keyword
MENU ▼
Read by QxMD icon Read
search

Diagnostic ECG

keyword
https://www.readbyqxmd.com/read/28819329/efficient-computation-of-electrograms-and-ecgs-in-human-whole-heart-simulations-using-a-reaction-eikonal-model
#1
Aurel Neic, Fernando O Campos, Anton J Prassl, Steven A Niederer, Martin J Bishop, Edward J Vigmond, Gernot Plank
Anatomically accurate and biophysically detailed bidomain models of the human heart have proven a powerful tool for gaining quantitative insight into the links between electrical sources in the myocardium and the concomitant current flow in the surrounding medium as they represent their relationship mechanistically based on first principles. Such models are increasingly considered as a clinical research tool with the perspective of being used, ultimately, as a complementary diagnostic modality. An important prerequisite in many clinical modeling applications is the ability of models to faithfully replicate potential maps and electrograms recorded from a given patient...
October 1, 2017: Journal of Computational Physics
https://www.readbyqxmd.com/read/28809834/quantifying-infra-slow-dynamics-of-spectral-power-and-heart-rate-in-sleeping-mice
#2
Laura M J Fernandez, Sandro Lecci, Romain Cardis, Gil Vantomme, Elidie Béard, Anita Lüthi
Three vigilance states dominate mammalian life: wakefulness, non-rapid eye movement (non-REM) sleep, and REM sleep. As more neural correlates of behavior are identified in freely moving animals, this three-fold subdivision becomes too simplistic. During wakefulness, ensembles of global and local cortical activities, together with peripheral parameters such as pupillary diameter and sympathovagal balance, define various degrees of arousal. It remains unclear the extent to which sleep also forms a continuum of brain states-within which the degree of resilience to sensory stimuli and arousability, and perhaps other sleep functions, vary gradually-and how peripheral physiological states co-vary...
August 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28808091/inter-rater-reliability-and-downstream-financial-implications-of-electrocardiography-screening-in-young-athletes
#3
Harshil Dhutia, Aneil Malhotra, Tee Joo Yeo, Irina Chis Ster, Vincent Gabus, Alexandros Steriotis, Helder Dores, Greg Mellor, Carmen García-Corrales, Bode Ensam, Viknesh Jayalapan, Vivienne Anne Ezzat, Gherardo Finocchiaro, Sabiha Gati, Michael Papadakis, Maria Tome-Esteban, Sanjay Sharma
BACKGROUND: Preparticipation screening for cardiovascular disease in young athletes with electrocardiography is endorsed by the European Society of Cardiology and several major sporting organizations. One of the concerns of the ECG as a screening test in young athletes relates to the potential for variation in interpretation. We investigated the degree of variation in ECG interpretation in athletes and its financial impact among cardiologists of differing experience. METHODS AND RESULTS: Eight cardiologists (4 with experience in screening athletes) each reported 400 ECGs of consecutively screened young athletes according to the 2010 European Society of Cardiology recommendations, Seattle criteria, and refined criteria...
August 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28800546/mr-based-respiratory-and-cardiac-motion-correction-for-pet-imaging
#4
Thomas Küstner, Martin Schwartz, Petros Martirosian, Sergios Gatidis, Ferdinand Seith, Christopher Gilliam, Thierry Blu, Hadi Fayad, Dimitris Visvikis, F Schick, B Yang, H Schmidt, N F Schwenzer
PURPOSE: To develop a motion correction for Positron-Emission-Tomography (PET) using simultaneously acquired magnetic-resonance (MR) images within 90 s. METHODS: A 90 s MR acquisition allows the generation of a cardiac and respiratory motion model of the body trunk. Thereafter, further diagnostic MR sequences can be recorded during the PET examination without any limitation. To provide full PET scan time coverage, a sensor fusion approach maps external motion signals (respiratory belt, ECG-derived respiration signal) to a complete surrogate signal on which the retrospective data binning is performed...
August 3, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28791852/cardiac-tumors-in-children-a-20-year-review-of-clinical-presentation-diagnostics-and-treatment
#5
Joanna Kwiatkowska, Anna Wałdoch, Jarosław Meyer-Szary, Piotr Potaż, Marek Grzybiak
BACKGROUND: The use of new imaging techniques has contributed significantly to earlier diagnosis and treatment of cardiac tumors. OBJECTIVES: The aim of the study was to analyze data from children with cardiac tumors in terms of clinical presentation, the role of noninvasive diagnostic procedures and the long-term outcome. MATERIAL AND METHODS: The data analyzed retrospectively concerned 30 children in whom cardiac tumors were diagnosed from January 1995 to July 2015...
March 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28789616/models-for-improved-diagnosis-of-left-ventricular-hypertrophy-based-on-conventional-electrocardiographic-criteria
#6
Nan Lu, Jin-Xiu Zhu, Pei-Xuan Yang, Xue-Rui Tan
BACKGROUND: Electrocardiogram (ECG) is commonly used clinically due to convenience, but its accuracy is insufficient for left ventricular hypertrophy (LVH) diagnosis. In this study, we attempted to improve diagnostic accuracy of LVH by establishing models with ECG parameters. METHODS: Eighty hundred and twenty eight patients were recruited in the present study which were divided into groups according to gender, age and body mass index (BMI). The sensitivity, specificity, Youden index, positive predictive value, negative predictive value and accuracy were calculated using ultrasonic cardiogram criteria of LVH as the gold standard...
August 8, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28777849/-analysis-of-genotype-and-phenotype-correlation-of-myh7-v878a-mutation-among-ethnic-han-chinese-pedigrees-affected-with-hypertrophic-cardiomyopathy
#7
Bo Wang, Ruiqi Guo, Lei Zuo, Hong Shao, Ying Liu, Yu Wang, Yan Ju, Chao Sun, Lifeng Wang, Yanmin Zhang, Liwen Liu
OBJECTIVE: To analyze the phenotype-genotype correlation of MYH7-V878A mutation. METHODS: Exonic amplification and high-throughput sequencing of 96-cardiovascular disease-related genes were carried out on probands from 210 pedigrees affected with hypertrophic cardiomyopathy (HCM). For the probands, their family members, and 300 healthy volunteers, the identified MYH7-V878A mutation was verified by Sanger sequencing. Information of the HCM patients and their family members, including clinical data, physical examination, echocardiography (UCG), electrocardiography (ECG), and conserved sequence of the mutation among various species were analyzed...
August 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28775185/frequency-of-exercise-induced-st-t-segment-deviations-and-cardiac-arrhythmias-in-recreational-endurance-athletes-during-a-marathon-race-results-of-the-prospective-observational-berlin-beat-of-running-study
#8
Juliane Herm, Agnieszka Töpper, Alexander Wutzler, Claudia Kunze, Matthias Krüll, Lars Brechtel, Jürgen Lock, Jochen B Fiebach, Peter U Heuschmann, Wilhelm Haverkamp, Matthias Endres, Gerhard Jan Jungehulsing, Karl Georg Haeusler
OBJECTIVES: While regular physical exercise has many health benefits, strenuous physical exercise may have a negative impact on cardiac function. The 'Berlin Beat of Running' study focused on feasibility and diagnostic value of continuous ECG monitoring in recreational endurance athletes during a marathon race. We hypothesised that cardiac arrhythmias and especially atrial fibrillation are frequently found in a cohort of recreational endurance athletes. The main secondary hypothesis was that pathological laboratory findings in these athletes are (in part) associated with cardiac arrhythmias...
August 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/28765984/-acute-chest-pain
#9
REVIEW
M Möckel, T Störk
Patients presenting with acute chest pain are a challenge for attending physicians in private practice and specialists for emergency and acute medicine in hospitals because a wide spectrum of diagnoses may be the cause, ranging from acute myocardial infarction (AMI) to harmless muscular tension. The evaluation of patients with acute chest pain follows basic principles independent of the setting: A thorough clinical investigation by the responsible physician including medical history and physical examination, followed by a 12-channel electrocardiogram (ECG) and further focused diagnostics...
August 1, 2017: Der Internist
https://www.readbyqxmd.com/read/28764236/clinical-significance-of-the-forsaken-avr-in-evaluation-of-tachyarrhythmias-a-reminder
#10
Dharmendra Jain, Pradeep Nigam, Manoj Indurkar, Riyas Chiramkara
INTRODUCTION: Mechanism of a regular, monomorphic Wide QRS Complex Tachycardia (WCT) is an important diagnostic challenge in day to day practice for the clinicians and affects further management and prognosis. Many of the WCT and Narrow Complex Tachycardia (NCT) produce certain characteristic changes in lead aVR by which we can differentiate between them. AIM: The present study was aimed to evaluate tachyarrhythmias in relation to lead aVR and to highlight the clinical significance of lead aVR, "The Neglected Lead"...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28764222/evaluation-of-myocardial-injury-using-standard-diagnostic-tools-and-tissue-doppler-imaging-in-blunt-trauma-chest
#11
Parshotam Lal Gautam, Neeru Luthra, Manpreet Kaur, Jaspal Singh, Gurpreet Singh Wander, Rohit Tandon, Namrata, Nikhil Gautam
INTRODUCTION: Myocardial contusion is an entity in chest trauma which is difficult to diagnose. Current practice relies more on cardiac-specific biochemical markers and standard echocardiography, but no gold standard test exists. The application of Tissue Doppler imaging is yet unexplored. AIM: The present study was designed to evaluate cardiac injury in patients with blunt trauma chest using conventional trans-thoracic echocardiography parameters and Tissue Doppler imaging...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28762928/-eosinophilic-necrotizing-myocarditis-complicated-by-myocardial-rupture
#12
O Yu Karpova, R Yu Monovtsov, L I Dvoretsky, G R Cherepantsev, A V Magnitskiy
In this female patient eosinophilic myocarditis was complicated by myocardial rupture and hemopericardium with cardiac tamponade. Special features of this case were old age of the patient, fulminant course of the disease, myocardial infarction-like ECG changes, absence of peripheral blood eosinophilia. Presentation is accompanied by discussion of issues of epidemiology, clinical course, diagnostics, and possible causes of eosinophilic myocarditis.
May 2017: Kardiologiia
https://www.readbyqxmd.com/read/28761966/-cave-a-checklist-system-for-preoperative-risk-evaluation-guideline-conform-cardiopulmonary-diagnostics-before-general-and-visceral-surgical-interventions
#13
W Schwenk, P C Hoffmann
BACKGROUND: Preoperative evaluation of patient risk is an essential component of patient preparation before surgery. Guidelines provide evidence-based algorithms for preoperative assessment of cardiac risk; however, even experienced physicians correctly apply evidence-based algorithms in only 50% of all cases or less. OBJECTIVE: A checklist system for guideline-based cardiopulmonary risk evaluation in adult patients undergoing abdominal or visceral surgery (CAVE checklists) was created to assist in preoperative cardiopulmonary risk assessment and increase correct application of evidence-based algorithms before elective visceral surgery...
July 31, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28748840/cardiovascular-involvement-in-severe-malaria-a-prospective-study-in-ranchi-jharkhand
#14
Hemant Narayan Ray, Darshit Doshi, Appu Rajan, Amit K Singh, S B Singh, M K Das
BACKGROUND & OBJECTIVES: Malaria is considered as the most important parasitic disease of humans, causing seri- ous illness that can be fatal, if not diagnosed and treated immediately. It is a multisystem disorder affecting nearly every system of the body. The aim of the present study was to evaluate the involvement of cardiovascular system in severe malaria using non-invasive methods. METHODS: This prospective study was conducted on patients of severe malaria who were admitted between June and November 2015 in the Department of Medicine, Rajendra Institute of Medical Sciences and Hospital, Ranchi, Jharkhand, India...
April 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28747939/diagnostic-utility-of-biomarkers-of-left-ventricular-stress-in-patients-with-aortic-stenosis-and-preserved-left-ventricular-ejection-fraction
#15
Sebastian Sobczak, Agata Sakowicz, Tadeusz Pietrucha, Malgorzata Lelonek
INTRODUCTION: Aortic stenosis (AS) is the most common acquired valvular heart disease. The early identification of patients with severe AS is crucial. NT-proBNP is a well-known biomarker of pressure overload, and its role in patients with AS has been demonstrated in previous studies. Another, less well-known biomarker of pressure overload is sST2 protein, and its role in AS is unclear. AIM: To evaluate the utility of sST2 protein, NT-proBNP and selected clinical parameters in the assessment of degenerative AS severity in a population with preserved left ventricular ejection fraction (LVEF)...
June 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28742643/sensitive-troponin-i-and-stress-testing-in-the-emergency-department-for-the-early-management-of-chest-pain-using-2-hour-protocol
#16
Shahriar Dadkhah, Zakaria Almuwaqqat, Samian Sulaiman, Husein Husein, Quang Nguyen, Saad Ali, Tuncay Taskesen
BACKGROUND: Despite improvements in identifying high-risk patients with non-ST segment ACS (acute coronary syndrome), low risk patients presenting with atypical chest pain and non-diagnostic Electrocardiogram (ECG) continued to undergo unnecessary admissions and testing. Since 1992, our chest pain protocol included using 4-hour serial biomarkers from ED admission in combination with stress testing to evaluate these patients. Our study aimed at determining whether a new accelerated diagnostic protocol using sensitive cardiac troponin I (cTnI) 2 hours after admission to the ED followed by stress testing is safe and effective in emergency settings, allowing for appropriate triage, earlier discharge and reducing costs...
September 2017: Critical Pathways in Cardiology
https://www.readbyqxmd.com/read/28731617/in-vivo-diagnosis-of-early-stage-gastric-cancer-found-after-helicobacter-pylori-eradication-using-probe-based-confocal-laser-endomicroscopy
#17
Noriyuki Horiguchi, Tomomitsu Tahara, T Hyuga Yamada, Dai Yoshida, Masaaki Okubo, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Tetsuya Tsukamoto, Makoto Kuroda, Naoki Ohmiya
BACKGROUND AND AIM: Early-stage gastric cancer (EGC) found after Helicobacter pylori (Hp) eradication often displays non-tumorous regenerative epithelium and/or maturated tumorous epithelium overlying the cancerous tissue, which may confuse endoscopic and histologic diagnosis. Probe-based confocal laser endomicroscopy (pCLE) enables in vivo real-time optical biopsy. We compared the diagnostic yields for these EGC cases using conventional white light endoscopy (WL), magnifying endoscopy with narrow-band imaging (ME-NBI), pCLE, and endoscopic biopsy; we also compared the accuracy of the horizontal extent diagnosis between ME-NBI and pCLE...
July 21, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28703104/high-pitch-dual-source-ct-angiography-without-ecg-gating-for-imaging-the-whole-aorta-intraindividual-comparison-with-standard-pitch-single-source-technique-without-ecg-gating
#18
Carmelinda Manna, Mario Silva, Rocco Cobelli, Sara Poggesi, Cristina Rossi, Nicola Sverzellati
PURPOSE: We aimed to perform intraindividual comparison of computed tomography (CT) parameters, image quality, and radiation exposure between standard CT angiography (CTA) and high-pitch dual source (DS)-CTA, in subjects undergoing serial CTA of thoracoabdominal aorta. METHODS: Eighteen subjects with thoracoabdominal CTA by standard technique and high-pitch DS-CTA technique within 6 months of each other were retrieved for intraindividual comparison of image quality in thoracic and abdominal aorta...
July 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28701316/diagnostic-performance-of-high-sensitivity-compared-with-contemporary-cardiac-troponin-i-for-the-diagnosis-of-acute-myocardial-infarction
#19
Yader Sandoval, Stephen W Smith, Sarah E Thordsen, Charles A Bruen, Michelle D Carlson, Kenneth W Dodd, Brian E Driver, Katherine Jacoby, Benjamin K Johnson, Sara A Love, Johanna C Moore, Anne Sexter, Karen Schulz, Nathaniel L Scott, Jennifer Nicholson, Fred S Apple
BACKGROUND: We examined the diagnostic performance of high-sensitivity cardiac troponin I (hs-cTnI) vs contemporary cTnI with use of the 99th percentile alone and with a normal electrocardiogram (ECG) to rule out acute myocardial infarction (MI) and serial changes (deltas) to rule in MI. METHODS: We included consecutive patients presenting to a US emergency department with serial cTnI on clinical indication (NCT02060760). Diagnostic performance for acute MI, including MI subtypes, and 30-day outcomes were examined...
July 12, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28689328/image-quality-of-coronary-arteries-on-non-electrocardiography-gated-high-pitch-dual-source-computed-tomography-in-children-with-congenital-heart-disease
#20
Yuichiro Kanie, Shuhei Sato, Akihiro Tada, Susumu Kanazawa
This study aimed to evaluate image quality of coronary artery imaging on non-electrocardiography (ECG)-gated high-pitch dual-source computed tomography (DSCT) in children with congenital heart disease (CHD) and to assess factors affecting image quality. We retrospectively reviewed the records of 142 children with CHD who underwent non-ECG-gated high-pitch DSCT. The subjective image quality of the proximal coronary segments was graded using a five-point scale. A score <3 represented a non-diagnostic image...
July 8, 2017: Pediatric Cardiology
keyword
keyword
85503
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"