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https://www.readbyqxmd.com/read/28227245/monitoring-and-detecting-atrial-fibrillation-using-wearable-technology
#1
Shamim Nemati, Mohammad M Ghassemi, Vaidehi Ambai, Nino Isakadze, Oleksiy Levantsevych, Amit Shah, Gari D Clifford, Shamim Nemati, Mohammad M Ghassemi, Vaidehi Ambai, Nino Isakadze, Oleksiy Levantsevych, Amit Shah, Gari D Clifford, Mohammad M Ghassemi, Shamim Nemati, Nino Isakadze, Vaidehi Ambai, Oleksiy Levantsevych, Amit Shah, Gari D Clifford
Atrial fibrillation (AFib) is diagnosed by analysis of the morphological and rhythmic properties of the electrocardiogram. It was recently shown that accurate detection of AFib is possible using beat-to-beat interval variations. This raises the question of whether AFib detection can be performed using a pulsatile waveform such as the Photoplethysmogram (PPG). The recent explosion in use of recreational and professional ambulatory wrist-based pulse monitoring devices means that an accurate pulse-based AFib screening algorithm would enable large scale screening for silent or undiagnosed AFib, a significant risk factor for multiple diseases...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222894/the-relationship-between-left-ventricular-deformation-and-heart-rate-variability-in-patients-with-systemic-sclerosis-two-and-three-dimensional-strain-analysis
#2
Marijana Tadic, Maja Zlatanovic, Cesare Cuspidi, Branislava Ivanovic, Ana Stevanovic, Nemanja Damjanov, Vesna Kocijancic, Vera Celic
OBJECTIVE: We sought to investigate left ventricular (LV) function and deformation, as well as heart rate variability (HRV), and their relationship, in patients with systemic sclerosis (SSc). METHODS: The study included 49 SSc patients and 38 age-matched healthy subjects. All patients underwent clinical examination, serological tests, 24-h Holter monitoring, and comprehensive two- and three-dimensional echocardiography (2DE and 3DE). RESULTS: 2DE and 3DE LV global longitudinal and circumferential strain, as well as 3DE area strains are significantly reduced in SSc patients comparing with controls...
February 14, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28217233/bidirectional-ventricular-tachycardia-in-cardiac-sarcoidosis
#3
Mina M Benjamin, Kevin Hayes, Michael E Field, Melvin M Scheinman, Kurt S Hoffmayer
A 73-year-old man with history of pulmonary sarcoidosis was found to have runs of non-sustained bidirectional ventricular tachycardia (BVT) with two different QRS morphologies on a Holter monitor. Cardiac magnetic resonance delayed gadolinium imaging revealed a region of patchy mid-myocardial enhancement within the left ventricular basal inferolateral myocardium. An 18-fluorodeoxyglucose positron emission tomography (FDG-PET) showed increased uptake in the same area, consistent with active sarcoid, with no septal involvement...
February 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28194254/long-term-continuous-ambulatory-ecg-monitors-and-external-cardiac-loop-recorders-for-cardiac-arrhythmia-a-health-technology-assessment
#4
(no author information available yet)
BACKGROUND: Ambulatory electrocardiography (ECG) monitors are often used to detect cardiac arrhythmia. For patients with symptoms, an external cardiac loop recorder will often be recommended. The improved recording capacity of newer Holter monitors and similar devices, collectively known as longterm continuous ambulatory ECG monitors, suggests that they will perform just as well as, or better than, external loop recorders. This health technology assessment aimed to evaluate the effectiveness, cost-effectiveness, and budget impact of longterm continuous ECG monitors compared with external loop recorders in detecting symptoms of cardiac arrhythmia...
2017: Ontario Health Technology Assessment Series
https://www.readbyqxmd.com/read/28187972/late-results-of-the-cox-maze-iv-procedure-in-patients-undergoing-coronary-artery-bypass-grafting
#5
Matthew R Schill, Farah N Musharbash, Vivek Hansalia, Jason W Greenberg, Spencer J Melby, Hersh S Maniar, Laurie A Sinn, Richard B Schuessler, Marc R Moon, Ralph J Damiano
OBJECTIVE: Most patients with atrial fibrillation (AF) undergoing cardiac surgery do not receive concomitant ablation. This study reviewed outcomes of patients with AF undergoing Cox-maze IV (CMIV) procedure with radiofrequency and cryoablation and coronary artery bypass grafting (CABG) at our institution. METHODS: Between the introduction of radiofrequency ablation in 2002 and 2015, 135 patients underwent left- or biatrial CMIV with CABG. Patients undergoing other cardiac procedures, except mitral valve repair, or who had emergent, reoperative, or off-pump procedures were excluded...
January 16, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28187920/holter-electrocardiogram-monitoring-in-patients-with-acute-ischaemic-stroke-find-afrandomised-an-open-label-randomised-controlled-trial
#6
Rolf Wachter, Klaus Gröschel, Götz Gelbrich, Gerhard F Hamann, Pawel Kermer, Jan Liman, Joachim Seegers, Katrin Wasser, Anna Schulte, Falko Jürries, Anna Messerschmid, Nico Behnke, Sonja Gröschel, Timo Uphaus, Anne Grings, Tugba Ibis, Sven Klimpe, Michaela Wagner-Heck, Magdalena Arnold, Evgeny Protsenko, Peter U Heuschmann, David Conen, Mark Weber-Krüger
BACKGROUND: Atrial fibrillation is a major risk factor for recurrent ischaemic stroke, but often remains undiagnosed in patients who have had an acute ischaemic stroke. Enhanced and prolonged Holter-electrocardiogram-monitoring might increase detection of atrial fibrillation. We therefore investigated whether enhanced and prolonged rhythm monitoring was better for detection of atrial fibrillation than standard care procedures in patients with acute ischaemic stroke. METHODS: Find-AFRANDOMISED is an open-label randomised study done at four centres in Germany...
February 8, 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28186939/cardiac-diagnostic-work-up-for-atrial-fibrillation-after-transient-ischaemic-attacks-in-england-and-wales-results-from-a-cross-sectional-survey
#7
Olivia Geraghty, Eleni Korompoki, Filippos T Filippidis, Anthony Rudd, Roland Veltkamp
OBJECTIVES: Transient ischaemic attacks (TIAs) are an important precursor of stroke. Atrial fibrillation (AF) is among the most dangerous aetiologies shared between TIAs and strokes. Detection of AF after TIAs is essential for the initiation of oral anticoagulants. We aimed to identify variations in the use of cardiac investigations used to detect AF and cardiac pathology in patients with TIA in the UK. SETTING: All TIA clinical leads in England and Wales received an invitation by email to participate in an online survey in February 2015...
November 10, 2016: BMJ Open
https://www.readbyqxmd.com/read/28181355/measures-of-and-changes-in-heart-rate-variability-in-pediatric-heart-transplant-recipients
#8
T Williams, X Tang, G Gilmore, J Gossett, K R Knecht
Heart rate variability is primarily regulated by the autonomic nervous system. Heart transplant recipients undergo surgical denervation of the graft, which results in interruption of autonomic innervation with resultant diminished heart rate variability although some degree of autonomic control may return. This study aimed to characterize heart rate variability in this population. We report a retrospective review of Holter monitor data from transplanted patients between 2005 and 2013. Studies with significant atrial or ventricular arrhythmias were excluded...
February 8, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28181276/modulation-of-autonomic-nervous-activity-in-the-termination-of-paroxysmal-atrial-fibrillation
#9
Jen-Hung Huang, Yung-Kuo Lin, Ming-Hsiung Hsieh, Shih-Ann Chen, Wan-Chun Chiu, Yi-Jen Chen
BACKGROUND: Autonomic nervous activity plays a critical role in the genesis of paroxysmal atrial fibrillation (AF, PAF). However, the role of autonomic nervous activity on AF termination has not been elucidated. Heart rate variability (HRV) is widely used to evaluate autonomic nervous activity in humans. The purpose of this study was to assess whether autonomic nervous activity assessed by HRV contributes to AF termination. METHODS: Electrocardiograms (ECGs) and HRV were studied in patients with termination of sustained (>30 s) PAF by 24-h ambulatory Holter monitoring...
February 9, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28180102/concomitant-right-ventricular-outflow-tract-cryoablation-during-pulmonary-valve-replacement-in-a-patient-with-tetralogy-of-fallot
#10
Hong Ju Shin, Seunghwan Song, Yu Rim Shin, Han Ki Park, Young Hwan Park
A 38-year-old female patient with a history of tetralogy of Fallot repair at 10 years of age underwent pulmonary valve replacement with a mechanical prosthesis, tricuspid annuloplasty, and right ventricular outflow tract cryoablation due to pulmonary regurgitation, tricuspid regurgitation, and multiple premature ventricular contractions with sustained ventricular tachycardia. After surgery, she had an uneventful postoperative course with arrhythmia monitoring. She was discharged without incident, and a follow-up Holter examination showed a decrease in the number of ventricular ectopic beats from 702 to 41...
February 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28178140/utility-of-duranta-a-wireless-patch-type-electrocardiographic-monitoring-system-developed-in-japan-in-detecting-covert-atrial-fibrillation-in-patients-with-cryptogenic-stroke-a-case-report
#11
Hisanao Akiyama, Saki Nukui, Takashi Araga, Masashi Hoshino, Keita Tanaka, Satoru Kashima, Rie Sasaki, Kenji Uchino, Yasuhiro Hasegawa
RATIONALE: Subcutaneous implantable electrocardiographs are highly effective in detecting covert atrial fibrillation (AF) in cryptogenic stroke. However, these invasive devices are not indicated for all cryptogenic stroke patients, and noninvasive improvements over conventional Holter-type ambulatory electrocardiography are needed. We evaluated the clinical application and effectiveness of Duranta (ImageONE Co., Ltd.), a wireless patch-type electrocardiographic monitoring system developed in Japan for chronically ill patients or home-based patients at the end of life...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28174323/mild-hypokalemia-and-supraventricular-ectopy-increases-the-risk-of-stroke-in-community-dwelling-subjects
#12
Nick Mattsson, Preman Kumarathurai, Bjørn Strøier Larsen, Olav Wendelboe Nielsen, Ahmad Sajadieh
BACKGROUND AND PURPOSE: Stroke is independently associated with the common conditions of hypokalemia and supraventricular ectopy, and we hypothesize that the combination of excessive supraventricular ectopic activity and hypokalemia has a synergistic impact on the prognosis in terms of stroke in the general population. METHODS: Subjects (55-75 years old) from the Copenhagen Holter Study cohort (N=671) with no history of atrial fibrillation or stroke were studied-including baseline values of potassium and ambulatory 48-hour Holter monitoring...
February 7, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28155223/evaluation-of-prolonged-qt-interval-structural-heart-disease-mimicking-long-qt-syndrome
#13
Adaya Weissler-Snir, Michael H Gollob, Vijay Chauhan, Melanie Care, Danna A Spears
BACKGROUND: In about 20-25% of patients with congenital long QT syndrome (LQTS) a causative pathogenic mutation is not found. The aim of this study was to explore the prevalence of alternative cardiac diagnoses among patients exhibiting prolongation of QT interval with negative genetic testing for LQTS genes. METHODS: We conducted a retrospective analysis of 239 consecutive patients who were evaluated in the inherited arrhythmia clinic at the Toronto General Hospital between July 2013 and December 2015 for possible LQTS...
February 3, 2017: Pacing and Clinical Electrophysiology: PACE
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
#14
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/28144262/staged-hybrid-ablation-for-persistent-and-longstanding-persistent-atrial-fibrillation-effectively-restores-sinus-rhythm-in-long-term-observation
#15
Michal Zembala, Krzysztof Filipiak, Oskar Kowalski, Piotr Buchta, Tomasz Niklewski, Pawel Nadziakiewicz, Rafał Koba, Mariusz Gąsior, Zbigniew Kalarus, Marian Zembala
INTRODUCTION: Hybrid ablation (HABL) of atrial fibrillation combining endoscopic, minimally invasive, closed chest epicardial ablation with endocardial CARTO-guided accuracy was introduced to overcome the limitations of current therapeutic options for patients with persistent (PSAF) and longstanding persistent atrial fibrillation (LSPAF). The purpose of this study was to evaluate the procedural safety and feasibility as well as effectiveness of HABL in patients with PSAF and LSPAF 1 year after the procedure...
February 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28134128/atrial-fibrillation-and-sympathovagal-balance-in-patients-with-gastroesophageal-reflux-disease
#16
Mariana Floria, Oana Bărboi, Mihaela Grecu, Cristina Cijevschi Prelipcean, Gheorghe Balan, Vasile Liviu Drug
BACKGROUND/AIMS: Similar autonomic innervation of the esophagus and left atrium with sympathovagal imbalance seems to explain the association between non-valvular atrial fibrillation (AF) and gastroesophageal reflux disease (GERD). We aimed to assess this association via parameters of heart rate variability in time (SDNN) and frequency (low-frequency (LF)/high-frequency (HF) ratio) domains by 24-hour electrocardiographic (ECG) Holter monitoring. MATERIALS AND METHODS: One hundred thirty-five patients were prospectively included by a joint team consisting of a gastroenterologist and a cardiologist on the basis of the patients' complaints...
January 30, 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28123762/percutaneous-pfo-closure-for-cryptogenic-stroke-in-the-setting-of-a-systematic-cardiac-and-neurological-screening-and-a-standardised-follow-up-protocol
#17
Stéphane Noble, Robert F Bonvini, Fabio Rigamonti, Roman Sztajzel, Fabienne Perren, Philippe Meyer, Hajo Müller, Marco Roffi
BACKGROUND: There are no uniform workup and follow-up (FU) protocols for patients presenting with cryptogenic embolism (CE) who undergo percutaneous closure of a patent foramen ovale (PFO). METHODS: We prospectively performed a systematic cardiac and neurological FU protocol in all patients who underwent percutaneous PFO closure in order to assess the incidence of subsequent cardiac and neurological adverse events. All patients received dual antiplatelet therapy for 6 months and were systematically included in a 12-month standardised FU protocol including: clinical evaluation-transthoracic and transoesophageal echocardiography, 24-hour Holter monitoring and/or 1-week R-test, and transcranial Doppler...
2017: Open Heart
https://www.readbyqxmd.com/read/28118049/are-changes-in-heart-rate-variability-during-hypoglycemia-confounded-by-the-presence-of-cardiovascular-autonomic-neuropathy-in-patients-with-diabetes
#18
Simon Lebech Cichosz, Jan Frystyk, Lise Tarnow, Jesper Fleischer
BACKGROUND: We have recently shown how the combination of information from continuous glucose monitor (CGM) and heart rate variability (HRV) measurements can be used to construct an algorithm for prediction of hypoglycemia in both bedbound and active patients with type 1 diabetes (T1D). Questions remain on how cardiovascular autonomic neuropathy (CAN) influences these measurable changes. This study aims to examine if changes in HRV during hypoglycemia are confounded by the presence of CAN...
February 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28117736/evaluation-of-commercial-self-monitoring-devices-for-clinical-purposes-results-from-the-future-patient-trial-phase-i
#19
Soren Leth, John Hansen, Olav W Nielsen, Birthe Dinesen
: Commercial self-monitoring devices are becoming increasingly popular, and over the last decade, the use of self-monitoring technology has spread widely in both consumer and medical markets. The purpose of this study was to evaluate five commercially available self-monitoring devices for further testing in clinical applications. Four activity trackers and one sleep tracker were evaluated based on step count validity and heart rate validity. METHODS: The study enrolled 22 healthy volunteers in a walking test...
January 22, 2017: Sensors
https://www.readbyqxmd.com/read/28114980/the-impact-of-torasemide-on-haemodynamic-and-neurohormonal-stress-and-cardiac-remodelling-in-heart-failure-tornado-a-study-protocol-for-a-randomized-controlled-trial
#20
Paweł Balsam, Krzysztof Ozierański, Agata Tymińska, Renata Główczyńska, Michał Peller, Anna Fojt, Andrzej Cacko, Bartosz Sieradzki, Elwira Bakuła, Maciej Markulis, Robert Kowalik, Zenon Huczek, Krzysztof J Filipiak, Grzegorz Opolski, Marcin Grabowski
BACKGROUND: Approximately 50% of heart failure patients are readmitted to hospital within 6 months, owing to deterioration of their condition. Thus, symptomatic treatment of heart failure requires significant improvement. The aim of this study is to compare the effects of torasemide and furosemide on biochemical parameters of haemodynamic and neurohormonal compensation, myocardial remodelling, clinical outcomes and quality of life in patients with chronic heart failure. METHODS: This is a multicentre, randomized, open, blinded endpoint phase-IV trial...
January 23, 2017: Trials
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