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Electrocardiography

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https://www.readbyqxmd.com/read/28929619/assessment-of-subclinical-right-ventricular-systolic-dysfunction-in-coal-miners-using-myocardial-isovolumic-acceleration
#1
Ozge Ozcan Abacıoglu, Mehmet Kaplan, Serkan Abacıoglu, Ala Quisi
OBJECTIVE: Several studies have been conducted regarding the effects of coal mining on the respiratory system. However, there is a lack of data concerning potential effects of coal mining on the cardiovascular system. In this study, we aimed to evaluate the potential subclinical right and left ventricular dysfunction in coal miners. METHODS: This single-center, prospective study included a total of 102 patients. Patient and control groups consisted of 54 coal miners and 48 healthy men, respectively...
September 2017: Echocardiography
https://www.readbyqxmd.com/read/28928046/new-directions-for-ambulatory-monitoring-following-2017-hrs-ishne-expert-consensus
#2
Emanuela T Locati
The main role of ambulatory electrocardiography (AECG) in clinical practice is to detect and characterize the behavior of cardiac electrical activity during ordinary daily life activities. Because certain rhythm abnormalities may be infrequent and paroxysmal, and may occur only during sleep or in association with mental, emotional, or exercise-induced perturbation in cardiac function, AECG needs to be recorded over a long period of time, originally lasting 24h and now expanding up to several weeks and even to months...
August 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28927724/empirical-evidence-for-the-relationship-between-cognitive-workload-and-attentional-reserve
#3
Kyle J Jaquess, Rodolphe J Gentili, Li-Chuan Lo, Hyuk Oh, Jing Zhang, Jeremy C Rietschel, Matthew W Miller, Ying Ying Tan, Bradley D Hatfield
While the concepts of cognitive workload and attentional reserve have been thought to have an inverse relationship for some time, such a relationship has never been empirically tested. This was the purpose of the present study. Aspects of the electroencephalogram were used to assess both cognitive workload and attentional reserve. Specifically, spectral measures of cortical activation were used to assess cognitive workload, while amplitudes of the event-related potential from the presentation of unattended "novel" sounds were used to assess attentional reserve...
September 16, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28926474/parasympathetic-activation-enhanced-by-slow-respiration-modulates-early-auditory-sensory-gating
#4
Atsushi Aoyama, Yu Shimura, Takao Ohmuta, Yohei Nomoto, Masashi Kawasumi
Sensory gating is a preattentional mechanism to filter irrelevant information from the environment. It is typically reflected as a suppression of the event-related P50 component for successive sounds in the auditory modality. Although stress-induced sympathetic activation has been reported to disrupt P50 suppression, little is known about the modulatory effect of parasympathetic activation on early auditory sensory gating. We determined the parasympathetic effect on the magnetic P50 (P50m) suppression by controlling the respiratory rhythm and recording data simultaneously with magnetoencephalography and electrocardiography, using three successive click sounds as stimulus and ten normal individuals as study participants...
September 18, 2017: Neuroreport
https://www.readbyqxmd.com/read/28925655/pleuritic-chest-pain-sorting-through-the-differential-diagnosis
#5
Brian V Reamy, Pamela M Williams, Michael Ryan Odom
Pleuritic chest pain is characterized by sudden and intense sharp, stabbing, or burning pain in the chest when inhaling and exhaling. Pulmonary embolism is the most common serious cause, found in 5% to 21% of patients who present to an emergency department with pleuritic chest pain. A validated clinical decision rule for pulmonary embolism should be employed to guide the use of additional tests such as d-dimer assays, ventilation-perfusion scans, or computed tomography angiography. Myocardial infarction, pericarditis, aortic dissection, pneumonia, and pneumothorax are other serious causes that should be ruled out using history and physical examination, electrocardiography, troponin assays, and chest radiography before another diagnosis is made...
September 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28924484/diabetic-ketoacidosis-producing-extreme-hyperkalemia-in-a-patient-with-type-1-diabetes-on-hemodialysis
#6
Hodaka Yamada, Shunsuke Funazaki, Masafumi Kakei, Kazuo Hara, San-E Ishikawa
Diabetic ketoacidosis (DKA) is a critical complication of type 1 diabetes associated with water and electrolyte disorders. Here, we report a case of DKA with extreme hyperkalemia (9.0 mEq/L) in a patient with type 1 diabetes on hemodialysis. He had a left frontal cerebral infarction resulting in inability to manage his continuous subcutaneous insulin infusion pump. Electrocardiography showed typical changes of hyperkalemia, including absent P waves, prolonged QRS interval and tented T waves. There was no evidence of total body water deficit...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28918881/clinical-detection-of-hemodynamically-significant-isolated-secundum-atrial-septal-defect
#7
Robert L Geggel
The diagnosis of secundum atrial septal defect often is delayed. For 310 patients with hemodynamically significant secundum atrial septal defect undergoing closure over a 5-year period at a single medical center, this study reviews the symptoms prompting referral, limitations of physical examination and electrocardiography, and basis for initially missing the diagnosis.
September 14, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28912727/a-hybrid-emd-kurtosis-method-for-estimating-fetal-heart-rate-from-continuous-doppler-signals
#8
Haitham M Al-Angari, Yoshitaka Kimura, Leontios J Hadjileontiadis, Ahsan H Khandoker
Monitoring of fetal heart rate (FHR) is an important measure of fetal wellbeing during the months of pregnancy. Previous works on estimating FHR variability from Doppler ultrasound (DUS) signal mainly through autocorrelation analysis showed low accuracy when compared with heart rate variability (HRV) computed from fetal electrocardiography (fECG). In this work, we proposed a method based on empirical mode decomposition (EMD) and the kurtosis statistics to estimate FHR and its variability from DUS. Comparison between estimated beat-to-beat intervals using the proposed method and the autocorrelation function (AF) with respect to RR intervals computed from fECG as the ground truth was done on DUS signals from 44 pregnant mothers in the early (20 cases) and late (24 cases) gestational weeks...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28912075/ventricular-repolarization-disturbances-after-high-dose-intravenous-methylprednisolone-theraphy
#9
Gokhan Altunbas, Murat Sucu, Orhan Zengin
OBJECTIVE: There are no randomized trials evaluating the effects of pulse steroid treatment on cardiac electrophysiologic functions. The data are limited only to case series. In this study, we sought to evaluate the effects of high dose intravenous methylprednisolone therapy on indices of ventricular repolarization. METHODS: Fifty patients with various autoimmune and inflammatory disorders were enrolled to the study. Electrocardiography (ECG) was obtained 4h before and 12h after the pulse steroid treatment...
August 1, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28900621/using-a-cloud-computing-system-to-reduce-door-to-balloon-time-in-acute-st-elevation-myocardial-infarction-patients-transferred-for-percutaneous-coronary-intervention
#10
Chi-Kung Ho, Fu-Cheng Chen, Yung-Lung Chen, Hui-Ting Wang, Chien-Ho Lee, Wen-Jung Chung, Cheng-Jui Lin, Shu-Kai Hsueh, Shin-Chiang Hung, Kuan-Han Wu, Chu-Feng Liu, Chia-Te Kung, Cheng-I Cheng
BACKGROUND: This study evaluated the impact on clinical outcomes using a cloud computing system to reduce percutaneous coronary intervention hospital door-to-balloon (DTB) time for ST segment elevation myocardial infarction (STEMI). METHODS: A total of 369 patients before and after implementation of the transfer protocol were enrolled. Of these patients, 262 were transferred through protocol while the other 107 patients were transferred through the traditional referral process...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28889147/acute-coronary-syndrome-risk-prediction-of-rapid-emergency-medicine-scoring-system-in-acute-chest-pain-an-observational-study-of-patients-presenting-with-chest-pain-in-the-emergency-department-in-central-saudi-arabia
#11
Tahir Mehmood, Mohammad S Al Shehrani, Muhammad Ahmad
To assess the diagnostic validity of the rapid emergency medical score (REMS) for the risk stratification of acute coronary syndrome (ACS) from non-cardiogenic chest pain. Methods: An observational cross-sectional study was carried out among patients presenting with chest pain to the Emergency Department of Prince Sultan Military Medical City, Riyadh, Kingdom of Saudi Arabia, for 6 months from January to June 2016. All patients, included through non-probability convenience sampling, were assessed using standard protocols for the physiological parameters of the REMS, and ACS was confirmed through electrocardiography, cardiac enzyme testing, and angiography (if needed)...
September 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28886993/smoking-and-risk-of-atrial-fibrillation-in-the-reasons-for-geographic-and-racial-differences-in-stroke-regards-study
#12
Muhammad Imtiaz Ahmad, Candice D Mosley, Wesley T O'Neal, Suzanne E Judd, Leslie A McClure, Virginia J Howard, George Howard, Elsayed Z Soliman
BACKGROUND: Whether smoking increases the risk of atrial fibrillation (AF) remains debatable due to inconsistent reports. METHODS: We examined the association between smoking and incident AF in 11,047 participants from the REasons for Geographic And Racial Differences in Stroke (REGARDS) Study, one of the largest biracial, population-based cohort studies in the USA. Baseline (2003-2007) cigarette smoking status and amount (pack-years) were self-reported. Incident AF was determined by electrocardiography and history of a prior physician diagnosis at a follow-up examination conducted after a median of 10...
September 5, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28886775/the-history-of-electrocardiography
#13
EDITORIAL
Berndt Lüderitz, Antoni Bayés de Luna
No abstract text is available yet for this article.
September 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28886530/a-novel-ventricular-restraint-device-asd-repetitively-deliver-salvia-miltiorrhiza-to-epicardium-have-good-curative-effects-in-heart-failure-management
#14
Muhammad Naveed, Li Wenhua, Wang Gang, Imran Shair Mohammad, Muhammad Abbas, Xiaoqian Liao, Mengqi Yang, Li Zhang, Xiaolin Liu, Xiaoming Qi, Yineng Chen, Lv Jiadi, Linlan Ye, Wang Zhijie, Chen Ding Ding, Yu Feng, Zhou Xiaohui
A novel ventricular restraint is the non-transplant surgical option for the management of an end-stage dilated heart failure (HF). To expand the therapeutic techniques we design a novel ventricular restraint device (ASD) which has the ability to deliver a therapeutic drug directly to the heart. We deliver a Traditional Chinese Medicine (TCM) Salvia miltiorrhiza (Danshen Zhusheye) through active hydraulic ventricular support drug delivery system (ASD) and we hypothesize that it will show better results in HF management than the restraint device and drug alone...
September 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28884653/smartphone-electrographic-monitoring-for-atrial-fibrillation-in-acute-ischemic-stroke-and-transient-ischemic-attack
#15
Hans T Tu, Ziyuan Chen, Corey Swift, Leonid Churilov, Ruibing Guo, Xinfeng Liu, Jim Jannes, Vincent Mok, Ben Freedman, Stephen M Davis, Bernard Yan
Rationale Paroxysmal atrial fibrillation is a common and preventable cause of devastating strokes. However, currently available monitoring methods, including Holter monitoring, cardiac telemetry and event loop recorders, have drawbacks that restrict their application in the general stroke population. AliveCor™ heart monitor, a novel device that embeds miniaturized electrocardiography (ECG) in a smartphone case coupled with an application to record and diagnose the ECG, has recently been shown to provide an accurate and sensitive single lead ECG diagnosis of atrial fibrillation...
October 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28884631/takotsubo-cardiomyopathy-associated-with-paragonimiasis-westermani
#16
Ryouhei Matsuoka, Jun Muneuchi, Yusaku Nagatomo, Daisuke Shimizu, Seigo Okada, Chiaki Iida, Hiromitsu Shirouzu, Mamie Watanabe, Yasuhiko Takahashi, Haruhiko Maruyama
An 11-year-old boy collapsed during morning assembly at his junior high school. The automated external defibrillator detected ventricular fibrillation and provided shock delivery. He was successfully resuscitated and reverted to sinus rhythm. Electrocardiography showed ST-T elevation in the precordial leads. Echocardiography and angiography demonstrated akinesia of the apex and mid-wall of the left ventricle with preserved contraction of the basal segments, which suggested Takotsubo cardiomyopathy. The patient and his family had often eaten uncooked crab, and his father had a past history of infection with Paragonimiasis westermani...
September 8, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28880843/a-novel-dual-gating-approach-using-joint-inertial-sensors-implications-for-cardiac-pet-imaging
#17
Mojtaba Jafari Tadi, Jarmo Teuho, Eero Lennart Lehtonen, Antti Saraste, Mikko Pänkäälä, Tero Koivisto, Mika Teras
Positron emission tomography (PET) is a non-invasive imaging technique which may be considered as the state of art for the examination of cardiac inflammation due to atherosclerosis. A fundamental limitation of PET is that cardiac and respiratory motions reduce the quality of the achieved images. Current approaches for motion compensation involve gating the PET data based on the timing of quiescent periods of cardiac and respiratory cycles. In this study, we present a novel gating method called microelectromechanical (MEMS) dual gating which relies on joint non-electrical sensors, i...
September 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28878848/quantification-of-contraction-synchronicity-and-contraction-work-in-coronary-artery-disease
#18
Takanaga Niimi, Mamoru Nanasato, Hisatoshi Maeda
PURPOSE: This study quantified the contraction synchronicity (CS; with 100% representing full synchrony and -100% dyssynchrony) and contraction work (CW, millijoules per centimeter squared; representing myocardial area) in patients with reduced left ventricular ejection fraction (LVEF) associated with coronary artery disease (CAD). METHODS: CS, CW and LVEF in 104 subjects (54 CAD patients and 50 control subjects without CAD) were measured using rest electrocardiography-gated single-photon emission computed tomography (ECG SPECT)...
September 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28871319/onset-ages-of-hepatopulmonary-syndrome-and-pulmonary-hypertension-in-patients-with-biliary-atresia
#19
Takehisa Ueno, Ryuta Saka, Yuichi Takama, Hiroaki Yamanaka, Yuko Tazuke, Kazuhiko Bessho, Hiroomi Okuyama
PURPOSE: Hepatopulmonary syndrome (HPS) and portopulmonary hypertension (PoPH) are extrahepatic complications of biliary atresia (BA). Their detection is sometimes delayed, which may result in missed opportunities for liver transplantation. The aim of this study was to determine the onset ages of HPS and PoPH in BA patients. METHODS: BA patients followed at our institution were identified. Patients visited our clinic for routine blood work, as well as regular electrocardiography, chest X-rays, and arterial blood gas tests...
September 4, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28870377/cardiac-imaging-in-the-diagnosis-of-coronary-artery-disease
#20
Ashvarya Mangla, Estefania Oliveros, Kim Allan Williams, Dinesh K Kalra
Coronary artery disease (CAD) continues to be a leading cause of morbidity and mortality worldwide. Although invasive coronary angiography has previously been the gold standard in establishing the diagnosis of CAD, there is a growing shift to more appropriately use the cardiac catheterization laboratory to perform interventional procedures once a diagnosis of CAD has been established by noninvasive imaging modalities rather than using it primarily as a diagnostic facility to confirm or refute CAD. With ongoing technological advancements, noninvasive imaging plays a pre-eminent role in not only diagnosing CAD but also informing the choice of appropriate therapies, establishing prognosis, all while containing costs and providing value-based care...
October 2017: Current Problems in Cardiology
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