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https://www.readbyqxmd.com/read/28086891/measurement-of-electrocardiograms-in-a-bath-through-tap-water-utilizing-capacitive-coupling-electrodes-placed-outside-the-bathtub-wall
#1
Kosuke Motoi, Yasuhiro Yamakoshi, Takehiro Yamakoshi, Hiroaki Sakai, Naoto Tanaka, Ken-Ichi Yamakoshi
BACKGROUND: Taking a bath sometimes poses a risk for subjects with chronic cardiopulmonary disorders, due to the thermal effect and water pressure on his/her body. The ECG measurement would be helpful for the early recognition of abnormal cardiac beats and respiratory conditions. This paper describes a new attempt to improve on previous bathtub ECG measurement techniques that had electrodes placed inside the bathtub that were intrusive to the subjects' bathing experience. This study is concerned with the initial development of a method to measure an electrocardiogram (ECG) through tap water without conscious awareness of the presence of electrodes that are placed outside the bathtub wall...
January 11, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28065822/detecting-drug-induced-changes-in-ecg-parameters-using-jacketed-telemetry-effect-of-different-data-reduction-techniques
#2
Matthew Skinner, Guozhen Xing, Jing Lu, Jin Ren, Karen Oldman
INTRODUCTION: Continuous cardiovascular data is routinely collected during preclinical safety assessment of new medicines. This generates large datasets, which must be summarised to analyse and interpret drug effects. We assessed four methods of data reduction of continuous electrocardiogram (ECG) data and examined the impact on the statistical power of the assay. METHODS: Continuous ECG data were collected from a validation study in 6 cynomolgus monkeys using jacketed telemetry...
January 5, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28059577/echocardiography-is-useful-to-predict-postoperative-atrial-fibrillation-in-patients-undergoing-isolated-coronary-bypass-surgery-a-prospective-study
#3
Julien Magne, Baptiste Salerno, Dania Mohty, Claire Serena, Florence Rolle, Alessandro Piccardo, Najmeddine Echahidi, Alexandre Le Guyader, Victor Aboyans
OBJECTIVE: Postoperative atrial fibrillation is a major complication following coronary artery bypass graft. We hypothesized that, beyond clinical and electrocardiogram (ECG) data, transthoracic echocardiography could improve the prediction of postoperative atrial fibrillation. METHODS: We prospectively studied 169 patients in sinus rhythm who underwent isolated coronary artery bypass graft in our institution. Clinical, biological, ECG and transthoracic echocardiography data were collected within 24 h before surgery...
January 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28058408/msieve-differential-behavioral-privacy-in-time-series-of-mobile-sensor-data
#4
Nazir Saleheen, Supriyo Chakraborty, Nasir Ali, Md Mahbubur Rahman, Syed Monowar Hossain, Rummana Bari, Eugene Buder, Mani Srivastava, Santosh Kumar
Differential privacy concepts have been successfully used to protect anonymity of individuals in population-scale analysis. Sharing of mobile sensor data, especially physiological data, raise different privacy challenges, that of protecting private behaviors that can be revealed from time series of sensor data. Existing privacy mechanisms rely on noise addition and data perturbation. But the accuracy requirement on inferences drawn from physiological data, together with well-established limits within which these data values occur, render traditional privacy mechanisms inapplicable...
September 2016: Proceedings of the ACM International Conference on Ubiquitous Computing
https://www.readbyqxmd.com/read/28056969/voluntary-attendance-of-small-group-brainstorming-tutoring-courses-intensify-new-clerk-s-excellence-in-clinical-care-a-pilot-study
#5
Ling-Yu Yang, Chia-Chang Huang, Hui-Chi Hsu, Ying-Ying Yang, Ching-Chi Chang, Chiao-Lin Chuang, Wei-Shin Lee, Jen-Feng Liang, Hao Min Cheng, Chin-Chou Huang, Fa-Yauh Lee, Shung-Tai Ho, Ralph Kirby
BACKGROUND: Clerkship provides a unique way of transferring the knowledge and skills gathered during medical school's curriculum into real-ward clinical care environment. The annual program evaluation has indicated that the training of clerks in diagnostic and clinical reasoning skills needed to be enhanced. Recently, "clinical excellence" program have been promoted in our institution to augment the excellence in clinical care of new clerks. Current study aims to evaluate whether this pilot program improve the "clinical excellence" of new clerks...
January 6, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28045723/rate-dependent-left-bundle-branch-block-in-an-ambulatory-surgery-patient-a-case-report
#6
Ashraf Farag, Justin Tsai, Sam Deeb, Deidre Putman-Garcia, John D Wasnick, Lydia A Conlay
A 52-year-old woman, ASA II (American Society of Anesthesia classification II) scheduled for cholecystectomy in an ambulatory center, exhibited a wide-complex tachycardia with ectopy on the monitor after induction with propofol and succinylcholine. Blood pressure remained stable; amiodarone was administered for presumed ventricular tachycardia. A 12-lead electrocardiogram (ECG) showed a new left bundle branch block (LBBB) at 98 beats per minute (bpm), which resolved when the heart rate slowed. Surgery was postponed, and both the LBBB and ectopy recurred frequently during the next 24 hours in the intensive care unit, particularly at heart rates >90 bpm...
December 30, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/28043617/bedaquiline-in-the-multidrug-resistant-tuberculosis-treatment-belarus-experience
#7
Alena Skrahina, Hennadz Hurevich, Dennis Falzon, Liudmila Zhilevich, Valiantsin Rusovich, Masoud Dara, Svetlana Setkina
BACKGROUND/OBJECTIVE: Outcomes of treatment for multidrug-resistant tuberculosis (MDR-TB) remain poor worldwide. Among patients with MDR-TB in Belarus who started treatment in 2012, only 54% completed it successfully, with treatment failure reported in 22% of the patients; additionally, 11% died and 13% were lost to follow-up or remained unevaluated. In Belarus, to improve outcomes, bedaquiline was introduced in MDR-TB treatment in June 2015. The national TB program developed measures to monitor safety and effectiveness of bedaquiline-containing regimens in line with the World Health Organization recommendations...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28040865/cse-database-extended-annotations-and-new-recommendations-for-ecg-software-testing
#8
Radovan Smíšek, Lucie Maršánová, Andrea Němcová, Martin Vítek, Jiří Kozumplík, Marie Nováková
Nowadays, cardiovascular diseases represent the most common cause of death in western countries. Among various examination techniques, electrocardiography (ECG) is still a highly valuable tool used for the diagnosis of many cardiovascular disorders. In order to diagnose a person based on ECG, cardiologists can use automatic diagnostic algorithms. Research in this area is still necessary. In order to compare various algorithms correctly, it is necessary to test them on standard annotated databases, such as the Common Standards for Quantitative Electrocardiography (CSE) database...
December 31, 2016: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28039280/selection-of-critical-isthmus-in-scar-related-atrial-tachycardia-using-a-new-automated-ultrahigh-resolution-mapping-system
#9
Decebal Gabriel Laţcu, Sok-Sithikun Bun, Frédéric Viera, Tahar Delassi, Mohammed El Jamili, Alaa Al Amoura, Nadir Saoudi
BACKGROUND: Accurate activation mapping of reentrant scar-related atrial tachycardias (AT) allows efficient radiofrequency ablation by targeting the critical isthmus (CI). We aimed to assess the electrophysiological properties of CI channels during mapping with the IntellaMap Orion basket and the Rhythmia system. METHODS AND RESULTS: We prospectively studied 33 AT (post- atrial fibrillation ablation or surgical mitral valve repair). The noise of bipolar electrogram (EGM) was systematically measured at 10 prespecified sites, as well as on a standard catheter and on the surface ECG...
January 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28035635/ecg-signal-denoising-via-empirical-wavelet-transform
#10
Omkar Singh, Ramesh Kumar Sunkaria
This paper presents new methods for baseline wander correction and powerline interference reduction in electrocardiogram (ECG) signals using empirical wavelet transform (EWT). During data acquisition of ECG signal, various noise sources such as powerline interference, baseline wander and muscle artifacts contaminate the information bearing ECG signal. For better analysis and interpretation, the ECG signal must be free of noise. In the present work, a new approach is used to filter baseline wander and power line interference from the ECG signal...
December 29, 2016: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28034568/efficacy-and-safety-of-balloon-pulmonary-angioplasty-for-chronic-thromboembolic-pulmonary-hypertension-guided-by-cone-beam-computed-tomography-and-electrocardiogram-gated-area-detector-computed-tomography
#11
Takeshi Ogo, Tetsuya Fukuda, Akihiro Tsuji, Shigefumi Fukui, Jin Ueda, Yoshihiro Sanda, Yoshiaki Morita, Ryotaro Asano, Nao Konagai, Satoshi Yasuda
BACKGROUND: Chronic thromboembolic pulmonary hypertension (CTEPH) is a disease characterized by chronic obstructive thrombus and pulmonary hypertension. Balloon pulmonary angioplasty (BPA), an emerging alternative catheter-based treatment for inoperable patients with CTEPH, has not yet been standardised, especially for lesion assessment in distal pulmonary arteries. Recent advancement in computed tomography enables distal CTEPH lesions to be visualized. METHODS: We retrospectively studied 80 consecutive patients with inoperable CTEPH who received BPA guided by cone-beam computed tomography (CT) (CBCT) or electrocardiogram (ECG)-gated area detector CT (ADCT) for target lesion assessment...
December 21, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/28028495/evaluation-of-a-low-cost-and-low-noise-active-dry-electrode-for-long-term-biopotential-recording
#12
Ali Pourahmad, Amin Mahnam
Wet Ag/AgCl electrodes, although very popular in clinical diagnosis, are not appropriate for expanding applications of wearable biopotential recording systems which are used repetitively and for a long time. Here, the development of a low-cost and low-noise active dry electrode is presented. The performance of the new electrodes was assessed for recording electrocardiogram (ECG) and electroencephalogram (EEG) in comparison with that of typical gel-based electrodes in a series of long-term recording experiments...
October 2016: Journal of Medical Signals and Sensors
https://www.readbyqxmd.com/read/28027906/assessment-of-smith-algorithms-for-the-diagnosis-of-acute-myocardial-infarction-in-the-presence-of-left-bundle-branch-block
#13
Andrea Di Marco, Ignasi Anguera, Marcos Rodríguez, Alessandro Sionis, Antoni Bayes-Genis, Jany Rodríguez, Albert Ariza-Solé, José Carlos Sánchez-Salado, Mario Díaz-Nuila, Mónica Masotti, Roger Villuendas, Paolo Dallaglio, Joan Antoni Gómez-Hospital, Ángel Cequier
INTRODUCTION AND OBJECTIVES: Recently, a new electrocardiography algorithm has shown promising results for the the diagnosis of acute myocardial infarction in the presence of left bundle branch block (LBBB). We aimed to assess these new electrocardiography rules in a cohort of patients referred for primary percutaneous coronary intervention (pPCI). METHODS: Retrospective observational cohort study that included all patients with suspected myocardial infarction and LBBB on the presenting electrocardiogram, referred for pPCI to 4 tertiary hospitals in Barcelona, Spain...
December 24, 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28024657/repeat-the-electrocardiogram
#14
Mazen M Kawji, David Luke Glancy
A 71-year-old diabetic woman with intermittent chest pain and left bundle branch block was admitted to the hospital for further assessment. A repeat electrocardiogram showed new anterior T-wave inversions concordant with the QRS complexes. Thus, she had myocardial ischemia, and coronary arteriography revealed left main and triple vessel coronary disease. She went for urgent coronary artery bypass operation.
December 2, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28024133/ranolazine-in-treatment-of-stable-angina-in-woman-with-atrial-fibrillation-and-intermittent-left-bundle-branch-block-a-case-report
#15
Natalia Yuriivna Osovska, Natalia Vitaliivna Kuzminova
Stable angina is the most frequent manifestation of ischemic heart disease (IHD) in women as compared to men (65% versus 37%). IHD in women has more favorable clinical course because myocardial infarction develops twice as rare as in men. Coronary angiography of angina patients demonstrates normal coronary arteries more frequently in women than in men. Microvascular angina (MVA) is found to be a rather common form of stable IHD as that particular diagnosis is made later in 20-30% of patients who previously underwent coronary angiography...
December 22, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28017302/cardiodynamicsgram-as-a-new-diagnostic-tool-in-coronary-artery-disease-patients-with-nondiagnostic-electrocardiograms
#16
Muqing Deng, Min Tang, Cong Wang, Liang Shan, Linfeng Zhang, Jingtao Zhang, Weiming Wu, Ling Xia
Cardiodynamicsgram (CDG) has emerged recently as a noninvasive spatiotemporal electrocardiographic method for subtle cardiac dynamics information analysis within electrocardiogram (ECG). This study sought to evaluate the clinical utility of CDG for early coronary artery disease (CAD) detection in suspected patients with CAD presenting with nondiagnostic ECGs. A total of 421 suspected patients with CAD presenting with nondiagnostic ECG were enrolled. Standard 12-lead ECG and CDG were performed simultaneously, 1 day before invasive coronary angiography...
December 2, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28013349/pharmacology-and-toxicology-of-the-novel-investigational-agent-cantrixil-trx-e-002-1
#17
REVIEW
Muhammad Wasif Saif, Andrew Heaton, Kimberley Lilischkis, James Garner, David M Brown
PURPOSE: Recurrent, chemo-resistant ovarian cancer is thought to be due to a subgroup of slow-growing, drug-resistant cancer cells with stem-like properties and a high capacity for tumour repair. Cantrixil targets this sub-population of cells and is being developed as an intraperitoneal therapy to be used as first-line therapy in combination with carboplatin for epithelial ovarian cancer. The studies presented here justify further development. METHODS: A GLP dog CV study using a 4 × 4 Latin Square Crossover study was conducted using telemetric ECG recordings from dogs post IP administration to assess for cardiac abnormalities...
December 24, 2016: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28012712/unintended-consequences-of-adjusting-citalopram-prescriptions-following-the-2011-fda-warning
#18
Lauren B Gerlach, Helen C Kales, Donovan T Maust, Claire Chiang, Claire Stano, Hae Mi Choe, Kara Zivin
OBJECTIVES: In 2011, the U.S. Food and Drug Administration (FDA) issued a safety announcement cautioning providers against prescribing citalopram above 40 mg per day given concerns for QT prolongation. We assessed the impact of a health system quality improvement initiative to identify patients taking higher than the recommended dose of citalopram. DESIGN: Retrospective cohort study. SETTING: Nine primary care clinics within the University of Michigan from March 2012 to February 2013...
November 18, 2016: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28012294/derivation-of-respiration-rate-from-ambulatory-ecg-and-ppg-using-ensemble-empirical-mode-decomposition-comparison-and-fusion
#19
Christina Orphanidou
A new method for extracting the respiratory rate from ECG and PPG obtained via wearable sensors is presented. The proposed technique employs Ensemble Empirical Mode Decomposition in order to identify the respiration "mode" from the noise-corrupted Heart Rate Variability/Pulse Rate Variability and Amplitude Modulation signals extracted from ECG and PPG signals. The technique was validated with respect to a Respiratory Impedance Pneumography (RIP) signal using the mean absolute and the average relative errors for a group ambulatory hospital patients...
December 7, 2016: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28011703/optogenetic-termination-of-ventricular-arrhythmias-in-the-whole-heart-towards-biological-cardiac-rhythm-management
#20
Emile C A Nyns, Annemarie Kip, Cindy I Bart, Jaap J Plomp, Katja Zeppenfeld, Martin J Schalij, Antoine A F de Vries, Daniël A Pijnappels
AIMS: Current treatments of ventricular arrhythmias rely on modulation of cardiac electrical function through drugs, ablation or electroshocks, which are all non-biological and rather unspecific, irreversible or traumatizing interventions. Optogenetics, however, is a novel, biological technique allowing electrical modulation in a specific, reversible and trauma-free manner using light-gated ion channels. The aim of our study was to investigate optogenetic termination of ventricular arrhythmias in the whole heart...
December 23, 2016: European Heart Journal
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