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ECG interpretation

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https://www.readbyqxmd.com/read/27920449/a-comparison-of-the-european-society-of-cardiology-the-seattle-and-the-refined-criteria-for-interpreting-the-athlete-s-ecg-in-a-pre-participation-screening-programme
#1
https://www.readbyqxmd.com/read/27917921/exploring-the-relationship-between-eye-movements-and-electrocardiogram-interpretation-accuracy
#2
Alan Davies, Gavin Brown, Markel Vigo, Simon Harper, Laura Horseman, Bruno Splendiani, Elspeth Hill, Caroline Jay
Interpretation of electrocardiograms (ECGs) is a complex task involving visual inspection. This paper aims to improve understanding of how practitioners perceive ECGs, and determine whether visual behaviour can indicate differences in interpretation accuracy. A group of healthcare practitioners (n = 31) who interpret ECGs as part of their clinical role were shown 11 commonly encountered ECGs on a computer screen. The participants' eye movement data were recorded as they viewed the ECGs and attempted interpretation...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27902494/an-ultrasound-look-at-korotkoff-sounds-the-role-of-pulse-wave-velocity-and-flow-turbulence
#3
Amir Benmira, Antonia Perez-Martin, Iris Schuster, Florent Veye, Jean Triboulet, Nicolas Berron, Isabelle Aichoun, Sarah Coudray, Jérémy Laurent, Fethi Bereksi-Reguig, Michel Dauzat
AIMS: The aim of this study was to analyze the temporal relationships between pressure, flow, and Korotkoff sounds, providing clues for their comprehensive interpretation. MATERIALS AND METHODS: When measuring blood pressure in a group of 23 volunteers, we used duplex Doppler ultrasonography to assess, under the arm-cuff, the brachial artery flow, diameter changes, and local pulse wave velocity (PWV), while recording Korotkoff sounds 10 cm downstream together with cuff pressure and ECG...
November 29, 2016: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/27899826/an-elective-course-in-cardiovascular-electrophysiology-for-pharmacy-learners
#4
Diptiman D Bose
Objective. To implement an integrated, comprehensive, and learner-centered elective course focused at exposing learners to the interpretation of electrocardiograms and highlighting the mechanisms underlining the abnormal electrophysiological events. Design. Learners were presented with foundational information on the mechanisms underlying electrophysiological changes associated with the development of arrhythmias. They then discussed the interpretation of electrocardiogram (ECG) recordings and diagnosis of cardiovascular events...
October 25, 2016: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/27894294/appropriate-threshold-levels-of-cardiac-beat-to-beat-variation-in-semi-automatic-analysis-of-equine-ecg-recordings
#5
Mette Flethøj, Jørgen K Kanters, Philip J Pedersen, Maria M Haugaard, Helena Carstensen, Lisbeth H Olsen, Rikke Buhl
BACKGROUND: Although premature beats are a matter of concern in horses, the interpretation of equine ECG recordings is complicated by a lack of standardized analysis criteria and a limited knowledge of the normal beat-to-beat variation of equine cardiac rhythm. The purpose of this study was to determine the appropriate threshold levels of maximum acceptable deviation of RR intervals in equine ECG analysis, and to evaluate a novel two-step timing algorithm by quantifying the frequency of arrhythmias in a cohort of healthy adult endurance horses...
November 28, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27893401/heartbeat-classification-using-abstract-features-from-the-abductive-interpretation-of-the-ecg
#6
Tomas Teijeiro, Paulo Felix, Jesus Presedo, Daniel Castro
: This paper aims to prove that automatic beat classification on ECG signals can be effectively solved with a pure knowledge-based approach, using an appropriate set of abstract features obtained from the interpretation of the physiological processes underlying the signal. METHODS: A set of qualitative morphological and rhythm features are obtained for each heartbeat as a result of the abductive interpretation of the ECG. Then, a QRS clustering algorithm is applied in order to reduce the effect of possible errors in the interpretation...
November 21, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27868350/an-elderly-jervell-and-lange-nielsen-patient-heterozygous-compound-for-two-new-kcnq1-mutations
#7
Eliecer Coto, Francisco J García-Fernández, David Calvo, Ricardo Salgado-Aranda, Javier Martín-González, Belén Alonso, Sara Iglesias, Juan Gómez
We present the case of a 66-year-old female with early onset deafness and seizures, who was diagnosed with epilepsy at the age of 2 years. She received antiepileptic drugs and was free of syncope episodes for 32 years. After a syncope at the age of 34, the ECG was characteristic of long-QT syndrome and was treated with antiarrhythmic drugs. Sequencing of the KCNQ1 gene identified two novel KCNQ1 variants interpreted to be pathogenic, and the patient was finally diagnosed with Jervell and Lange-Nielsen syndrome...
November 21, 2016: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/27858506/causes-of-prehospital-misinterpretations-of-st-elevation-myocardial-infarction
#8
Nichole Bosson, Stephen Sanko, Ronald E Stickney, James Niemann, William J French, James G Jollis, Michael C Kontos, Tyson G Taylor, Peter W Macfarlane, Richard Tadeo, William Koenig, Marc Eckstein
OBJECTIVES: To determine the causes of software misinterpretation of ST elevation myocardial infarction (STEMI) compared to clinically identified STEMI to identify opportunities to improve prehospital STEMI identification. METHODS: We compared ECGs acquired from July 2011 through June 2012 using the LIFEPAK 15 on adult patients transported by the Los Angeles Fire Department. Cases included patients ≥18 years who received a prehospital ECG. Software interpretation of the ECG (STEMI or not) was compared with data in the regional EMS registry to classify the interpretation as true positive (TP), true negative (TN), false positive (FP), or false negative (FN)...
November 18, 2016: Prehospital Emergency Care
https://www.readbyqxmd.com/read/27853413/using-lempel-ziv-complexity-to-assess-ecg-signal-quality
#9
Yatao Zhang, Shoushui Wei, Costanzo Di Maria, Chengyu Liu
The poor quality of wireless electrocardiography (ECG) recordings can lead to misdiagnosis and waste of medical resources. This study presents an interpretation of Lempel-Ziv (LZ) complexity in terms of ECG quality assessment, and verifies its performance on real ECG signals. Firstly, LZ complexities for typical signals, namely high-frequency (HF) noise, low-frequency (LF) noise, power-line (PL) noise, impulse (IM) noise, clean artificial ECG signals, and ECG signals with various types of noise added (ECG plus HF, LF, PL, and IM noise, respectively) were analyzed...
2016: Journal of Medical and Biological Engineering
https://www.readbyqxmd.com/read/27837002/safety-of-domperidone-in-treating-nausea-associated-with-dihydroergotamine-infusion-and-headache
#10
Nathaniel M Robbins, Hiroyuki Ito, Melvin M Scheinman, Peter J Goadsby
OBJECTIVE: To determine the safety of domperidone in the treatment of nausea associated with dihydroergotamine (DHE) infusion and headache. METHODS: We audited our use of domperidone for the inpatient management of nausea, focusing on known safety concerns, particularly potential cardiac arrhythmias. RESULTS: We reviewed 103 consecutive admissions of 90 patients admitted for IV DHE by infusion. Most admissions were to treat chronic migraine with (n = 53) or without (n = 46) aura...
November 11, 2016: Neurology
https://www.readbyqxmd.com/read/27824910/3d-finite-element-electrical-model-of-larval-zebrafish-ecg-signals
#11
James Crowcombe, Sundeep Singh Dhillon, Rhiannon Mary Hurst, Stuart Egginton, Ferenc Müller, Attila Sík, Edward Tarte
Assessment of heart function in zebrafish larvae using electrocardiography (ECG) is a potentially useful tool in developing cardiac treatments and the assessment of drug therapies. In order to better understand how a measured ECG waveform is related to the structure of the heart, its position within the larva and the position of the electrodes, a 3D model of a 3 days post fertilisation (dpf) larval zebrafish was developed to simulate cardiac electrical activity and investigate the voltage distribution throughout the body...
2016: PloS One
https://www.readbyqxmd.com/read/27773624/-validation-of-taking-arterial-pulse-in-primary-care-for-the-detection-of-atrial-fibrillation-and-other-cardiac-rhythm-disorders-in-patients-over-65-years-old
#12
L A Pérula-de Torres, V González-Blanco V, R Luque-Montilla, E Martín-Rioboó, M A Martínez-Adell, J Ruiz-de Castroviejo
INTRODUCTION: Atrial fibrillation (AF) is the most frequent arrhythmia in clinical practice and has important prognostic implications. The objective of this study was to demonstrate the validity and the reliability of taking the arterial pulse (TAP) in patients over 65 years for detecting in AF and other rhythm disorders. MATERIALS AND METHODS: A descriptive, observational, multicentre study to validate a diagnostic test within in a controlled clinical trial. SETTING: 39 Primary Care Centres in the Spanish National Health Service...
October 20, 2016: Semergen
https://www.readbyqxmd.com/read/27764869/-hemodynamic-monitoring-basic-monitoring
#13
Torsten Schröder
Basic haemodynamic monitoring is an essential part of the anaesthesia work place. This includes Monitoring of ECG, blood pressure and pulse oximetry. For early assessement of perioperative complications every patient should have a basic haemodynamic monitoring, independant of current health status or the type of anaesthesia applied. Knowledge of function, principles and limitations ais necessary for proper interpretation of the measured values. Here, we describe the function and application of ECG, non - invasive intermittent blood pressure and pulse oximetry in the perioperative setting...
October 2016: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/27761167/genetics-of-brugada-syndrome
#14
Jyh-Ming Jimmy Juang, Minoru Horie
In 1992, the Brugada syndrome (BrS) was recognized as a disease responsible for sudden cardiac death, characterized by a right bundle-branch block with ST segment elevation in the leads V1 and V2. This syndrome is highly associated with sudden cardiac death, especially in young males. BrS is currently diagnosed in patients with ST-segment elevation showing type 1 morphology ≥ 2 mm in ≥1 leads among the right precordial leads V1 or V2 positioned in the 2nd, 3rd, or 4th intercostal space, and occurring either spontaneously or after a provocative drug test by the intravenous administration of Class I antiarrhythmic drugs...
October 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27759433/emergency-physician-accuracy-in-interpreting-electrocardiograms-with-potential-st-segment-elevation-myocardial-infarction-is-it-enough
#15
Giacomo Veronese, Federico Germini, Stella Ingrassia, Ombretta Cutuli, Valeria Donati, Luca Bonacchini, Maura Marcucci, Andrea Fabbri
BACKGROUND: Electrocardiogram (ECG) interpretation is widely performed by emergency physicians. We aimed to determine the accuracy of interpretation of potential ST-segment elevation myocardial infarction (STEMI) ECGs by emergency physicians. METHODS: Thirty-six ECGs resulted in putative STEMI diagnoses were selected. Participants were asked to focus on whether or not the ECG in question met the diagnostic criteria for an acutely blocked coronary artery causing a STEMI...
October 19, 2016: Acute Cardiac Care
https://www.readbyqxmd.com/read/27757473/-typical-atypical-ecgs-and-anterior-wall-infarction-subtle-signs-of-an-acute-coronary-artery-occlucion
#16
S Grautoff
The ECG is a very important diagnostic tool if an acute coronary syndrome is suspected. It should be performed immediately when medical staff contacts the patient. If an ST elevation myocardial infarction (STEMI) is diagnosed, immediate reperfusion of the occluded vessel should be the primary goal. Therefore, even subtle signs of an anterior wall infarction diagnosed by the ECG which lead to suspicion of complete occlusion of a coronary artery should be known and diagnosed by all physicians who may have contact with these types of patients...
October 18, 2016: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/27755012/early-screening-for-cardiovascular-abnormalities-with-preparticipation-echocardiography-feasibility-study
#17
Courtney N Gleason, Deanna L Kerkhof, Elizabeth A Cilia, Maria A Lanyi, Jonathan Finnoff, Dai Sugimoto, Gianmichel D Corrado
OBJECTIVE: The traditional history and physical (H&P) is a poor screening modality to identify athletes at risk for sudden cardiac death. Although better than H&P alone, electrocardiograms (ECG) have also been found to have high false-positive rates. A limited portable ECG by a frontline physician (PEFP) performed during preparticipation physical examination (PPE) allows for direct measurements of the heart to more accurately identify athletes with structural abnormalities. Therefore, it is worthwhile to assess the feasibility of incorporating limited PEFP as part of PPEs...
October 13, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/27734458/alcohol-septal-ablation-in-hypertrophic-cardiomyopathy-utilizing-a-longitudinal-17-year-study-mean-10-8-observation-follow-ups-taken-at-a-single-medical-centre
#18
Andrzej Wojtarowicz, Zdzisława Kornacewicz-Jach
BACKGROUND: Alcohol septal ablation (ASA) is a method of treatment in obstructive hypertrophic cardiomyopathy (HOCM), but there is little data on the long-term results of ASA and the natural course after treatment. The aim of the study was to evaluate the results of ASA in HOCM in multiannual observation, and its impact on patient survival, exercise capacity, electrical complications, and changes in the anatomy and function of the heart. METHODS: The study evaluated 47 patients with HOCM with a high left ventricular outflow tract (LVOT gradient) treated between 1997 and 2014 with ASA...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27733923/ecg-artefact-identification-and-removal-in-mhealth-systems-for-continuous-patient-monitoring
#19
Syed Anas Imtiaz, James Mardell, Siavash Saremi-Yarahmadi, Esther Rodriguez-Villegas
Continuous patient monitoring systems acquire enormous amounts of data that is either manually analysed by doctors or automatically processed using intelligent algorithms. Sections of data acquired over long period of time can be corrupted with artefacts due to patient movement, sensor placement and interference from other sources. Owing to the large volume of data these artefacts need to be automatically identified so that the analysis systems and doctors are aware of them while making medical diagnosis. Three important factors are explored that must be considered and quantified for the design and evaluation of automatic artefact identification algorithms: signal quality, interpretation quality and computational complexity...
September 2016: Healthcare Technology Letters
https://www.readbyqxmd.com/read/27719691/a-survey-of-paediatricians-on-the-use-of-electrocardiogram-for-pre-participation-sports-screening
#20
Angira Patel, Gregory Webster, Kendra Ward, John Lantos
: Aim The aim of the present study was to determine general paediatrician knowledge, practices, and attitudes towards electrocardiogram (ECG) screening in school athletes during pre-participation screening exam (PPSE). METHODS: Paediatricians affiliated with a tertiary children's hospital completed a survey about ECGs for PPSE. RESULTS: In total, 205/498 (41%) responded; 92% of the paediatricians did not include an ECG as part of PPSE; 56% were aware of a case in which a student athlete in their own community had died of sudden unexplained death; 4% had an athlete in their practice die...
October 10, 2016: Cardiology in the Young
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