors. The objective of this study is to determine the prognostic significance of dementia on survival in patients with solid tumors. METHODS: We performed a 5-year retrospective study on elderly subjects aged ≥60 years with and without dementia that were diagnosed with solid tumors...
2017: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/27941401/new-standards-of-care-in-ischemic-stroke
#12
Bree K Chancellor, Koto Ishida
BACKGROUND: Ischemic arterial strokes of the ophthalmic artery and its branches and posterior cerebral artery are common causes of visual disability. Etiologies of stroke affecting the retina, optic nerve, optic radiation, and visual cortex overlap with other types of ischemic strokes. Stenosis of the internal carotid is the most common cause of central retinal artery occlusion (CRAO). One-fourth of patients with CRAO have cerebral strokes. We report recent developments in the acute treatment and secondary prevention of ischemic stroke of relevance to clinicians who encounter patients with acute vision loss...
December 8, 2016: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/27928144/long-term-clinical-outcomes-and-prognostic-factors-after-pericardiectomy-for-constrictive-pericarditis-in-a-japanese-population
#13
Shunsuke Nishimura, Chisato Izumi, Masashi Amano, Sari Imamura, Naoaki Onishi, Yodo Tamaki, Soichiro Enomoto, Makoto Miyake, Toshihiro Tamura, Hirokazu Kondo, Kazuaki Kaitani, Kazuo Yamanaka, Yoshihisa Nakagawa
BACKGROUND: Constrictive pericarditis (CP) is characterized by impaired diastolic cardiac function leading to heart failure. Pericardiectomy is considered effective treatment for CP, but data on long-term clinical outcomes after pericardiectomy are limited.Methods and Results:We retrospectively investigated 45 consecutive patients (mean age, 59±14 years) who underwent pericardiectomy for CP. Preoperative clinical factors, parameters of cardiac catheterization, and cardiac events were examined...
January 25, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/27888758/left-atrium-and-pulmonary-vein-imaging-using-sub-millisiviert-cardiac-computed-tomography-impact-on-radiofrequency-catheter-ablation-cumulative-radiation-exposure-and-outcome-in-atrial-fibrillation-patients
#14
Gianluca Pontone, Daniele Andreini, Maria Petulla, Andrea Annoni, Andrea I Guaricci, Ester Innocenti, Eleonora Russo, Marco Guglielmo, Saima Mushtaq, Andrea Baggiano, Virginia Beltrama, Laura Fusini, Chiara Segurini, Edoardo Conte, Alberto Formenti, Gaetano Fassini, Stefania Riva, Claudio Tondo, Piergiuseppe Agostoni, Antonio L Bartorelli, Mauro Pepi
BACKGROUND: The outcome of radiofrequency catheter ablation (RFCA) of atrial fibrillation (AF) has improved thanks to left atrium (LA) anatomy reconstruction by cardiac computed tomography (CCT). A new model-based iterative reconstruction algorithm (MBIR) provides image noise reduction achieving effective radiation dose (ED) close to chest X-ray exposure. Aim of this study was comparing RFCA procedural characteristics, AF recurrence and radiation exposure between patients in whom RFCA was guided by CCT image integration with MBIR versus a CCT standard protocol...
February 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/27861400/cardiac-helical-ct-involving-a-low-radiation-dose-protocol-with-a-100-kvp-setting-usefulness-of-hybrid-iterative-reconstruction-and-display-preset-optimization
#15
RANDOMIZED CONTROLLED TRIAL
Yuji Iyama, Takeshi Nakaura, Koichi Yokoyama, Masafumi Kidoh, Yasuyuki Yamashita
To compare the radiation dose and image quality of retrospective electrocardiogram (ECG)-gated cardiac computed tomography (CT) between a 100-kVp protocol, hybrid iterative reconstruction (HIR), and display preset optimization and the 120-kVp protocol.We prospectively enrolled 100 patients with tachycardia or atrial fibrillation scanned retrospective ECG-gated cardiac CT. We randomly assigned 50 patients to the 120-kVp protocol and 50 patients to the 100-kVp protocol. We compared effective doses (EDs) between the two protocols...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27788744/-clinical-analysis-of-19-cases-of-pregnant-women-with-rapid-arrhythmia-in-the-treatment-of-radiofrequency-catheter-ablation
#16
L Chu, J Zhang, Y N Li, D Y Long
Objective: To investigate the risk of radiofrequency catheter ablation and maternal and infant in pregnant women with rapid arrhythmia during pregnancy. Methods: The clinical data of the 19 cases of pregnancy complicated with rapid arrhythmia were retrospectively analyzed and followed up, including the gestational week, the type of arrhythmia, the treatment, and the outcome of the mother and child in Beijing Anzhen Hospital of Capital Medical University from January 2002 to March 2016. Results: (1)Clinical characteristics: the ages of the 19 cases were(31±4)years old(ranged from 26 to 35 years old), the onset gestational ages were(21±4)weeks(ranged from 15 to 32 weeks)...
October 25, 2016: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/27779127/towards-real-time-mri-guided-3d-localization-of-deforming-targets-for-non-invasive-cardiac-radiosurgery
#17
S Ipsen, O Blanck, N J Lowther, G P Liney, R Rai, F Bode, J Dunst, A Schweikard, P J Keall
Radiosurgery to the pulmonary vein antrum in the left atrium (LA) has recently been proposed for non-invasive treatment of atrial fibrillation (AF). Precise real-time target localization during treatment is necessary due to complex respiratory and cardiac motion and high radiation doses. To determine the 3D position of the LA for motion compensation during radiosurgery, a tracking method based on orthogonal real-time MRI planes was developed for AF treatments with an MRI-guided radiotherapy system. Four healthy volunteers underwent cardiac MRI of the LA...
November 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27674031/increased-rate-of-postoperative-atrial-fibrillation-after-neoadjuvant-dose-escalated-dose-painting-intensity-modulated-radiation-therapy-for-locally-advanced-esophageal-cancer-a-dosimetric-analysis
#18
P S Venkat, S Leuthold, W Jin, M Fradley, S E Hoffe, J P Fontaine, J M Pimiento, K Almhanna, J M Frakes
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27660737/late-gadolinium-enhancement-cardiac-magnetic-resonance-imaging-post-robotic-radiosurgical-pulmonary-vein-isolation-rrpvi-first-case-in-the-world
#19
Edgar Monroy, Jose Azpiri, Cuauhtémoc De La Peña, Carlos Cardona, Miguel Hinojosa, Rafael Zamarripa, Jose Assad
Pulmonary vein isolation using robotic radiosurgery system CyberKnife is a new non-invasive treatment of atrial fibrillation, currently in clinical phase. Robotic radiosurgical pulmonary vein isolation (RRPVI) uses stereotactic, non-invasive (painless) pinpoint radiation energy delivery to a small, precise area to accomplish ablation. The purpose of this report is to describe the finding of an increase in the enhancement of the left atrium demonstrated with the use of cardiac magnetic resonance imaging using late gadolinium enhancement (LGE-CMR) as a result of RRPVI in the first case in the world in humans using CyberKnife as a treatment for paroxysmal atrial fibrillation (PAF)...
August 15, 2016: Curēus
https://www.readbyqxmd.com/read/27617094/reduction-of-fluoroscopy-time-and-radiation-dosage-during-catheter-ablation-for-atrial-fibrillation
#20
Kenichiro Yamagata, Bashar Aldhoon, Josef Kautzner
Radiofrequency catheter ablation has become the treatment of choice for atrial fibrillation (AF) that does not respond to antiarrhythmic drug therapy. During the procedure, fluoroscopy imaging is still considered essential to visualise catheters in real-time. However, radiation is often ignored by physicians since it is invisible and the long-term risks are underestimated. In this respect, it must be emphasised that radiation exposure has various potentially harmful effects, such as acute skin injury, malignancies and genetic disease, both to patients and physicians...
August 2016: Arrhythmia & Electrophysiology Review
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