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https://www.readbyqxmd.com/read/27909532/ajmaline-challenge-to-unmask-infrahisian-disease-in-patients-with-recurrent-and-unexplained-syncope-preserved-ejection-fraction-with-or-without-conduction-abnormalities-on-surface-ecg
#1
Francesco Pentimalli, Luca Bacino, Matteo Ghione, Giambattista Siri, Massimo Gazzarata, Paolo Bellotti
Background: Pharmacological challenge with class I antiarrhythmic drug is a recommended diagnostic test in patients with unexplained syncope only in the presence of bundle branch block, when non-invasive tests have failed to make the diagnosis. Its role in patients with minor or no conduction disturbances on 12-leads ECG has not been evaluated yet. It is also not clear which are the values of His-Ventricular interval to be considered diagnostic. We sought to evaluate the role of ajmaline challenge in unmasking the presence of an infrahisian disease in patients with recurrent and unexplained syncope, regardless of the existence of conduction disturbances on surface ECG...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27904509/a-new-diagnostic-tool-for-masked-hypertension-impaired-sleep-quality
#2
Fatma Erdem, Ugur Cakır, Osman Yıldırım, Aytekin Alcelik, Ibrahim Donmez, Taha Can Tuman, Sabri Onur Caglar, Alim Erdem, Mehmet Yazıcı
INTRODUCTION: The aim of this study was to evaluate the relationship between masked hypertension and impaired sleep quality. Additionally, we evaluated the diagnostic role and prevalence of poor sleep quality among patients with newly diagnosed masked hypertension. MATERIAL AND METHODS: A total of 112 individuals, 72 patients with newly diagnosed masked hypertension and 40 normotensive healthy volunteers, were included in this study. All patients underwent evaluation comprising 12-lead electrocardiography, transthoracic echocardiography, 24-hour Holter ECG, and basic laboratory tests...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27898406/low-incidence-of-atrial-fibrillation-in-patients-with-transient-ischemic-attack
#3
Kenneth Bruun Pedersen, Alexander Chemnitz, Charlotte Madsen, Niels C F Sandgaard, Søren Bak, Axel Brandes
BACKGROUND: Atrial fibrillation (AF) is a major cause of stroke. Therefore, all patients with ischemic stroke or transient ischemic attack (TIA) should be examined with 12-lead electrocardiogram (ECG) and continuous monitoring to detect AF. Current guidelines recommend at least 24 h continuous ECG monitoring, which is primarily based on studies investigating patients with ischemic stroke. The aim of our study was to investigate the diagnostic yield of 12-lead ECG and Holter monitoring in patients with TIA...
November 30, 2016: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/27890880/myopericarditis-in-a-case-of-anti-signal-recognition-particle-anti-srp-antibody-positive-myopathy
#4
Mariko Tanaka, Naoki Gamou, Hirohiko Shizukawa, Emiko Tsuda, Shun Shimohama
A 79 year-old female was admitted to our hospital because of high serum creatine kinase level together with proximal muscle weakness and pain on grasping. MRI revealed inflammatory changes in femoral muscles on both sides. Muscle biopsy showed size irregularity of muscle cells, and necrosis and regeneration of fibers. Study of antibodies was also consistent with the diagnostic criteria of anti-signal recognition particle (anti-SRP) antibody-positive myopathy. On admission, the patient required pericardiocentesis for the management of exudative pericarditis...
November 25, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27886710/automated-diagnosis-of-coronary-artery-disease-cad-patients-using-optimized-svm
#5
Azam Davari Dolatabadi, Siamak Esmael Zadeh Khadem, Babak Mohammadzadeh Asl
BACKGROUND AND OBJECTIVE: Currently Coronary Artery Disease (CAD) is one of the most prevalent diseases, and also can lead to death, disability and economic loss in patients who suffer from cardiovascular disease. Diagnostic procedures of this disease by medical teams are typically invasive, although they do not satisfy the required accuracy. METHODS: In this study, we have proposed a methodology for the automatic diagnosis of normal and Coronary Artery Disease conditions using Heart Rate Variability (HRV) signal extracted from electrocardiogram (ECG)...
January 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/27879618/the-value-of-detecting-asymptomatic-signs-of-myocardial-ischemia-in-patients-with-coronary-artery-disease-in-outpatient-cardiac-rehabilitation
#6
Patricia Lounsbury, Ahmed S Elokda, Jennifer M Bunning, Ross Arena, Ellen E I Gordon
BACKGROUND: Electrocardiographic (ECG) monitored outpatient cardiac rehabilitation (OP-CR) is routinely performed following a variety of cardiovascular procedures and conditions. OBJECTIVE: The aim of this study is to determine if diagnostic-quality ECG monitoring in patients with coronary artery disease (CAD) during OP-CR is useful in identifying asymptomatic myocardial ischemia, resulting in change(s) in care or medical management. METHODS: A retrospective analysis of ECG monitoring was done on all OP-CR patients diagnosed with CAD (n = 1213) from January 2000 through June 2013...
November 22, 2016: Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/27869101/a-stacked-contractive-denoising-auto-encoder-for-ecg-signal-denoising
#7
Peng Xiong, Hongrui Wang, Ming Liu, Feng Lin, Zengguang Hou, Xiuling Liu
As a primary diagnostic tool for cardiac diseases, electrocardiogram (ECG) signals are often contaminated by various kinds of noise, such as baseline wander, electrode contact noise and motion artifacts. In this paper, we propose a contractive denoising technique to improve the performance of current denoising auto-encoders (DAEs) for ECG signal denoising. Based on the Frobenius norm of the Jacobean matrix for the learned features with respect to the input, we develop a stacked contractive denoising auto-encoder (CDAE) to build a deep neural network (DNN) for noise reduction, which can significantly improve the expression of ECG signals through multi-level feature extraction...
November 21, 2016: Physiological Measurement
https://www.readbyqxmd.com/read/27866020/clinical-manifestation-and-surgical-treatment-analysis-of-five-cases-with-biatrial-myxoma
#8
Dong Liu, Ran Dong
BACKGROUND: Cardiac myxomas (CMs) are a major primary heart tumor which often causes unexpected symptoms or sudden death. Among CMs, biatrial myxomas are even rare. This study was designed to investigate the clinical characteristics and surgical treatment of 5 cases with biatrial myxoma, to summarize the treatment experience and the effect of short-to-mid-term prognosis. METHODS: Five patients with biatrial myxoma were included in this study. The patients' relative literature, chest X-ray, body-surface electrocardiogram, and ultrasonic cardiogram (UCG) were used to investigate the clinical characteristics...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27863892/pericarditis-mimicking-brugada-syndrome-a-case-report
#9
Manuel Monti, Giulia Olivi, Francesca Francavilla, Francesco Borgognoni
INTRODUCTION: Brugada syndrome (BrS) is a genetic heart disorder due to alteration of the ion channels function that causes an impaired in the cardiac conduction system. It is characterized by an abnormal electrocardiogram pattern and may be complicated by malignant ventricular arrhythmias. Pericarditis is an inflammation of the pericardium and 90% of isolated cases of acute pericarditis are idiopathic or viral. Acute pericarditis may appears with chest pain, fever, pericardial friction rub, and cardiac tamponade...
November 9, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27861382/single-injection-protocol-for-coronary-and-lower-extremity-ct-angiographies-in-patients-suspected-for-peripheral-arterial-disease
#10
Ashish Khandelwal, Takeshi Kondo, Makoto Amanuma, Akitsugu Oida, Tomonari Sano, Saboo S Sachin, Shinichi Takase, Frank J Rybicki, Kanako K Kumamaru
To evaluate the feasibility of a single injection protocol for coronary CT angiography (CTA) and lower extremity CTA in patients suspected for peripheral arterial disease (PAD).This prospective observational study included a total of 103 patients who showed an ankle brachial index ≤0.9 and underwent the single injection protocol for coronary and lower extremity CTA. All CTAs used iodinated contrast (weight × 0.06 mL/s × 20 seconds). A prospective Electrocardiogram (ECG)-gated coronary CTA was performed, followed by helical lower extremity CTA beginning 9 seconds after coronary CTA...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27856475/assessment-of-cardiovascular-remodelling-following-endovascular-aortic-repair-through-imaging-and-computation-the-core-prospective-observational-cohort-study-protocol
#11
Foeke J H Nauta, Arnoud V Kamman, El-Sayed H Ibrahim, Prachi P Agarwal, Bo Yang, Karen Kim, David M Williams, Joost A van Herwaarden, Frans L Moll, Kim A Eagle, Santi Trimarchi, Himanshu J Patel, C Alberto Figueroa
INTRODUCTION: Thoracic aortic stent grafts are orders of magnitude stiffer than the native aorta. These devices have been associated with acute hypertension, elevated pulse pressure, cardiac remodelling and reduced coronary perfusion. However, a systematic assessment of such cardiovascular effects of thoracic endovascular aortic repair (TEVAR) is missing. The CardiOvascular Remodelling following Endovascular aortic repair (CORE) study aims to (1) quantify cardiovascular remodelling following TEVAR and compare echocardiography against MRI, the reference method; (2) validate computational modelling of cardiovascular haemodynamics following TEVAR using clinical measurements, and virtually assess the impact of more compliant stent grafts on cardiovascular haemodynamics; and (3) investigate diagnostic accuracy of ECG and serum biomarkers for cardiac remodelling compared to MRI...
November 17, 2016: BMJ Open
https://www.readbyqxmd.com/read/27848163/myocardial-ischemia-detection-with-single-phase-ct-perfusion-in-symptomatic-patients-using-high-pitch-helical-image-acquisition-technique
#12
Bernhard Bischoff, Simon Deseive, Martin Rampp, Andrei Todica, Marc Wermke, Stefan Martinoff, Steffen Massberg, Maximilian F Reiser, Hans-Christoph Becker, Jörg Hausleiter
Coronary CT angiography (CCTA) suffers from a reduced diagnostic accuracy in patients with heavily calcified coronary arteries or prior myocardial revascularisation due to artefacts caused by calcifications and stent material. CT myocardial perfusion imaging (CTMPI) yields high potential for the detection of myocardial ischemia and might help to overcome the above mentioned limitations. We analysed CT single-phase perfusion using high-pitch helical image acquisition technique in patients with prior myocardial revascularisation...
November 15, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27847557/thoracic-ultrasound-a-complementary-diagnostic-tool-in-cardiology
#13
REVIEW
Guglielmo M Trovato
Clinical assessment and workup of patients referred to cardiologists may need an extension to chest disease. This requires more in-depth examination of respiratory co-morbidities due to uncertainty or severity of the clinical presentation. The filter and integration of ecg and echocardiographic information, addressing to the clues of right ventricular impairment, pulmonary embolism and pulmonary hypertension, and other less frequent conditions, such as congenital, inherited and systemic disease, usually allow more timely diagnosis and therapeutic choice...
October 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27847556/remote-electrocardiograph-monitoring-using-a-novel-adhesive-strip-sensor-a-pilot-study
#14
REVIEW
Charles J Bruce, Dorothy J Ladewig, Virend K Somers, Kevin E Bennet, Scott Burrichter, Christopher G Scott, Lyle J Olson, Paul A Friedman
The increase in health care costs is not sustainable and has heightened the need for innovative low cost effective strategies for delivering patient care. Remote monitoring holds great promise for preventing or shortening duration of hospitalization even while improving quality of care. We therefore conducted a proof of concept study to examine the quality of electrocardiograph (ECG) recordings obtained remotely and to test its potential utility in detecting harmful rhythms such as atrial fibrillation. We tested a novel adhesive strip ECG monitor and assessed the ECG quality in ambulatory individuals...
October 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27846815/endomyocardial-biopsy-via-the-femoral-access-still-safe-and-valuable-diagnostic-tool
#15
Sylwia Sławek, Aleksander Araszkiewicz, Agnieszka Gaczkowska, Justyna Koszarska, Damian Celiński, Marek Grygier, Maciej Lesiak, Stefan Grajek
BACKGROUND: The endomyocardial biopsy has proven to be an integral diagnostic tool for surveillance of cardiac allograft rejection and identification of myocardial diseases. Nevertheless, this invasive procedure is not risk-free. This study focuses on the risk of complications and diagnostic performance of right ventricular endomyocardial biopsy (EMB). METHODS: In this single-center retrospective study, we analyzed 315 EMB procedures performed between July 2008 and May 2015 in 73 patients...
November 15, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27844195/-event-recorder-in-cryptogenic-stroke-accepted-and-feasible-indications
#16
J Brachmann, M Held
It was proven in multiple studies that about 30 % of cryptogenic strokes are related to clinically silent atrial fibrillation (AF). There is an opportunity for prolonged ECG monitoring mainly through an implanted event recorder after completion of conventional diagnostic methods in an unidentified stroke source. The Crystal AF study has proven, together with other results, improved AF detection through prolonged monitoring for up to 36 months. An implanted event recorder for 2-3 years is suitable for this particular purpose...
November 14, 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27836168/the-olson-method-for-detection-of-acute-myocardial-ischemia-in-patients-with-coronary-occlusion
#17
Thomas Lindow, Charles W Olson, Cees A Swenne, Sumche Man, Olle Pahlm
: An automated ECG-based method may provide diagnostic support in the management of patients with acute coronary syndrome. The Olson method has previously proved to accurately identify the culprit artery in patients with acute coronary occlusion. METHODS: The Olson method was applied to 360 patients without acute myocardial ischemia and 52 patients with acute coronary occlusion. RESULTS: This study establishes the normal variation of the Olson wall scores in patients without acute myocardial ischemia, which provides the basis for implementation of the Olson method for triage of patients with acute coronary syndrome...
October 19, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27834661/an-extended-bayesian-framework-for-atrial-and-ventricular-activity-separation-in-atrial-fibrillation
#18
Ebadollah Kheirati Roonizi, Roberto Sassi
An extended nonlinear Bayesian filtering framework is introduced for the analysis of Atrial Fibrillation (AF), in particular with single channel electrocardiographical (ECG) recordings. It is suitable for simultaneously tracking the fundamental frequency of atrial fibrillatory waves (f-waves), and separating signals, linked to atrial and ventricular activity, during AF. In this framework, high-power ECG components, i.e. Q, R, S and T waves, are modeled using sum of Gaussian functions. The atrial activity dynamical model is instead based on a trigonometrical function, with a fundamental frequency (the inverse of the dominant atrial cycle length), and its harmonics...
November 4, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27830522/accuracy-of-ecg-indices-for-diagnosis-of-left-ventricular-hypertrophy-in-people-65%C3%A2-years-results-from-the-actife-study
#19
Roman Laszlo, Katia Kunz, Dhayana Dallmeier, Jochen Klenk, Michael Denkinger, Wolfgang Koenig, Dietrich Rothenbacher, Juergen Michael Steinacker
BACKGROUND: The detection of left ventricular hypertrophy (LVH) is still a common objective of electrocardiography (ECG) in clinical practice. AIMS: The aim of our study was to evaluate the accuracy of LVH ECG indices in people older than 65 recruited from a population-based cohort (ActiFE-Ulm study). METHODS: In 432 subjects (mean age 76.2 ± 5.5 years, 51% male), left ventricular mass was echocardiographically determined (Devereux formula) and indexed (LVMI) to body surface area...
November 9, 2016: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/27826247/modulations-of-heart-rate-ecg-and-cardio-respiratory-coupling-observed-in-polysomnography
#20
REVIEW
Thomas Penzel, Jan W Kantelhardt, Ronny P Bartsch, Maik Riedl, Jan F Kraemer, Niels Wessel, Carmen Garcia, Martin Glos, Ingo Fietze, Christoph Schöbel
The cardiac component of cardio-respiratory polysomnography is covered by ECG and heart rate recordings. However, their evaluation is often underrepresented in summarizing reports. As complements to EEG, EOG, and EMG, these signals provide diagnostic information for autonomic nervous activity during sleep. This review presents major methodological developments in sleep research regarding heart rate, ECG, and cardio-respiratory couplings in a chronological (historical) sequence. It presents physiological and pathophysiological insights related to sleep medicine obtained by new technical developments...
2016: Frontiers in Physiology
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