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Letteratura scientifica selezionata sul tema "Electrocardiography"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 29 luglio 2024

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Articoli di riviste sul tema "Electrocardiography"

Brooks, Carol Ann, Nancy Kanyok, Colin O’Rourke e Nancy M. Albert. "Retention of Baseline Electrocardiographic Knowledge After a Blended-Learning Course". American Journal of Critical Care 25, n. 1 (1 gennaio 2016): 61–67. http://dx.doi.org/10.4037/ajcc2016556.

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Background Among nurses, skill retention after an electrocardiography blended-learning course is unknown. Objectives To compare 3- and 8-week electrocardiography test scores, compare scores by nurse and work characteristics and self-assessed electrocardiographic competence, and compare 1-year work retention with 3- and 8-week scores and change in scores from week 3 to week 8. Methods Data were collected on demographics, comfort with electrocardiography expectations, electrocardiography competence levels, and 1-year work retention. Correlational and comparative statistics were used in analyses. Results Of 69 nurses, 58% were somewhat comfortable with interventions for abnormal rhythms. Test scores were higher at 3 weeks than at 8 weeks: mean difference, 26%; P < .001. Scores at 8 weeks reflected intermediate skill retention and were not associated with nurse characteristics, electrocardiography background, comfort with rhythms and measurements, or 1-year work retention. Nurses with greater comfort for intervening when rhythm abnormalities occurred had higher median 8-week scores (P = .01) than did nurses with less comfort, and perceptions of electrocardiographic competence were associated with 8-week scores (r = 0.28; P = .02). Reduction in scores at 8 weeks was less severe in nurses with greater comfort at 3 weeks in measuring electrocardiographic intervals (P = .008) and applying therapeutic interventions (P = .009). Conclusions Skill retention and competence in electrocardiographic interpretation were intermediate and correlated with baseline self-assessment. Electrocardiographic interpretation, measurement, and interventions should be reinforced at the bedside.

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Artsymovych, Agar, Olena Oshlianska, Olena Okhotnikova, Zoia Rossokha, Olena Popova, Nataliia Medvedeva, Victoriia Vershigora, Illya Chaikovsky e Olga Kryvova. "Possibilities of using determination of allelic polymorphism of interleukin-6 G174C and tumour necrosis factor-α G308A genes for the prediction of cardiovascular disorders in children with juvenile idiopathic arthritis". Pediatria i Medycyna Rodzinna 18, n. 1 (31 maggio 2022): 58–69. http://dx.doi.org/10.15557/pimr.2022.0008.

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Objectives: Juvenile idiopathic arthritis is a chronic disease that affects the synovial membrane of the joints, but can also lead to secondary lesions of the cardiovascular system. The most important mechanism of myocardial damage is associated with the effect of proinflammatory cytokines. The aim of the study was to propose a method of early detection of cardiovascular system changes and lesions in patients with juvenile idiopathic arthritis based on the determination of allelic polymorphism combined with electrocardiography data. Materials and methods: 102 patients with juvenile idiopathic arthritis underwent a general clinical examination. The overall activity of juvenile idiopathic arthritis was assessed using the Juvenile Arthritis Disease Activity Score. In addition, the patients underwent an electrocardiographic evaluation using the software and hardware complex “Cardioplus P,” which is a portable electrocardiograph providing “signal-averaged” electrocardiography performing the recognition and measurement of amplitude-time parameters, and calculation of secondary electrocardiography parameters. The genotypes of patients were additionally determined by alleles of the TNF-α (G308A) and IL6 (G174C) genes by polymerase chain reaction. Results: The overall number of mutations affects the course of the disease, with two or more mutations being associated with a more aggressive course of the disease, a more pronounced degree of inflammation, and a higher frequency of extra-articular lesions. The complex indicator of the functional state of the myocardium according to the electrocardiography data differed significantly (p = 0.00001) in clusters. Conclusion: Patients with juvenile idiopathic arthritis with two or more mutations in different genes of proinflammatory cytokines have a higher activity of the inflammatory process and a higher frequency of cardiovascular changes according to 4th generation electrocardiography. The determination of polymorphism may be useful in evaluating the risk of development of cardiovascular system abnormalities.

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Iacobescu, Radu-Alexandru, Luiza-Elena Corneanu, Alina-Mihaela Dimache, Bogdan-Danut Florescu e Adorata-Elena Coman. "Role of nurses' electrocardiography competency in emergent situations". Romanian Journal of Medical Practice 18, n. 3 (30 settembre 2023): 125–29. http://dx.doi.org/10.37897/rjmp.2023.3.5.

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Electrocardiography is an essential tool in emergency care and monitoring of patients with severe cardiovascular diseases. Nurses are at the center of this evaluation and play an important role in the outcome of therapy. Data shows that nurses are limited in their ability to record and interpret electrocardiography diagrams accurately. Little is known about the role nurses play in electrocardiographic evaluation in an emergency. This narrative literature review assesses the competency of nurses in electrocardiography in an emergency, the implications for medical practice, and tries to identify possible improvement solutions.

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Altalhi, Hanan G. K., e Asgad A. Abdalgbar. "Accuracy of the Electrocardiogram in Identifying Chronic Heart Failure due to Left Ventricular Systolic Dysfunction". Al-Mukhtar Journal of Sciences 28, n. 1 (30 giugno 2013): 39–45. http://dx.doi.org/10.54172/mjsc.v28i1.143.

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There is a common assumption that a normal electrocardiography rules out chronic heart failure due to left ventricular systolic dysfunction (LVSD). In this research work, an assessment of the value of electrocardiography in identifying patients with chronic heart failure due to LVSD was investigated. Patients admitted to Al-Bayda central hospital with suspicion of heart failure for clinical assessment and electrocardiography, echocardiography; the accuracy of each screening tests were calculated for left ventricular systolic dysfunction and heart failure. A total of 120 patients' aged between 36-100 years was assessed; 22 patients had impaired left ventricular systolic function, among them 21 patients had major electrocardiography abnormalities (Left bundle branch block, pathological Q wave, Left ventricular hypertrophy, poor R wave prog-ression, Ischemic ST-T changes, Left anterior fascicular block, IV conduction defect). Out of 98 patients with normal left ventricular systolic function, 38 had major electrocardiography abnormalities. In conclusion, the study showed that left ventricular systolic dysfunction is un likely to be present if the electrocardiography is normal (or shows only minor abnormalities); conversely, there is usually a major electrocardiographic abnormality in the presence of left ventricular systolic dysfunction.

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Sendelbach, Sue, Sharon Wahl, Anita Anthony e Pam Shotts. "Stop the Noise: A Quality Improvement Project to Decrease Electrocardiographic Nuisance Alarms". Critical Care Nurse 35, n. 4 (1 agosto 2015): 15–22. http://dx.doi.org/10.4037/ccn2015858.

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BACKGROUNDAs many as 99% of alarm signals may not need any intervention and can result in patients’ deaths. Alarm management is now a Joint Commission National Patient Safety Goal.OBJECTIVESTo reduce the number of nuisance electrocardiographic alarm signals in adult patients on the medical cardiovascular care unit.METHODSA quality improvement process was used that included eliminating duplicative alarms, customizing alarms, changing electrocardiography electrodes daily, standardizing skin preparation, and using disposable electrocardiography leads.RESULTSIn the cardiovascular care unit, the mean number of electrocardiographic alarm signals per day decreased from 28.5 (baseline) to 3.29, an 88.5% reduction.CONCLUSIONUse of a bundled approach to managing alarm signals decreased the mean number of alarm signals in a cardiovascular care unit. (Critical Care Nurse. 2015;35[4]:15–23)

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Cicogna, Maria, Piero Boni, Tommaso Frigo e Domenico Caivano. "Base-apex electrocardiographic examination in healthy cows of Chianina breed". Open Veterinary Journal 12, n. 6 (2022): 951. http://dx.doi.org/10.5455/ovj.2022.v12.i6.22.

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Background: The electrocardiography is a useful diagnostic tool for the characterization of the cardiac rhythm in veterinary medicine. In cattle, standard electrocardiographic exam is commonly performed using the base-apex lead system and reference values for ECG parameters have been reported for different breed of cows. However, no electrocardiographic studies have been conducted in Chianina breed. Aim: To determine the feasibility and normal values for standard base-apex electrocardiography in clinically healthy Chianina cows. Methods: A standard base-apex electrocardiographic examination was acquired in 45 Chianina cows. All the cows were considered healthy based on history and physical examination. The following ECG parameters were evaluated: heart rate; morphology of P wave, QRS complex and T wave; amplitude and duration of P wave, QRS complex, and T wave; duration of PR and QT intervals. Correlations between ECG parameters and clinical variables were analyzed. Results: Morphology of the electrocardiographic waves/complexes and values for all ECG parameters recorded in the 45 clinically healthy Chianina cows were reported. Correlations between heart rate and body weight, QT interval and body weight, QT interval and heart rate, P wave amplitude and heart rate, PR interval and heart rate, R wave amplitude and age were observed. Statistical difference between heart rate in pregnant and not-pregnant cows was also found. Conclusion: Base-apex electrocardiogram is suitable for monitoring heart rhythm in clinically healthy Chianina cows and reference values for main electrocardiographic parameters have been reported for this breed. This study can be a useful contribution to the literature, updating current knowledge on the electrocardiography in cattle.

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Batra, Mahesh Kumar, Atif Khan, Fawad Farooq, Tariq Masood e Musa Karim. "Assessment of electrocardiographic criteria of left atrial enlargement". Asian Cardiovascular and Thoracic Annals 26, n. 4 (27 marzo 2018): 273–76. http://dx.doi.org/10.1177/0218492318768131.

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Background Left atrial enlargement is considered to be a robust, strong, and widely acceptable indicator of cardiovascular outcomes. Echocardiography is the gold standard for measurement of left atrial size, but electrocardiography can be simple, cost-effective, and noninvasive in clinical practice. This study was undertaken to assess the diagnostic accuracy of an established electrocardiographic criterion for left atrial enlargement, taking 2-dimensional echocardiography as the gold-standard technique. Methods A cross-sectional study was conducted on 146 consecutively selected patients with the complaints of dyspnea and palpitation and with a murmur detected on clinical examination, from September 10, 2016 to February 10, 2017. Electrocardiography and echocardiography were performed in all patients. Patients with a negative P wave terminal force in lead V1 > 40 ms·mm on electrocardiography or left atrial dimension > 40 mm on echocardiography were classified as having left atrial enlargement. Sensitivity and specificity were calculated to assess the diagnostic accuracy. Results Taking 2-dimensional echocardiography as the gold-standard technique, electrocardiography correctly diagnosed 68 patients as positive for left atrial enlargement and 12 as negative. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of electrocardiography for left atrial enlargement were 54.4%, 57.1%, 88.3%, 17.4%, and 54.8%, respectively. Conclusion The electrocardiogram appears to be a reasonable indicator of left atrial enlargement. In case of nonavailability of echocardiography, electrocardiography can be used for diagnosis of left atrial enlargement.

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Dhodary, Shyam, Surendra Uranw, Naveen Kumar Pandey e Prahlad Karki. "Comparative Study of Electrocardiographic and Echocardiographic Evidence of Left Ventricular Hypertrophy in Systemic Hypertension". Journal of Advances in Internal Medicine 10, n. 2 (31 dicembre 2021): 71–75. http://dx.doi.org/10.3126/jaim.v10i2.40289.

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Background and Aims: Hypertension is a common health problem. Left ventricular hypertrophy, a condition in hypertension is a risk factor for myocardial infarction, stroke and heart failure. This study aims to detect left ventricular hypertrophy in hypertensive patients using Electrocardiography and echocardiography. Methods: In this descriptive cross-sectional study; 143 patients of Hypertension from February 2019 to August 2019 were enrolled. They were evaluated for left ventricular hypertrophy using electrocardiography and echocardiography. Sokolow-Lyon and Cornell Voltage electrocardiographic criteria were used and their sensitivities and specificities to detect left ventricular hypertrophy were calculated taking echocardiography as a gold standard method. Results: The mean age of the study population was 58.69 ± 11.33 years. Mean duration of hypertension was 4.72 ±3.2 years. The mean systolic and diastolic blood pressure were 137 ± 15.42 mmHg and 84 ± 10.5 mmHg respectively. Out of 143 study population, 30(21%) of them had left ventricular hypertrophy on electrocardiography as defined by Sokolow-Lyon criteria, and 29(20.3%) had left ventricular hypertrophy on electrocardiography as per Cornell Voltage criteria. On combining both Sokolow-Lyon and Cornell Voltage criteria, 37(25.9%) of the study population had left ventricular hypertrophy on electrocardiography (either as per Sokolow-Lyon or Cornell Voltage criteria). On echocardiography, 62(43.4%) of them were found to have left ventricular hypertrophy. Conclusions: Electrocardiography is a less sensitive tool to diagnose Left Ventricular Hypertrophy in hypertension but its specificity is high (>95%). Investigation of choice to detect Left Ventricular Hypertrophy in hypertensive people is still the echocardiography.

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SR, Mittal. "Ectopic Supraventricular Rhythms during Exercise Electrocardiography". Open Access Journal of Cardiology 7, n. 1 (2023): 1–5. http://dx.doi.org/10.23880/oajc-16000190.

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Three cases of the new appearance of ectopic supraventricular rhythms during exercise electrocardiography are presented. Transient decrease in the rate of the sinoatrial node or transient increase in the rate of subsidiary pacemaker are responsible. Electrocardiographic criteria for diagnosing the site of origin of supraventricular ectopic foci are discussed. The diagnostic, and prognostic significance of such a finding is not known.

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Druyan, L. I., A. L. Kalinin e N. B. Krivelevich. "PROPEDEUTICS ASPECTS OF UNDERSTANDING OF ATRIOVENTRICULAR CONDUCTION AND ITS ELECTROCARDIOGRAPHIC REFLECTION". Health and Ecology Issues, n. 1 (28 marzo 2016): 7–13. http://dx.doi.org/10.51523/2708-6011.2016-13-1-2.

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The work offers two variants of explanation and understanding of atrioventricular conduction while teaching students how to interpret electrocardiography and considers the electrocardiographic reflection of the transmission of the excitation impulse throughout the cardiac conduction system and the myocardium.

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Tesi sul tema "Electrocardiography"

Namprempre, Chanathip. "Electrocardiography in DICOM". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42751.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
Includes bibliographical references (p. 69).
by Chanathip Namprempre.
M.Eng.

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Lopez, Rincon Alejandro. "Le problème inverse en l'électrocardiographie". Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR15261/document.

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Dans le problème inverse d’électrocardiographie, le cible est faire la reconstruction de l’activité électrophysiologique dans le cœur sans mesurer directement dans sa surface (sans interventions avec cathéter). Il est important remarque que en l’actualité la solution numérique du problème inverse est résolu avec le modèle quasi-statique. Ce modèle ne considère pas la dynamique du cœur et peut produire des erreurs dans la reconstruction de la solution sur la surface du cœur. Dans cette thèse, différents méthodologies était investigue pour résoudre le problème inverse d’électrocardiographie comme intelligence artificielle, et modèles dynamiques limites. Aussi, les effets de différents opérateurs en utilisant méthodes d’éléments de frontière , et méthodes d’élément finis était investigue
In the inverse problem of electrocardiography, the target is to make the reconstruction of electrophysiological activity in the heart without measuring directly in its surface (without interventions with catheter). It is important to note that the current numerical solution of the inverse problem is solved with the quasi-static model. This model does not consider the dynamics of the heart and can cause errors in the reconstruction of the solution on the surface of the heart. This thesis investigates different methodologies was to solve the inverse problem of electrocardiography as artificial intelligence and dynamic models limits. Also, the effects of different operators using boundary element methods, finite element methods, and was investigates

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Rusnak, I. T. "Differentiated electrocardiography to improve diagnostics". Thesis, БДМУ, 2017. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/17086.

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Fox, Alice J. Sophia Women's &amp Children's Health Faculty of Medicine UNSW. "Non-invasive procedure for fetal electrocardiography". Awarded by:University of New South Wales. Women's & Children's Health, 2007. http://handle.unsw.edu.au/1959.4/41240.

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Antenatal fetal surveillance is a field of increasing importance in modern obstetrics. Measurements extracted (such as fetal heart rate) from antenatal fetal monitoring techniques have the potential to reduce the social, personal and financial burdens of fetal death on families, health care systems and the community. Techniques to monitor the fetus through pregnancy have been developed with the aim of providing information to enable the clinician to diagnose fetal wellbeing, characterise development and detect abnormality. An early diagnosis before delivery may increase the effectiveness of the appropriate treatment. Over the years, various research efforts have been carried out in the field of fetal electrocardiography by attaching surface electrodes to the maternal body. Unfortunately the desired fetal heartbeat signals at the electrode output are buried in an additive mixture of undesired interference disturbances. In this thesis, a non-invasive fetal electrocardiogram machine has been designed, constructed and implemented. This machine is composed of three modified electrocardiogram circuits and an external soundcard. Data was acquired from four surface electrodes placed on the maternal body. Eleven pregnant subjects, with a gestation age between the 30th and 40th weeks of pregnancy, were used to investigate the validity of this machine. Fetal R-waves were detected in 72.7 percent of subjects. The development of a non-invasive machine, capable of detecting and recording valuable anatomic and electrophysiological information of a fetus, represents an important tool in clinical and investigative obstetrics.

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Howell, Stephen John Lamb. "Simultaneous ambulatory cassette electroencephalography and electrocardiography". Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316986.

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Farina, Dmytro. "Forward and inverse problems of electrocardiography clinical investigation". Karlsruhe : Univ.-Verl. Karlsruhe, 2008. http://d-nb.info/988009609/34.

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Crowcombe, James Edward. "Larval zebrafish electrocardiography electrodynmaic modelling and sensor design". Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7545/.

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This thesis presents the first model of the electrical activity of the larval zebrafish heart as well as the design and fabrication of novel electrode arrays that were created to measure the electrocardiogram. The model consists of realistic 3D geometry of a 3 day’s post fertilisation zebrafish heart and body with a bidomain electrical model that uses the Fitzhugh-Nagumo equations as the ionic model. The model is able to replicate experimentally observed conduction velocities and action potentials by using region specific parameters and simulate electrocardiograms that are comparable to measurements. The electrode arrays are constructed from flexible polyimide films with gold microelectrodes. These devices have the potential to improve the measurement of the electrocardiogram for drug screening applications as an alternative to the use of micropipette electrodes. Gold plating and PEDOT:PSS coating techniques were applied to the devices to successfully reduce electrode impedance with the effectiveness of each technique categorised using impedance spectroscopy. The devices were tested in vivo with larval zebrafish with limited success and so in vitro tests were conducted using an artificial current source.

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Mukalaf, A. "Adaptive cancellation techniques for noise reduction in electrocardiography". Thesis, Keele University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380184.

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Gao, George Qi. "Computerised detection and classification of five cardiac conditions thesis submitted in partial fulfilment of the degree of Master of Engineering, Auckland University of Technology, May 2003". Full thesis. Abstract, 2003.

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DeLong, David James. "Spectral analysis of heart rate variability : acquisition/analysis software development /". Online version of thesis, 1992. http://hdl.handle.net/1850/10858.

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Più fonti

Libri sul tema "Electrocardiography"

Rawlings, Charles A. Electrocardiography. Redmond, Wash: SpaceLabs Inc., 1991.

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Luna, Antonio Bayés de. Clinical electrocardiography. Chichester, West Sussex: Wiley, 2012.

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Petty, Brent G. Basic Electrocardiography. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-2413-4.

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Malik, Marek, e A. John Camm, a cura di. Dynamic Electrocardiography. Oxford, UK: Blackwell Publishing, 2004. http://dx.doi.org/10.1002/9780470987483.

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Abdulla, Ra-id, William Bonney, Omar Khalid e Sawsan Awad, a cura di. Pediatric Electrocardiography. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26258-1.

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Petty, Brent G. Basic Electrocardiography. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-32886-3.

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Bays de Luna, A., a cura di. Basic Electrocardiography. Oxford, UK: Blackwell Publishing Ltd, 2007. http://dx.doi.org/10.1002/9780470692622.

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Bayés De Luna, Antoni. Clinical Electrocardiography. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118392041.

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S, Wagner Galen, a cura di. Practical electrocardiography. 8^a ed. Baltimore: Williams & Wilkins, 1988.

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F, Campbell R. W., e Murray Alan 1946-, a cura di. Dynamic electrocardiography. Edinburgh: Churchill Livingstone, 1985.

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Capitoli di libri sul tema "Electrocardiography"

Lawrence, Tracey. "Electrocardiography". In Veterinary Anesthetic and Monitoring Equipment, 253–69. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119277187.ch20.

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Dubin, Anne M. "Electrocardiography". In Pediatric Cardiovascular Medicine, 102–12. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781444398786.ch7.

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DiMino, Tara L., Alexander Ivanov, James F. Burke e Peter R. Kowey. "Electrocardiography". In Essential Cardiology, 95–112. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6705-2_7.

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Clark, Michael. "Electrocardiography". In Brackenridge’s Medical Selection of Life Risks, 545–58. London: Palgrave Macmillan UK, 2006. http://dx.doi.org/10.1007/978-1-349-72324-9_22.

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Willis, Ruth. "Electrocardiography". In Guide to Canine and Feline Electrocardiography, 35–56. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119254355.ch4.

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Chesler, Elliot. "Electrocardiography". In Clinical Cardiology, 88–120. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4613-9183-8_6.

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Côté, Etienne, Kristin A. MacDonald, Kathryn M. Meurs e Meg M. Sleeper. "Electrocardiography". In Feline Cardiology, 77–82. West Sussex, UK: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118785782.ch9.

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Homsy, Jason, Philip J. Podrid, Philip J. Podrid e Philip J. Podrid. "Electrocardiography". In MGH Cardiology Board Review, 580–622. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4483-0_36.

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Clark, Michael. "Electrocardiography". In Brackenridge’s Medical Selection of Life Risks, 545–58. London: Palgrave Macmillan UK, 2006. http://dx.doi.org/10.1007/978-1-349-56632-7_22.

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Rapezzi, Claudio, Alberto Foà e Raffaello Ditaranto. "Electrocardiography". In Myocarditis, 129–42. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-35276-9_7.

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Atti di convegni sul tema "Electrocardiography"

"Off-the-Person Electrocardiography". In Special Session on Pervasive Electrocardiography. SCITEPRESS - Science and and Technology Publications, 2013. http://dx.doi.org/10.5220/0004647700990106.

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"Comparative Study of Medical-grade and Off-the-Person ECG Systems". In Special Session on Pervasive Electrocardiography. SCITEPRESS - Science and and Technology Publications, 2013. http://dx.doi.org/10.5220/0004675501150120.

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"Heart Rate Variability - Knowing More about HRV Analysis and Fatigue in Transport Studies". In Special Session on Pervasive Electrocardiography. SCITEPRESS - Science and and Technology Publications, 2013. http://dx.doi.org/10.5220/0004666501070114.

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Hoang, Quang Huy, Xuan Bach Tran, Le Hieu Nguyen, Anh Vu Tran e Viet Dung Nguyen. "Electrocardiography Anomaly Detection". In 2023 International Conference on Advanced Technologies for Communications (ATC). IEEE, 2023. http://dx.doi.org/10.1109/atc58710.2023.10318912.

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Bin Wan Ibrahim, W. Mohd Azhar, e E. H. Mirza. "Remote sensing electrocardiography". In 2013 International Conference on Computer Medical Applications (ICCMA 2013). IEEE, 2013. http://dx.doi.org/10.1109/iccma.2013.6506179.

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Hansen, Ingeborg H., Karsten Hoppe, Anna Gjerde, Joergen K. Kanters e Helge B. D. Sorensen. "Comparing twelve-lead electrocardiography with close-to-heart patch based electrocardiography". In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2015. http://dx.doi.org/10.1109/embc.2015.7318366.

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Fujii, Yoichi. "Digital light-emitting electrocardiography". In Fourteenth International Conference on Optical Fiber Sensors, a cura di A. G. Mignani e H. C. Lefèvre. SPIE, 2000. http://dx.doi.org/10.1117/12.2302216.

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Ungson, Y., e M. A. Reyna. "Wireless network for electrocardiography". In 2013 Pan American Health Care Exchanges (PAHCE). IEEE, 2013. http://dx.doi.org/10.1109/pahce.2013.6568213.

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Reyna, M. A., C. I. Lima, R. L. Avitia e M. E. Bravo. "Wireless Electrodes for Electrocardiography". In 2015 Pan American Health Care Exchanges (PAHCE). IEEE, 2015. http://dx.doi.org/10.1109/pahce.2015.7173346.

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Jurak, Pavel, Pavel Leinveber, Filip Plesinger, Karol Curila, Ivo Viscor, Vlastimil Vondra, Magdalena Matejkova et al. "Ultra-High-Frequency Electrocardiography". In 2021 Computing in Cardiology (CinC). IEEE, 2021. http://dx.doi.org/10.23919/cinc53138.2021.9662795.

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Rapporti di organizzazioni sul tema "Electrocardiography"

Naydenov, Stefan, Nikolay Runev, Emil Manov, Nadya Naydenova, Mikhail Matveev e Plamen Krastev. Diagnostic Potential of Signal-Averaged Orthogonal Electrocardiography in Acute Myocardial Infarction. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, febbraio 2021. http://dx.doi.org/10.7546/crabs.2021.02.16.

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Hamlin, Alexandra, Erik Kobylarz, James Lever, Susan Taylor e Laura Ray. Assessing the feasibility of detecting epileptic seizures using non-cerebral sensor. Engineer Research and Development Center (U.S.), dicembre 2021. http://dx.doi.org/10.21079/11681/42562.

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This paper investigates the feasibility of using non-cerebral, time-series data to detect epileptic seizures. Data were recorded from fifteen patients (7 male, 5 female, 3 not noted, mean age 36.17 yrs), five of whom had a total of seven seizures. Patients were monitored in an inpatient setting using standard video electroencephalography (vEEG), while also wearing sensors monitoring electrocardiography, electrodermal activity, electromyography, accelerometry, and audio signals (vocalizations). A systematic and detailed study was conducted to identify the sensors and the features derived from the non-cerebral sensors that contribute most significantly to separability of data acquired during seizures from non-seizure data. Post-processing of the data using linear discriminant analysis (LDA) shows that seizure data are strongly separable from non-seizure data based on features derived from the signals recorded. The mean area under the receiver operator characteristic (ROC) curve for each individual patient that experienced a seizure during data collection, calculated using LDA, was 0.9682. The features that contribute most significantly to seizure detection differ for each patient. The results show that a multimodal approach to seizure detection using the specified sensor suite is promising in detecting seizures with both sensitivity and specificity. Moreover, the study provides a means to quantify the contribution of each sensor and feature to separability. Development of a non-electroencephalography (EEG) based seizure detection device would give doctors a more accurate seizure count outside of the clinical setting, improving treatment and the quality of life of epilepsy patients.

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Zakroyeva, A. G., T. V. Zuyeva, E. V. Kuznetzova, I. V. Zhdanova, L. A. Maslova, T. A. Zhuravliova, A. I. Koryakov, Yu S. Kitaieva e E. A. Medvedskiy. Clinical and electrocardiographic signs of the heart arrhythmias. SIB-Expertise, febbraio 2023. http://dx.doi.org/10.12731/er0674.21022023.

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Ma, Lan, Xiaoce Dai e Hongzhuan Sheng. Association of electrocardiographic patterns with cardiovascular outcomes in hypertrophic cardiomyopathy: a meta-analysis and evidence map. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, dicembre 2020. http://dx.doi.org/10.37766/inplasy2020.12.0118.

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Zhang, Ruizhe, e Qingya Xie. A meta-analysis of cholesteryl ester transfer protein(CETP) gene rs708272(G>A) polymorphism in association with cornoary heart disease risk. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, giugno 2023. http://dx.doi.org/10.37766/inplasy2023.6.0021.

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Review question / Objective: To seek the association of the CETP rs708272 polymorphism with CHD.To figure out if the carriers of allele rs708272-A reduce or increase the risk of CHD in comparison with carriers of allele rs708272-G under allele model, dominant model and recessive model. Condition being studied: The inclusion criteria of CHD:(1)the presence of stenosis≥50% in a minimum of one main segment of coronary arteries (the right coronary artery, left circumfex, or left anterior descending arteries) by coronary angiography.(2) symptoms representing angina pectoris, electrocardiographic changes, and elevations of cardiac enzymes based on the criteria of the World Health Organization. (3) a certifed record of coronary artery bypass graft or percutaneous coronary intervention were included in the study.The exclusion criteria of CHD :patients with congenital heart disease, cardiomyopathy, and valvular disease.Controls:the same populations as the cases and specifed to be without CAD, cardiovascular and cerebrovascular diseases, and peripheral atherosclerotic arterial disease.

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Wideman, Jr., Robert F., Nicholas B. Anthony, Avigdor Cahaner, Alan Shlosberg, Michel Bellaiche e William B. Roush. Integrated Approach to Evaluating Inherited Predictors of Resistance to Pulmonary Hypertension Syndrome (Ascites) in Fast Growing Broiler Chickens. United States Department of Agriculture, dicembre 2000. http://dx.doi.org/10.32747/2000.7575287.bard.

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Background PHS (pulmonary hypertension syndrome, ascites syndrome) is a serious cause of loss in the broiler industry, and is a prime example of an undesirable side effect of successful genetic development that may be deleteriously manifested by factors in the environment of growing broilers. Basically, continuous and pinpointed selection for rapid growth in broilers has led to higher oxygen demand and consequently to more frequent manifestation of an inherent potential cardiopulmonary incapability to sufficiently oxygenate the arterial blood. The multifaceted causes and modifiers of PHS make research into finding solutions to the syndrome a complex and multi threaded challenge. This research used several directions to better understand the development of PHS and to probe possible means of achieving a goal of monitoring and increasing resistance to the syndrome. Research Objectives (1) To evaluate the growth dynamics of individuals within breeding stocks and their correlation with individual susceptibility or resistance to PHS; (2) To compile data on diagnostic indices found in this work to be predictive for PHS, during exposure to experimental protocols known to trigger PHS; (3) To conduct detailed physiological evaluations of cardiopulmonary function in broilers; (4) To compile data on growth dynamics and other diagnostic indices in existing lines selected for susceptibility or resistance to PHS; (5) To integrate growth dynamics and other diagnostic data within appropriate statistical procedures to provide geneticists with predictive indices that characterize resistance or susceptibility to PHS. Revisions In the first year, the US team acquired the costly Peckode weigh platform / individual bird I.D. system that was to provide the continuous (several times each day), automated weighing of birds, for a comprehensive monitoring of growth dynamics. However, data generated were found to be inaccurate and irreproducible, so making its use implausible. Henceforth, weighing was manual, this highly labor intensive work precluding some of the original objectives of using such a strategy of growth dynamics in selection procedures involving thousands of birds. Major conclusions, solutions, achievements 1. Healthy broilers were found to have greater oscillations in growth velocity and acceleration than PHS susceptible birds. This proved the scientific validity of our original hypothesis that such differences occur. 2. Growth rate in the first week is higher in PHS-susceptible than in PHS-resistant chicks. Artificial neural network accurately distinguished differences between the two groups based on growth patterns in this period. 3. In the US, the unilateral pulmonary occlusion technique was used in collaboration with a major broiler breeding company to create a commercial broiler line that is highly resistant to PHS induced by fast growth and low ambient temperatures. 4. In Israel, lines were obtained by genetic selection on PHS mortality after cold exposure in a dam-line population comprising of 85 sire families. The wide range of PHS incidence per family (0-50%), high heritability (about 0.6), and the results in cold challenged progeny, suggested a highly effective and relatively easy means for selection for PHS resistance 5. The best minimally-invasive diagnostic indices for prediction of PHS resistance were found to be oximetry, hematocrit values, heart rate and electrocardiographic (ECG) lead II waves. Some differences in results were found between the US and Israeli teams, probably reflecting genetic differences in the broiler strains used in the two countries. For instance the US team found the S wave amplitude to predict PHS susceptibility well, whereas the Israeli team found the P wave amplitude to be a better valid predictor. 6. Comprehensive physiological studies further increased knowledge on the development of PHS cardiopulmonary characteristics of pre-ascitic birds, pulmonary arterial wedge pressures, hypotension/kidney response, pulmonary hemodynamic responses to vasoactive mediators were all examined in depth. Implications, scientific and agricultural Substantial progress has been made in understanding the genetic and environmental factors involved in PHS, and their interaction. The two teams each successfully developed different selection programs, by surgical means and by divergent selection under cold challenge. Monitoring of the progress and success of the programs was done be using the in-depth estimations that this research engendered on the reliability and value of non-invasive predictive parameters. These findings helped corroborate the validity of practical means to improve PHT resistance by research-based programs of selection.

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