scholarly journals Diagnostic Accuracy and Usability of the ECG247 Smart Heart Sensor Compared to Conventional Holter Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Edvard Liljedahl Sandberg ◽  
Bjørnar Leangen Grenne ◽  
Trygve Berge ◽  
Jostein Grimsmo ◽  
Dan Atar ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Heart Rhythm ◽  
Diagnostic Tools ◽  
Test Duration ◽  
Test Results ◽  
Holter Monitor ◽  
Heart Rhythm Disorders ◽  
Rhythm Analysis ◽  
Parallel Tests

Background. Heart rhythm disorders, especially atrial fibrillation (AF), are increasing global health challenges. Conventional diagnostic tools for assessment of rhythm disorders suffer from limited availability, limited test duration time, and usability challenges. There is also a need for out-of-hospital investigation of arrhythmias. Therefore, the Norwegian ECG247 Smart Heart Sensor has been developed to simplify the assessment of heart rhythm disorders. The current study aimed to evaluate the diagnostic accuracy and usability of the ECG247 Smart Heart Sensor compared to conventional Holter monitors. Methods. Parallel tests with ECG247 Smart Heart Sensor and a Holter monitor were performed in 151 consecutive patients referred for out-of-hospital long-term ECG recording at Sorlandet Hospital Arendal, Norway. All ECG data were automatically analysed by both systems and evaluated by hospital physicians. Participants were asked to complete a questionnaire scoring usability parameters after the test. Results. A total of 150 patients (62% men, age 54 (±17) years) completed the study. The ECG quality from both monitors was considered satisfactory for rhythm analysis in all patients. AF was identified in 9 (6%) patients during the period with parallel tests. The diagnostic accuracy for automatic AF detection was 95% (95% CI 91–98) for the ECG247 Smart Heart Sensor and 81% (95% CI 74–87) for the Holter system. The proportion of false-positive AF was 4% in tests analysed by the ECG247 algorithm and 16% in tests analysed by the Holter algorithm. Other arrhythmias were absent/rare. The system usability score was significantly better for ECG247 Smart Heart Sensor compared to traditional Holter technology (score 87.4 vs. 67.5, p < 0.001 ). Conclusions. The ECG247 Smart Heart Sensor showed at least comparable diagnostic accuracy for AF and improved usability compared to conventional Holter technology. ECG247 allows for prolonged monitoring and may improve detection of AF. This trial is registered with https://clinicaltrials.gov/ct2/show/NCT04700865.

Abstract 130: In Patients Referred for a Stress Echo-cardiogram, Baseline Left Bundle Branch Block is Associated with Increased Mortality Independent of Stress Test Results or History of Heart Failure

2015 ◽  
Vol 8 (suppl_2) ◽  
Author(s):  
Neil Yager ◽  
Tina Ramineni ◽  
Salem Badr ◽  
Adam Parker ◽  
Lulu Zhang
Keyword(s):  
Heart Rate ◽  
Stress Test ◽  
Test Duration ◽  
Test Results ◽  
Target Heart Rate ◽  
Long Term Outcomes ◽  
Double Product ◽  
Bundle Branch Block ◽  
History Of

Background: The role of asymptomatic LBBB in long-term survival for patients without heart disease remains unclear. Therefore, we perform a retrospective review to compare the roles of heart failure and conduction dysfunction in long-term outcomes. Methods: Records of 398 consecutive patients referred for chest pain or dyspnea evaluation with stress echocardiogram at a single tertiary care center were reviewed. Reasons for stress test, demographic data, including age and gender, co-morbidities including cardiovascular disease (CAD), peripheral vascular disease (PVD), hypertension (HTN), and diabetes mellitus (DM), and use of ace-inhibitors and beta-blockers were collected. Stress test results including maximal heart rate, duration of test, duration of recovery, double product and ischemia shown by echo were recorded. ANOVA, chi-square, and logistic regression analyses were performed. The mean follow-up length was 76+/-18 months. The study was approved by IRB. Results: Left bundle branch block (LBBB) was observed in 11 of 398 patients (2.7%). LBBB was not associated with history of CAD and CAD risk factors or equivalents: HTN, DM, PVD, or smoking. There was a trend towards a 3x higher mortality rate for patients with LBBB than for patients without LBBB and for patients with CHF (p=0.2) Results from the stress test were analyzed. There was no significant difference in age or gender. Patients with LBBB had a lower test duration, lower rates of ischemia by ECHO, and a lower double product than patients without LBB and with CHF (p<0.05). Furthermore, patients with LBBB had trend towards a lower time to recovery and a greater percentage of patients with LBBB reached target heart rate than patients with CHF (p<0.05). The highest mortality was observed in patients with LBBB and no evidence of stress-induced ischemia (2 out of 7 patients, p=0.021). Discussion: Traditionally, CHF has thought to be one of the single most important factors determining long-term outcomes in patients referred for stress-testing. However, our study found the highest mortality to be observed in patients with LBBB and no evidence of stress-induced ischemia. Additionally, significantly more patients with LBBB reached target heart rate and had shorter duration of recovery. Overall, the stress test results suggest LBBB to contribute to higher mortality by mechanisms independent of its impact on ventricular function.

scholarly journals The importance of sleep apnea index determination using 24h ECG analysis in patients with heart rhythm disorders

2014 ◽  
Vol 71 (11) ◽  
pp. 1049-1054
Author(s):  
Aleksandra Grdinic ◽  
Zoran Stajic ◽  
Aleksandar Grdinic ◽  
Zarko Vucinic ◽  
Violeta Randjelovic-Krstic ◽  
...  
Keyword(s):  
Sleep Apnea ◽  
Case Series ◽  
Heart Rhythm ◽  
Software Systems ◽  
Ecg Analysis ◽  
Heart Rhythm Disorders ◽  
History Of ◽  
Possible Cause

Background/Aim. A possible cause of malignant heart rhythm disorders is the syndrome of sleep apnea (periodic cessation of breathing during sleep longer than 10 seconds). Recent 24h ECG software systems have the option of determination ECG apnea index (AI) based on the change in voltage of QRS complexes. The aim of the study was to determine the significance of AI evaluation in routine 24-hour Holter ECG on a group of 12 patients. Methods. We presented a total of 12 consecutive patients with previously documented arrhythmias and the history of breathing disorders during night. They were analyzed by 24 h ECG (Medilog AR 12 plus Darwin), that is able to determine AI. Results. We presented a case series of 12 patients, 8 men and 4 women, mean age 58.75 years and the average AI 5.78. In the whole group there was a trend of increasing prevalence of complex rhythm disorders with increasing of AI and increased frequency of arrhythmias in the night phase vs day phase. Conclusion. Determination of AI using routine long term (24 h) ECG analysis is important because sleep apnea can be successfully treated as an etiological or contributing factor of arrhythmias.

scholarly journals Supraventricular tachycardia: modern methods of diagnosis and treatment (мethodical recommendations)

2021 ◽  
pp. 7-17
Author(s):  
O. S. Sychov ◽  
A. O. Borodai ◽  
G. M. Solovyan ◽  
T. V. Mikhaleva
Keyword(s):  
Antiarrhythmic Drugs ◽  
Heart Rhythm ◽  
Term Therapy ◽  
Functional Diagnostics ◽  
Basic Principles ◽  
Heart Rhythm Disorders ◽  
Long Term Therapy ◽  
Supraventricular Tachycardias ◽  
Methods Of Treatment

Methodical recommendations are devoted to one of the most pressing problems of cardiology – paroxysmal heart rhythm disorders in clinical practice. The recommendations consider the basic principles of determining supraventricular tachycardias (SVT) and their electrophysiological mechanisms. The clinic and features of ECG diagnostics of separate forms of tachycardias are stated. Emergency care and long-term therapy for SVT with narrow and wide QRS complexes are presented. Methods of treatment and algorithms for the management of patients with SVT in accordance with the updated in 2019 recommendations of the European Association of Cardiologists for the management of patients with SVT, antiarrhythmic drugs and their use, the principles of catheter treatment of tachycardia. Recommendations are addressed to cardiologists, therapists, doctors of functional diagnostics, general practitioners and family medicine, interns.

Parents' long-term adjustment to the genetic test results of minors at risk for Long QT Syndrome

2004 ◽  
Author(s):  
K. S. W. H. Hendriks ◽  
F. J. M. Grosfeld ◽  
A. A. M. Wilde ◽  
J. van den Bout ◽  
I. M. van Langen ◽  
...  
Keyword(s):  
At Risk ◽  
Long Qt Syndrome ◽  
Genetic Test ◽  
Test Results ◽  
Long Qt ◽  
Genetic Test Results ◽  
Qt Syndrome

The desperate plea of women with the nutcracker syndrome

Phlebologie ◽  
2010 ◽  
Vol 39 (02) ◽  
pp. 104-111
Author(s):  
J. L. Villavicencio
Keyword(s):  
Renal Vein ◽  
Imaging Techniques ◽  
Left Renal Vein ◽  
Diagnostic Tools ◽  
Nutcracker Syndrome ◽  
Treatment Techniques ◽  
Children And Young Adults ◽  
Good Number ◽  
Pelvic Congestion

Summary Objective: To increase awareness on the severe impact of the nutcracker syndrome in women with undiagnosed disease. Patients and methods: We reviewed the medical literature and analyzed six representative series with 73 patients with nutcracker syndrome. Women with left flank pain, dyspareunia, dysuria, dysmenorrhea, micro- or macrohaematuria and pelvic congestion symptoms, should be carefully investigated for evidence of meso aortic left renal vein compression. A good number of our colleagues do not believe in the existence of the nutcracker syndrome and send these patients in a long pilgrimage in search of someone who can help them to get relief to their pain. New and improved imaging techniques can assist in the diagnosis but retrograde reno-gonadal phlebography and renocaval gradient are the most reliable diagnostic tools. Results: Among an assortment of treatment techniques, renal vein transposition and endovenous stenting were the two most commonly used procedures. There are no long term studies on renal vein stenting in children and young adults. Its use in these cases should be carefully considered. The nutcracker syndrome may present with pelvic congestion symptoms and its diagnosis missed. The patient's age, severity of symptoms and haemo dynamic renal studies should guide the treatment. Conclusion: An increased awareness of the existence of the nutcracker syndrome may prevent many unfortunate undiagnosed women from spending many months and often years of suffering.

Clinical and Morphological Features of Myocardial Damage and the Course of Fulminant Myocarditis on the Background of СOVID-19, Diagnosis and Treatment Tactics

2020 ◽  
Vol 75 (5S) ◽  
pp. 414-425
Author(s):  
Olga S. Oynotkinova ◽  
Evgenii L. Nikonov ◽  
Oleg V. Zayratyants ◽  
Elena V. Rzhevskaya ◽  
Evgenii V. Krukov ◽  
...  
Keyword(s):  
Myocardial Dysfunction ◽  
Myocardial Damage ◽  
Heart Rhythm ◽  
Microvascular Dysfunction ◽  
Symptomatic Treatment ◽  
Clinical Situation ◽  
Diagnosis And Treatment ◽  
Screening Tests ◽  
Fulminant Myocarditis ◽  
Heart Rhythm Disorders

In a review article based on my own clinical experience of managing patients with acute myocardial injury and fulminant myocarditis, taking into account expert recommendations on the clinical treatment of myocardial damage associated with novel coronavirus infection a National clinical geriatric medical research center, division of cardiovascular diseases, the Chinese geriatrics society, Department of cardiology, Beijing Medical Association and European clinics discusses the pathogenesis, diagnosis and treatment of myocardial damage and FM patients, infected with SARS-CoV-2 in the context of the COVID-19 pandemic. Clinical features and diagnostic criteria are presented, including screening tests of markers of myocardial damage in the form of a highly sensitive troponin test, a natriuretic peptide. The article discusses in detail the pathogenesis and mechanisms of myocardial damage, including immune mechanisms, cytokine storm, systemic inflammation with macro- and microvascular dysfunction and the development of myocardial dysfunction with acute heart failure, hypotension, cardiogenic shock and/or life-threatening heart rhythm disorders caused by hypoxia and metabolic disorders at the cellular level. Features of the clinical course of fulminant myocarditis in infected patients (SARS-CoV-2) in the conditions of the COVID-19 pandemic are presented. For the first time, a detailed histo-morphological analysis of pathological myocardial injuries and complications is presented on the basis of unique autopsy material on post-mortem diagnostics of various pathoanatomic autopsies of those who died from COVID-19 in Moscow. Based on the clinical, functional and morphological material, the Protocol of etiopathogenetic treatment is presented. The basis of standard therapy is considered antiviral drugs, immunoglobulin G, the use of monoclonal antibodies to interleukin-6, anticoagulants, glucocorticoids, depending on the clinical situation, cardioprotectors and symptomatic treatment are recommended to maintain the heart, which in combination can achieve a certain clinical effectiveness. As adjuvant cardioprotective targeted therapy, the sodium salt of phosphocreatine is considered in order to preserve the myocardium, maintain its contractility and vital activity.

The Implementation Of Make A-Match Model In Social Science Learning To Improve Student Learning Outcomes In Class IV SDN 115 Manado

2019 ◽  
Vol Volume 2 Nomor 2 ◽  
Keyword(s):  
Social Science ◽  
Learning Outcomes ◽  
Teaching And Learning ◽  
Science Learning ◽  
Design Activity ◽  
Test Results ◽  
Match Model ◽  
Fourth Grade Students ◽  
Improve Student Learning

There is a tendency in the education field today to return to the idea that children will learn better if the environment is created naturally. Learning will be more meaningful if children "experience" themselves what they are learning, not 'knowing' it. Target-oriented learning of material mastery proves to be successful in short-term 'remembering' competitions, but fails to equip children to solve problems in long-term life. The problems that would to be studied in this study are: (a) how is the improvement of Social Science learning outcomes by applying the Make A-Match Model to it? (b) how does the Make A-Match Model apply towards the learning motivation? The objectives of this study are: (a) want to know the improvement in Social Science learning achievement after the implemetation of the Make A-Match Model. (b) want to know the effect of Make A-Match Model towards students’ motivation of the subject after it is applied. This research is used two rounds of action research. In each round consists of four stages, namely: design, activity and observation, reflection and revision. The target of this research is the fourth grade students of Mongodow. The data obtained in the form of formative test results, observation sheets of teaching and learning activities. From the results of analysts obtained student achievement has increased from cycle I to cycle II namely, cycle I (65%), cycle II (83%). The conclusion of this research is the Make A-Match Model of Social Science learning could positively influence the motivation of learning of central students, and this learning model could be used as an alternative to Social Science learning.

Long Term Field Test Results of Experimental EPDM and PUF Roofing

1990 ◽  
Author(s):  
David M. Bailey ◽  
Stuart D. Foltz ◽  
Myer J. Rosenfield
Keyword(s):  
Field Test ◽  
Test Results ◽  
Term Field

Experiences in Field Testing a Variety of Aeration Equipment in Sweden and in the U.S.A. by Offgas Analysis

1989 ◽  
Vol 21 (10-11) ◽  
pp. 1421-1429
Author(s):  
D. T. Redmon ◽  
W. C. Boyle ◽  
B. G. Hellstrom
Keyword(s):  
Oxygen Transfer ◽  
State Of The Art ◽  
Field Testing ◽  
Analysis Procedure ◽  
Test Results ◽  
Transfer Testing ◽  
Parallel Tests

The background and theory of the offgas analysis procedure used in oxygen transfer testing of diffused aeration tanks is reviewed. Correlation of this method with other applicable procedures in parallel tests is reported. State-of-the-art equipment and accessories are described. Advantages of the procedure are identified, as are precautionary considerations regarding its use. Applications considered appropriate for its employment are delineated. Experience and test results in both Sweden and the U.S.A. on a variety of aeration devices are disclosed.

Nursing Diagnosis for Potential Organ Donors: Accuracy Study

2021 ◽  
pp. 105477382110194
Author(s):  
Luciana Nabinger Menna Barreto ◽  
Éder Marques Cabral ◽  
Marina Raffin Buffon ◽  
Juliana Elenice Pereira Mauro ◽  
Lisiane Pruinelli ◽  
...  
Keyword(s):  
Heart Rate ◽  
Diagnostic Accuracy ◽  
Medical Records ◽  
Heart Rhythm ◽  
Organ Donors ◽  
Predictive Capacity ◽  
Nursing Diagnosis ◽  
Accuracy Study ◽  
Altered Blood ◽  
Accuracy Data

The objective was to analyze the diagnostic accuracy of Impaired physiological balance syndrome in potential brain-dead organ donors. It is a study of diagnostic accuracy. Data was retrospectively collected from 145 medical records through the filling out of an instrument containing 25 indicators of the nursing diagnosis (ND). Descriptive and inferential statistics were used. The prevalence of the ND was 77 (53.1%). The indicator with the best measures of accuracy was altered heart rate. Therefore, it has the best predictive capacity for determining the ND. It was identified that the absence of the indicators altered heart rate, hyperglycemia, and altered blood pressure is associated with the absence of the ND, while the presence of the indicators hyperthermia, hypothermia, and altered heart rhythm is associated with the presence of the ND. Accurate indicators will assist in diagnostic inference and the interventions and results will have greater chances of targeting and effectiveness.

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