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ECG interpretation

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https://www.readbyqxmd.com/read/28403965/understanding-fetal-physiology-and-second-line-monitoring-during-labor
#1
REVIEW
C Garabedian, J De Jonckheere, L Butruille, P Deruelle, L Storme, V Houfflin-Debarge
Cardiotocography (CTG) is a technique used to monitor intrapartum fetal condition and is one of the most common obstetric procedures. Second line methods of fetal monitoring have been developed in an attempt to reduce unnecessary interventions due to continuous cardiotocography and to better identify fetuses at risk of intrapartum asphyxia. The acid-base balance of the fetus is evaluated by fetal blood scalp samples, the modification of the myocardial oxygenation by the fetal ECG ST-segment analysis (STAN) and the autonomic nervous system by the power spectral analysis of the fetal heart variability...
February 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28390652/a-fast-noise-tolerant-ecg-feature-recognition-algorithm-based-on-probabilistic-analysis-of-gradient-discontinuity
#2
Peter A Watterson
PURPOSE: Improvement in real-time electrocardiogram (ECG) interpretation is still needed, especially for QT estimation. This paper proposes a fast algorithm for ECG feature recognition, based on locating turning points in the waveform gradient. METHODS: The algorithm places the fiducial point at the maximal value of a probabilistic decision function, assessing line intervals of best fit before and after the point and the point location relative to R-wave peaks already found...
March 14, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28367010/prehospital-delay-and-time-to-reperfusion-therapy-in-st-elevation-myocardial-infarction
#3
Linsha George, Lakshmi Ramamoorthy, Santhosh Satheesh, Rama Prakasha Saya, D K S Subrahmanyam
BACKGROUND: Despite efforts aimed at reducing the prehospital delay and treatment delay, a considerable proportion of patients with ST elevation myocardial infarction (STEMI) present late and receive the reperfusion therapy after unacceptably long time periods. This study aimed at finding out the patients' decision delay, prehospital delay, door-to-electrocardiography (ECG), door-to-needle, and door-to-primary percutaneous coronary intervention (PCI) times and their determinants among STEMI patients...
April 2017: Journal of Emergencies, Trauma, and Shock
https://www.readbyqxmd.com/read/28361477/effect-of-patient-positioning-on-the-evaluation-of-myocardial-perfusion-spect
#4
Bertalan Kracskó, Sándor Barna, Orsolya Sántha, Anett Kiss, József Varga, Attila Forgács, Ildikó Garai
BACKGROUND: ECG-gated SPECT myocardial perfusion imaging is usually acquired in supine position. However, some patients are not comfortable in this position for a variety of personal or medical reasons. Our aim was to investigate the effect of patient positioning on quantitative SPECT imaging results using normal supine database. METHODS: 55 patients (mean age 58.5 ± 8.3 years) were enrolled in this prospective study. Each patient had a pair of ECG-gated stress SPECT myocardial perfusion images acquired on two gamma cameras: one in supine position and the other in upright sitting position...
March 30, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28353213/development-and-validation-of-an-automatic-method-to-detect-the-latest-contracting-viable-left-ventricular-segments-to-assist-guide-crt-therapy-from-gated-spect-myocardial-perfusion-imaging
#5
Weihua Zhou, Ningchao Tao, Xiaofeng Hou, Yao Wang, Russell D Folks, David C Cooke, Valeria M Moncayo, Ernest V Garcia, Jiangang Zou
OBJECTIVES: The purpose of this study is to use ECG-gated SPECT MPI to detect the latest contracting viable left ventricular (LV) segments to help guide the LV probe placement used in CRT therapy and to validate segment selection against the visual integration method by experts. METHODS: For each patient, the resting ECG-gated SPECT MPI short-axis images were sampled in 3D to generate a polar map of the perfusion distribution used to determine LV myocardial viability, and to measure LV synchronicity using our phase analysis tool...
March 28, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28351482/fermi-pasta-ulam-auto-recurrence-in-the-description-of-the-electrical-activity-of-the-heart
#6
M A Novopashin, A V Shmid, A A Berezin
The authors proposed and mathematically described model of a new type of the Fermi-Pasta-Ulam recurrence (the FPU auto recurrence) and hypothesized an adequate description of the heart's electrical dynamics within the observed phenomenon. The dynamics of the FPU auto recurrence making appropriate electrical dynamics of the normal functioning of the heart in the form of an electrocardiogram (ECG) was obtained by a computer model study. The model solutions in the form of the FPU auto recurrence - ECG Fourier spectrum were evaluated for resistance to external disturbances in the form of random effects, as well as periodic perturbation at a frequency close to the heart beating rate of about 1Hz...
April 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28347451/the-role-of-computerized-diagnostic-proposals-in-the-interpretation-of-the-12-lead-electrocardiogram-by-cardiology-and-non-cardiology-fellows
#7
Tomas Novotny, Raymond Bond, Irena Andrsova, Lumir Koc, Martina Sisakova, Dewar Finlay, Daniel Guldenring, Jindrich Spinar, Marek Malik
INTRODUCTION: Most contemporary 12-lead electrocardiogram (ECG) devices offer computerized diagnostic proposals. The reliability of these automated diagnoses is limited. It has been suggested that incorrect computer advice can influence physician decision-making. This study analyzed the role of diagnostic proposals in the decision process by a group of fellows of cardiology and other internal medicine subspecialties. MATERIALS AND METHODS: A set of 100 clinical 12-lead ECG tracings was selected covering both normal cases and common abnormalities...
May 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/28347441/assessment-of-a-personalized-and-distributed-patient-guidance-system
#8
Mor Peleg, Yuval Shahar, Silvana Quaglini, Tom Broens, Roxana Budasu, Nick Fung, Adi Fux, Gema García-Sáez, Ayelet Goldstein, Arturo González-Ferrer, Hermie Hermens, M Elena Hernando, Val Jones, Guy Klebanov, Denis Klimov, Daniel Knoppel, Nekane Larburu, Carlos Marcos, Iñaki Martínez-Sarriegui, Carlo Napolitano, Àngels Pallàs, Angel Palomares, Enea Parimbelli, Belén Pons, Mercedes Rigla, Lucia Sacchi, Erez Shalom, Pnina Soffer, Boris van Schooten
OBJECTIVES: The MobiGuide project aimed to establish a ubiquitous, user-friendly, patient-centered mobile decision-support system for patients and for their care providers, based on the continuous application of clinical guidelines and on semantically integrated electronic health records. Patients would be empowered by the system, which would enable them to lead their normal daily lives in their regular environment, while feeling safe, because their health state would be continuously monitored using mobile sensors and self-reporting of symptoms...
May 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/28341306/high-frequency-qrs-analysis-in-the-evaluation-of-chest-pain-in-the-emergency-department
#9
Ori Galante, Guy Amit, Yair Granot, Linda R Davrath, Shimon Abboud, Doron Zahger
OBJECTIVES: High frequency QRS (HFQRS) analysis has been shown to be an accurate marker for myocardial ischemia. Our objective was to test the use of HFQRS in diagnosing ACS in the emergency department. METHODS: 324 patients presenting to the ED with chest pain were enrolled. Resting ECG was recorded and later analyzed by an HFQRS algorithm. Results were compared to the conventional ECG diagnosis by 3 independent interpretations: treating physician, expert cardiologist and an automated computer program...
February 20, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28339578/safe-automatic-one-lead-electrocardiogram-analysis-in-screening-for-atrial-fibrillation
#10
Emma Svennberg, Martin Stridh, Johan Engdahl, Faris Al-Khalili, Leif Friberg, Viveka Frykman, Mårten Rosenqvist
Aims: Screening for atrial fibrillation (AF) using intermittent electrocardiogram (ECG) recordings can identify individuals at risk of AF-related morbidity in particular stroke. We aimed to validate the performance of an AF screening algorithm compared with manual ECG analysis by specially trained nurses and physicians (gold standard) in 30 s intermittent one-lead ECG recordings. Methods: The STROKESTOP study is a mass-screening study for AF using intermittent ECG recordings...
October 6, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339570/frequency-of-different-electrocardiographic-abnormalities-in-a-large-cohort-of-spanish-workers
#11
Jorge Rodríguez-Capitán, Ana Fernández-Meseguer, José Manuel García-Pinilla, Eva Calvo-Bonacho, Manuel Jiménez-Navarro, Teresa García-Margallo, Fernando Cabrera-Bueno, Ignacio Echeverria-Lucotti, Juan José Gómez-Doblas, Eduardo De Teresa-Galván
Aims: Our aim was to describe the electrocardiographic findings of a large sample of Spanish workers from several different employment sectors. Methods and results: Between May 2008 and November 2010, 13 495 consecutive 12-lead resting electrocardiograms (ECGs) were obtained during health examinations of working adults aged 16-74 years in 5 cities in different regions of Spain. Of those, 13 179 ECGs suitable for interpretation were included in this study. All tracings were classified by the same cardiologist, according to the Minnesota Code criteria...
October 6, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28336387/the-word-heart-federation-roadmap-for-nonvalvular-atrial-fibrillation
#12
Adrianna Murphy, Amitava Banerjee, Günter Breithardt, A John Camm, Patrick Commerford, Ben Freedman, J Antonio Gonzalez-Hermosillo, Jonathan L Halperin, Chu-Pak Lau, Pablo Perel, Denis Xavier, David Wood, Xavier Jouven, Carlos A Morillo
BACKGROUND: The World Heart Federation has undertaken an initiative to develop a series of Roadmaps to promote development of national policies and health systems approaches, and to identify potential roadblocks on the road to effective prevention, detection, and management of cardiovascular disease in low-and middle-income countries (LMICs) and develop strategies for overcoming these. This Roadmap focuses on atrial fibrillation (AF). AF is the most common, clinically significant arrhythmia and, among other clinical outcomes, is associated with increased risk of stroke...
March 20, 2017: Global Heart
https://www.readbyqxmd.com/read/28329355/international-recommendations-for-electrocardiographic-interpretation-in-athletes
#13
Sanjay Sharma, Jonathan A Drezner, Aaron Baggish, Michael Papadakis, Mathew G Wilson, Jordan M Prutkin, Andre La Gerche, Michael J Ackerman, Mats Borjesson, Jack C Salerno, Irfan M Asif, David S Owens, Eugene H Chung, Michael S Emery, Victor F Froelicher, Hein Heidbuchel, Carmen Adamuz, Chad A Asplund, Gordon Cohen, Kimberly G Harmon, Joseph C Marek, Silvana Molossi, Josef Niebauer, Hank F Pelto, Marco V Perez, Nathan R Riding, Tess Saarel, Christian M Schmied, David M Shipon, Ricardo Stein, Victoria L Vetter, Antonio Pelliccia, Domenico Corrado
Sudden cardiac death (SCD) is the leading cause of mortality in athletes during sport. A variety of mostly hereditary, structural, or electrical cardiac disorders are associated with SCD in young athletes, the majority of which can be identified or suggested by abnormalities on a resting 12-lead electrocardiogram (ECG). Whether used for diagnostic or screening purposes, physicians responsible for the cardiovascular care of athletes should be knowledgeable and competent in ECG interpretation in athletes. However, in most countries a shortage of physician expertise limits wider application of the ECG in the care of the athlete...
February 20, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28328689/adult-chest-pain-in-the-pediatric-emergency-department-treatment-and-timeliness-from-door-in-to-door-out
#14
Jeffrey H Sacks, Peter B Flueckiger, Philip R Spandorfer, William T Mahle, Brian E Costello
OBJECTIVES: The American College of Cardiology Foundation/American Heart Association guidelines for acute coronary syndrome (ACS) recommend immediate aspirin (ASA) administration, an electrocardiogram (ECG) in less than 10 minutes, and a door-in to door-out (DIDO) time less than 30 minutes for interfacility transfer. We sought to determine if compliance is hindered when adults with suspected ACS present to pediatric facilities. METHODS: Visits to the 2 tertiary care emergency departments of a pediatric healthcare system using an adult chest pain protocol were examined from October 2006 to September 2012...
March 21, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28318658/sudden-death-in-athletes
#15
Domenico Corrado, Alessandro Zorzi
Competitive sports activity is associated with an increased risk of sudden cardiovascular death (SCD) in adolescents and young adults with clinically silent cardiovascular disorders. While in middle-aged/senior athletes atherosclerotic coronary artery disease accounts for the vast majority of SCDs, in young athletes the spectrum of substrates is wider and includes inherited (cardiomyopathies) and congenital (anomalous origin of coronary arteries) structural heart diseases. Inherited ion channel diseases have been implicated in SCDs occurring with an apparently normal heart at autopsy...
March 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28278167/superior-success-rate-of-intracavitary-electrocardiogram-guidance-for-peripherally-inserted-central-catheter-placement-in-patients-with-cancer-a-randomized-open-label-controlled-multicenter-study
#16
Ling Yuan, Rongmei Li, Aifeng Meng, Yuling Feng, Xiancui Wu, Yiqun Yang, Ping Chen, Zhenzhu Qiu, Jing Qi, Chuanying Chen, Jia Wei, Minyi Qin, Weiwei Kong, Xiangyu Chen, Wei Xu
BACKGROUND: Intracavitary electrocardiogram (IC ECG) guidance emerges as a new technique for peripherally inserted central catheters (PICCs) placement and demonstrates many potential advantages in recent observational studies. AIMS: To determine whether IC ECG-guided PICCs provide more accurate positioning of catheter tips compared to conventional anatomical landmarks in patients with cancer undergoing chemotherapy. METHODS: In this multicenter, open-label, randomized controlled study (ClinicalTrials...
2017: PloS One
https://www.readbyqxmd.com/read/28270204/friend-or-foe-flipped-classroom-for-undergraduate-electrocardiogram-learning-a-randomized-controlled-study
#17
RANDOMIZED CONTROLLED TRIAL
Zeng Rui, Xiang Lian-Rui, Yue Rong-Zheng, Zeng Jing, Wan Xue-Hong, Zuo Chuan
BACKGROUND: Interpreting an electrocardiogram (ECG) is not only one of the most important parts of clinical diagnostics but also one of the most difficult topics to teach and learn. In order to enable medical students to master ECG interpretation skills in a limited teaching period, the flipped teaching method has been recommended by previous research to improve teaching effect on undergraduate ECG learning. METHODS: A randomized controlled trial for ECG learning was conducted, involving 181 junior-year medical undergraduates using a flipped classroom as an experimental intervention, compared with Lecture-Based Learning (LBL) as a control group...
March 7, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28269712/heart-rate-variability-as-a-biomarker-for-sedation-depth-estimation-in-icu-patients
#18
Sunil B Nagaraj, Sowmya M Ramaswamy, Siddharth Biswal, Emily J Boyle, David W Zhou, Lauren M Mcclain, Eric S Rosenthal, Patrick L Purdon, M Brandon Westover
An automated patient-specific system to classify the level of sedation in ICU patients using heart rate variability signal is presented in this paper. ECG from 70 mechanically ventilated adult patients with administered sedatives in an ICU setting were used to develop a support vector machine based system for sedation depth monitoring using several heart rate variability measures. A leave-one-subject-out cross validation was used for classifier training and performance evaluations. The proposed patient-specific system provided a sensitivity, specificity and an AUC of 64%, 84...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268382/portable-electrocardiogram-device-using-android-smartphone
#19
S G E Brucal, G K D Clamor, L A O Pasiliao, J P F Soriano, L P M Varilla
Portable electrocardiogram (ECG) capturing device can be interfaced to a smart phone installed with an android-based application (app). This app processes and analyses the data sent by the device to provide an interpretation of the patient/user's heart current condition (e.g.: beats per minute, heart signal waveform, R-R interval). The ECG recorded by the app is stored in the smart phone's Secure Digital (SD) card and cloud storage which can be accessed remotely by a physician to aid in providing medical diagnosis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28258178/international-criteria-for-electrocardiographic-interpretation-in-athletes
#20
Jonathan A Drezner, Sanjay Sharma, Aaron Baggish, Michael Papadakis, Mathew G Wilson, Jordan M Prutkin, Andre La Gerche, Michael J Ackerman, Mats Borjesson, Jack C Salerno, Irfan M Asif, David S Owens, Eugene H Chung, Michael S Emery, Victor F Froelicher, Hein Heidbuchel, Carmen Adamuz, Chad A Asplund, Gordon Cohen, Kimberly G Harmon, Joseph C Marek, Silvana Molossi, Josef Niebauer, Hank F Pelto, Marco V Perez, Nathan R Riding, Tess Saarel, Christian M Schmied, David M Shipon, Ricardo Stein, Victoria L Vetter, Antonio Pelliccia, Domenico Corrado
Sudden cardiac death (SCD) is the leading cause of mortality in athletes during sport. A variety of mostly hereditary, structural or electrical cardiac disorders are associated with SCD in young athletes, the majority of which can be identified or suggested by abnormalities on a resting 12-lead electrocardiogram (ECG). Whether used for diagnostic or screening purposes, physicians responsible for the cardiovascular care of athletes should be knowledgeable and competent in ECG interpretation in athletes. However, in most countries a shortage of physician expertise limits wider application of the ECG in the care of the athlete...
March 3, 2017: British Journal of Sports Medicine
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