Rhythm Categories Research Articles

Electrocardiographic Predictors of Disease Severity, Mortality, and Advanced Ventilatory Support Among Hospitalized COVID-19 Patients: A 2-Year Single- Center Retrospective, Cohort Study From January 2020 to December 2021

INTRODUCTION: For detecting myocardial injury in severe and critical COVID-19, the electrocardiogram (ECG) is neither sensitive nor specific, but in a resource-poor environment, it remains relevant. Changes in the ECG can be a potential marker of severe and critical COVID-19 to be used for predicting not only disease severity but also the prognosis for recovery. METHODS: The admitting and interval ECGs of 1333 COVID-19 patients were reviewed in a 2-year, single-center, retrospective cohort study. Each was evaluated for 29 predefined ECG patterns under the categories of rhythm; rate; McGinn-White and right ventricular, axis, and QRS abnormalities; ischemia/infarct patterns; and atrioventricular blocks before univariate and multivariate regression analyses for correlation with disease severity, need for advanced ventilatory support, and in-hospital mortality. RESULTS: Of the 29 ECG patterns, 18 showed a significant association with the dependent variables on univariate analysis. Multivariate analysis revealed that atrial fibrillation, heart rate greater than 100 beats per minute, low QRS voltage, QTc of 500 milliseconds or greater, diffuse nonspecific T-wave changes, and “any acute anterior myocardial infarction” ECG patterns correlate with disease severity, need for advanced ventilatory support, and in-hospital mortality. S1Q3 and S1Q3T3 increased the odds of critical disease and need for high oxygen requirement by 2.5- to 3-fold. Fractionated QRS increased the odds of advanced ventilatory support. CONCLUSION: The ECG can be useful for predicting the severity and outcome of more than moderate COVID-19. Their use can facilitate rapid triage, predict disease trajectory, and prompt a decision to intensify therapy early in the disease to make a positive impact on clinical outcomes. KEYWORDS: advanced ventilatory support, COVID-19 electrocardiographic predictors, disease severity, in-hospital mortality

The semiotics of silence; or, how differently it was interpreted by Mallarmé and Mandelstam

The article discusses the category of silence and its unique realization in the works of S. Mallarmé and O. Mandelstam. In their search for a new language of the new era, Romantic poets of Europe, and later the Symbolists, promoted the categories of rhythm, suggestiveness, melodiousness, and silence. E. Dmitrieva analyzes Mallarmé’s essays and poems, including ‘A Throw of the Dice’ (which anticipates the poetics of the late 20th c. with its unusual typographic layout), and the poem’s visual interpretation by O. Redon, who decodes its internal meanings with a cryptogram ‘quiet-silence-death.’ The second part of the article is devoted to Mandelstam’s poetry. According to Dmitrieva, the poet’s reputation as a Russian Mallarmé almost certainly originates in the Western studies of Mandelstam’s oeuvre. In order to substantiate the analogy, his scholars often point out the two poets’ fondness for suggestiveness, the magic of words, and the opportunities offered by their liberal combination, seen as a special form of ‘associative symbolism.’ Dmitrieva follows the progression of this method in Mandelstam’s poetry and examines several verses that reveal distinct affinities with Mallarmé.

Predicting Neurologically Intact Survival for Advanced Age Adults After Successful Resuscitation of Out-of-Hospital Cardiac Arrest

We sought to predict survival to hospital discharge with favorable neurologic outcome for advanced age adults (≥65years) after successful resuscitation of non-traumatic out-of-hospital cardiac arrest (OHCA). A retrospective observational cohort analysis was performed using the national Cardiac Arrest Registry to Enhance Survival database from January 1, 2013 to December 31, 2021. All nontraumatic OHCA occurring in advanced age adults who survived to hospital admission were included. The primary outcome was survival with favorable neurologic outcome defined as a cerebral performance category score of 1 or 2 at hospital discharge. Multivariable logistic regression including patient variables (age category, gender, co-morbidities) and OHCA characteristics (location, rhythm category, witnessed status, and who initiated cardiopulmonary resuscitation) were used to predict hospital outcome. 83,574 patients met study inclusion criteria with 19,298 (23.1%) surviving with favorable neurologic outcome. The median age was 75years (interquartile range 69 to 82 years), 58.9% were male, and a majority of events occurred at home (67.3%). Age was found to have a linear, negative association with outcome. Survival with cerebral performance category 1 or 2 ranged from 28.8% in those between the age of 65 to 69years (n=23,161) and 13.7% for those age >90years (n=4,666). The regression model produced outcome probabilities ranging from 2.6% to 80.8% with a cross-validated AUROC of 0.742 (95% confidence interval 0.738 to 0.746) and a Brier score of 0.151. In conclusion, a simple model with basic patient and OHCA characteristics can predict hospital outcomes in advanced age adults with good discrimination and calibration.

Port-access versus sternotomy for treatment of long-standing persistent rheumatic atrial fibrillation combined with mitral valve surgery

Objectives: To compare the efficiency of atrial fibrillation (AF) ablation combined with mitral valve (MV) surgery through port-access with through traditional approach.
 Methods: From July 2019 to October 2021, 81 patients with long-standing persistent rheumatic AF underwent biatrial ablation using monopolar radiofrequency devices combined with MV surgery. Patients were divided into two groups: sternotomy group (n=44) and totally endoscopic surgery (TES) group (n=37). Left atrial reduction was performed in all patients. The postoperative and follow-up results were analyzed and compared between the two groups. The mean follow-up times of the sternotomy and the TES groups were 22.2 ± 6.1 months and 20.3 ± 7.7 months, respectively.
 Results: The perioperative characteristics did not differ between the two groups except that the aortic cross-clamp time and the cardiopulmonary bypass time of the TES group were longer than that of the sternotomy group. One patient in the TES group underwent reoperation. During the follow-up period, one death due to an unknown cause, one stroke for each group, and two patients with prosthetic dysfunction. The rates of atrial rhythm categories at the time of post-operation, discharge, 3-month, 6-month, and 1-year follow-up did not differ between the two groups. At 1-year follow-up, the rates of freedom from AF of the sternotomy group and the TES group were 90.9% and 91.9%, respectively; meanwhile, the rates of sinus rhythm were 86.4% and 86.5%, respectively.[1]
 Conclusions: AF ablation combined with mitral valve surgery can be performed through port-access as safely and effectively as through the traditional approach.

Electrocardiographic predictors of disease severity, mortality, and advanced ventilatory support among hospitalized covid-19 patients: a two year single center retrospective, cohort study

Abstract Funding Acknowledgements Type of funding sources: None. Introduction For detecting myocardial injury in severe and critical COVID-19, the electrocardiogram (ECG) is neither sensitive nor specific; but in a resource-poor environment, it remains relevant. Changes in the ECG can be a potential marker of severe and critical COVID-19 to be used for predicting not only disease severity but also the prognosis for recovery. Methods The admitting and interval ECGs of 1,333 COVID-19 patients were reviewed in a two-year, single-center, retrospective cohort study. Each was evaluated for 29 pre-defined ECG patterns under the categories of rhythm, rate, McGinn-White and RV overload patterns, axis and QRS abnormalities, ischemia/infarct patterns, and AV blocks before univariate and multivariate regression analyses for correlation with disease severity; need for advanced ventilatory support; and in-hospital mortality. Results Of the 29 ECG patterns, 18 showed a significant association with the dependent variables on univariate analysis. Multivariate analysis revealed that atrial fibrillation, HR >100 bpm, low QRS voltage, QTc >500msec, diffuse nonspecific T-wave changes, and "any AMI" ECG patterns correlate with disease severity; need for advanced ventilatory support and in-hospital mortality. S1Q3 and S1Q3T3 increased the odds of critical disease and need for high oxygen requirement by 2.5-3 fold. Fractionated QRS increased odds of advanced ventilatory support. Conclusion The ECG can be useful for predicting the severity and outcome of more than moderate COVID-19. Their use can facilitate rapid triage, predict disease trajectory, and prompt a decision to intensify therapy early in the disease to make a positive impact on clinical outcomes.

Impact of elocution task on the measurements of rhythmic patterns in Chilean Spanish

Abstract In this paper, we put to the test the validity of the theory of isochrony using data from Chilean Spanish. Spanish has been historically classified as syllable-timed, meaning its basic unit of prosody is the syllable. However, recent studies have shown that different methods of elicitation can have a significant effect on rhythm metrics (i.e., Arvaniti 2012). The present study measured a series of rhythm metrics from samples of 30 native Chilean Spanish speakers producing spontaneous speech and reading aloud. Using MANOVA analyses, the study determined that method of elicitation had a significant effect on the metrics: while spontaneous speech tended to produce values indicative of accent-timed rhythm, reading aloud yielded values which placed them closer to the syllable-timed rhythm category. This study helps to contribute to the notion that speech rhythm is not necessarily determined by language, but rather that there are other relevant factors.

Abstract 239: Evaluation Of A Shock Advisory Algorithm In An Automated External Defibrillator Using Real-world Data

Objective: Studies have shown that survival rate can be increased with AED deployment, but delivering a shock to patients who may not need one can be harmful. Thus, it is important to evaluate AED shock advisory algorithms in real-world use. This study reports the retrospective performance from out-of-hospital uses of the Philips SMART Analysis algorithm in the FR3 AED. Methods: A representative sample of 1,619 de-identified patient uses from four emergency medical services agencies in the United States, between 2015 and 2017, were included in this study. In each case, the first analysis by the SMART Analysis algorithm was always extracted, and a second analysis was randomly selected among the subsequent analyses (if any), resulting in a total of 2,739 analyses. All analyses were independently annotated by three clinical experts who were blinded to AED advisories (shock advised/no-shock advised). Based on the annotations, analyses with undeterminable rhythms or without an AED advisory were excluded. The recorded AED advisories were compared against the rhythm annotations. Results: Among the 2,739 analyses, a total of 2,616 (95.5%) were included in this study. Based on the consensus among the experts, there were 12.4% (324/2,616) annotated as shockable rhythms, 84.3% (2,205/2,616) non-shockable and the remaining were intermediate rhythms (benefits of shock are uncertain). The overall sensitivity and specificity (n/N, 90% one-sided LCL) were 96.3% (312/324, 95.0%) and 99.9% (2,202/2,205, 99.8%), respectively. The algorithm performance in each rhythm category is shown in Table 1. Conclusions: This study demonstrates that the Philips SMART Analysis algorithm in FR3 AEDs has a high sensitivity to detect shockable rhythms while maintaining a near 100% specificity for non-shockable rhythms. The algorithm’s real-world performance exceeds the requirements in the American Heart Association (AHA) guidelines and shows the safety and effectiveness of the algorithm.

Alignment of targeted temperature management treatment with patients’ mortality risk for out-of-hospital cardiac arrest

ObjectiveTo examine whether TTM treatment was aligned with predicted mortality risk in patients with resuscitated OHCA during a period when it was a class I guideline-recommended therapy. MethodsWithin the Cardiac Arrest Registry to Enhance Survival for OHCA, we identified adult patients with OHCA who survived to hospital admission and were presumed eligible for TTM. Multivariable models were constructed using pre-hospital variables to predict in-hospital death in patients with shockable and non-shockable rhythms. Within each rhythm category, we divided patients into deciles of predicted mortality risk and examined TTM treatment rates across deciles. ResultsFrom 2013-2019, there were 25,882 successfully resuscitated patients with shockable rhythms and 43,414 patients with non-shockable rhythms presumed eligible for TTM. Of patients with shockable rhythms, predicted in-hospital mortality ranged from 16%–78% in deciles 1–10. TTM treatment increased from 44% in decile 1 to 59% in decile 10 (P for trend < 0.001), but over a third of patients in deciles 4–9 were not treated with TTM. Of patients with non-shockable rhythms, predicted mortality ranged from 48%-95% in deciles 1–10. Although TTM treatment rates increased from 36% in decile 1 to 43% in decile 10 (P for trend 0.003), TTM treatment rates were agnostic to mortality risk (44% to 47%) from decile 2–9. ConclusionTTM treatment patterns were not well-aligned with patients’ mortality risk during a period when it was a guideline-recommended treatment for OHCA. Identifying strategies to better align guideline-recommended treatments with patients’ mortality risk is critical for efforts to improve OHCA survival.

Incidence of stroke in patients with hypertrophic cardiomyopathy in stable sinus rhythm during long-term monitoring

Abstract Background Patients with hypertrophic cardiomyopathy (HCM) are at increased risk of atrial fibrillation (AF) and stroke, especially at an advanced disease stage. To date, however, the incidence and factors associated with cardioembolic events in HCM patients without AF remain unresolved. Purpose To determine the incidence of stroke in HCM patients in whom cardiac rhythm was monitored with a cardiac implantable electronic device (CIED). The association of stroke with left atrial (LA) enlargement was also examined. Methods Retrospective cohort study in an outpatient clinic in a tertiary HCM Referral Center. All consecutive patients diagnosed with HCM and referred for CIED implantation with &amp;gt;16 years at diagnosis and &amp;gt;1 year follow-up post CIED implantation were reviewed. Severe LA dilatation was defined as a LA dimension (LAD) of &amp;gt;48mm at echocardiogram. Based on CIED monitoring, patients were classified as: Pre-existing AF (diagnosed with AF prior to CIED); De novo AF (diagnosed with AF after CIED implantation); Sinus Rhythm (SR): no episodes of AF. Incidence of stroke after CIED implantation was the primary outcome. Results A total of 185 patients (57% men, age: 54±17 years) were implanted with a CIED and were included. Pre-existing AF was present in 72 (36%) patients and de novo AF in 24 (13%); whereas 89 (48%) remained in SR. After 5 [2–9] years, stroke was reported in 19 (10.3%) patients: 7 occurred in patients with pre-existing AF (1.1%/year), 3 in patients with de novo AF (2.2%/year), and 9 in patients with SR (2.3%/year). No difference was captured by CHA2DS2-VASc score among rhythm categories. Patients with AF had larger LAD at baseline. Among patients in SR, those with a LAD&amp;gt;48mm had the greatest risk of stroke (4.8%/year vs 0.5%/year, p&amp;lt;0.01; Hazard Ratio [HR]: 8.56, 95% C.I. 2.03–36.15). At Cox multivariable regression analysis, LA (HR: 1.104, 95%C.I. 1.039–1.173, p=0.001) and AF (HR: 0.310, 95% C.I. 0.102–0.939, p=0.038) were associated with incident stroke. Conclusions In HCM patients with CIED long-term monitoring and no prior history of AF, stroke rates were similar in those with de novo AF or stable sinus rhythm. CHA2DS2-VASc considerably underestimated risk, whereas severe LA dilatation was a powerful predictor of risk, irrespective of AF. Funding Acknowledgement Type of funding sources: None.

Whole-transcriptome sequencing identifies neuroinflammation, metabolism and blood-brain barrier related processes in the hippocampus of aged mice during perioperative period.

AimPerioperative neurocognitive disorders (PND) occur frequently after surgery and anesthesia, especially in aged patients. Previous studies have shown multiple PND related mechanisms in the hippocampus; however, their relationships remain unclear. Meanwhile, the perioperative neuropathological processes are sophisticated and changeable, single period study could not reveal the accurate mechanisms. Thus, multiperiod whole‐transcriptome study is necessary to elucidate the gene expression patterns during perioperative period.MethodsAged C57BL/6 mice were subjected to exploratory laparotomy under sevoflurane anesthesia. Whole‐transcriptome sequencing (RNA‐seq analysis) was performed on the hippocampi from control condition (Con), 30 min (Day0), 2 days (Day2), and 7 days (Day7) after surgery. Gene Ontology/Kyoto Encyclopedia of Genes and Genomes analyses, quantitative real‐time PCR, immunofluorescence, and fear conditioning test were also performed to elucidate the pathological processes and modulation networks during the period.ResultsThrough RNA‐seq analysis, 328, 3597, and 4179 differentially expressed genes (DEGs) were screened out in intraoperative period (Day0 vs. Con), early postoperative period (Day2 vs. Day0), and late postoperative period (Day7 vs. Day2). The involved GO biological processes were divided into 9 categories, and positive‐regulated processes were more than negative‐regulated ones. Seventy‐four transcription factors were highlighted. The potential synaptic and neuroinflammatory pathways were constructed for Neurotransmitter, Synapse and Neuronal alteration categories with 9 genes (Htr1a, Rims1, and Ezh2, etc.). The metabolic and mitochondrial pathways were constructed for metabolism, oxidative stress, and biological rhythm categories with 9 genes (Gpld1, Sirt1, and Cry2, etc.). The blood–brain barrier and neurotoxicity related pathways were constructed for blood–brain barrier, neurotoxicity, and cognitive function categories with 10 genes (Mmp2, Itpr1, and Nrf1, etc.).ConclusionThe results revealed gene expression patterns and modulation networks in the aged hippocampus during perioperative period, which provide insights into overall mechanisms and potential therapeutic targets for prevention and treatment of perioperative central nervous system diseases, such as PND, from the genetic level.

Influence of circadian rhythm habit on academic performance and body mass index among the medical students in Qassim University, Saudi Arabia

Objective: Based on the significance of sleep quality on academic performance among medical students, this research was conducted to determine the influence of sleep circadian rhythm categories and their impact on the academic performance of medical students and relationship to body mass index (BMI). Methods: A cross-sectional self- administered questionnaire was conducted from September to October 2018 at the College of Medicine in Qassim University. The survey was designed to assess their circadian rhythm habit, academic performance and Body mass index (BMI). The circadian rhythm habit was evaluated using the morningness-eveningness questionnaire (MEQ). Results: The analysis of the BMI with MEQ scores revealed a significant relationship between circadian rhythm habit and BMI (p-value 0.016). The majority of normal weight students fall in intermediate category (71%). Among overweight category 20.5% of the participants fall in moderate evening while 10.3% of the students fall in moderate morning. All the definite morning participant were underweight. There were 126 (62.1%) male students, and 77 (37.9%) female students. For academic performance there were 80 students (39.4%) who had “high” performance, 64 students (31.5%) had “good” performance, 32 students (15.8%) had “normal” performance and 2 students (1%) had “low” performance. Conclusion: This study revealed several sleep dimensions such as sleep-wake schedules, and individual circadian rhythms characteristics may be associated to the deranged BMI and academic results achieved by university students.

Categorical rhythms in a singing primate

What are the origins of musical rhythm? One approach to the biology and evolution of music consists in finding common musical traits across species. These similarities allow biomusicologists to infer when and how musical traits appeared in our species1. A parallel approach to the biology and evolution of music focuses on finding statistical universals in human music2. These include rhythmic features that appear above chance across musical cultures. One such universal is the production of categorical rhythms3, defined as those where temporal intervals between note onsets are distributed categorically rather than uniformly2,4,5. Prominent rhythm categories include those with intervals related by small integer ratios, such as 1:1 (isochrony) and 1:2, which translates as some notes being twice as long as their adjacent ones. In humans, universals are often defined in relation to the beat, a top-down cognitive process of inferring a temporal regularity from a complex musical scene1. Without assuming the presence of the beat in other animals, one can still investigate its downstream products, namely rhythmic categories with small integer ratios detected in recorded signals. Here we combine the comparative and statistical universals approaches, testing the hypothesis that rhythmic categories and small integer ratios should appear in species showing coordinated group singing3. We find that a lemur species displays, in its coordinated songs, the isochronous and 1:2 rhythm categories seen in human music, showing that such categories are not, among mammals, unique to humans3.

Abstract 254: High Shock Efficacy and Algorithm Performance for a 150J Biphasic Waveform AED Used by Lay and BLS Responders During Out-of-hospital Cardiac Arrest

Introduction: Effective AED defibrillation of out of hospital cardiac arrest (OHCA) depends on the safe and effective identification of shockable rhythms, and on delivery of effective defibrillation energy. This report summarizes rhythm detection performance and shock efficacy during OHCA uses of Philips HeartStart Home and OnSite AEDs using non-escalating 150 J therapy. Methods: A convenience sample of 185 OHCA AED patient uses were reviewed by clinical experts. All analysis periods that resulted in AED rhythm advisories (Shock Advised or No Shock Advised) were annotated. Shockable rhythm categories include VF and polymorphic VT/flutter. Non-Shockable rhythm categories include normal sinus rhythm, other rhythms (e.g., atrial fibrillation/flutter, bradycardia, SVT, idioventricular, bundle branch block), and asystole. Intermediate rhythms (benefits of defibrillation are limited or uncertain) were not included. Post-shock rhythm was categorized as shockable, non-shockable, or undeterminable (rhythms corrupted by CPR artifact or pads removal within 5-s of shock delivery). Shock success was defined as conversion to a non-shockable rhythm within 5-s post-shock. Results: A total of 487 analysis periods resulted in AED rhythm advisories, with 175 annotated as Shockable and 312 Non-shockable. Sensitivity and specificity (n/N, Exact 95% CI) were 97.7% (171/175, 94.3%, 99.4%) and 100% (312/312, 98.8%, 100.0%) respectively. A total of 165 shocks were delivered to 100 patients with 5 undeterminable post-shock rhythms. The remaining 160 shocks were delivered to 156 Shockable rhythm episodes. All shock efficacy was 96.9% (155/160, 92.9%, 99.0%): 150 episodes converted to non-shockable rhythms after one shock (96.2% (150/156, 91.8%, 98.6%)); 154 after two shocks (98.7% (154/156, 95.4%, 99.8%)); and 155 after three shocks, the first two of which were undeterminable (99.4% (155/156, 96.5%, 100.0%)). The remaining episode had a failed first shock, followed by an undeterminable second shock, which was the last shock of the use. Conclusion: For these 150J fixed-energy AEDs, OHCA defibrillation is safe (100% specificity), and effective (97.7% sensitivity; 96.2% single shock effectiveness; 98.7% after two shocks; 99.4% after three shocks).

Rhythm: Similar Structure in Birdsong and Music Gives Neuroethological Insight

Analysis of the rhythm structure of the songs of two songbird species and corpora of human music finds compelling similarities in rhythm categories and the effects of tempo. This gives insight into the neuroethological basis of song and music production.

Categorical Rhythms Are Shared between Songbirds and Humans

Rhythm is a prominent feature of music. Of the infinite possible ways of organizing events in time, musical rhythms are almost always distributed categorically. Such categories can facilitate the transmission of culture-a feature that songbirds and humans share. We compared rhythms of live performances of music to rhythms of wild thrush nightingale and domestic zebra finch songs. In nightingales, but not in zebra finches, we found universal rhythm categories, with patterns that were surprisingly similar to those of music. Isochronous 1:1 rhythms were similarly common. Interestingly, a bias toward small ratios (around 1:2 to 1:3), which is highly abundant in music, was observed also in thrush nightingale songs. Within that range, however, there was no statistically significant bias toward exact integer ratios (1:2 or 1:3) in the birds. High-ratio rhythms were abundant in the nightingale song and are structurally similar to fusion rhythms (ornaments) in music. In both species, preferred rhythms remained invariant over extended ranges of tempos, indicating natural categories. The number of rhythm categories decreased at higher tempos, with a threshold above which rhythm became highly stereotyped. In thrush nightingales, this threshold occurred at a tempo twice faster than in humans, indicating weaker structural constraints and a remarkable motor proficiency. Together, the results suggest that categorical rhythms reflect similar constraints on learning motor skills across species. The saliency of categorical rhythms across humans and thrush nightingales suggests that they promote, or emerge from, the cultural transmission of learned vocalizations. VIDEO ABSTRACT.

Survival After In-Hospital Cardiac Arrest in Critically Ill Patients: Implications for COVID-19 Outbreak?

The coronavirus disease 2019 (COVID-19) outbreak is placing a considerable strain on U.S. healthcare systems by requiring both significant acute resources and endangering healthcare team members th...

P204 Automated detection of atrial fibrillation based on stationary wavelet transform and artificial neural network targeted for embedded system-on-chip technology

Abstract Stroke is one of the most severe cardiovascular disease which can potentially cause permanent disability. Atrial Fibrillation (AF) is one of the major risk factors of stroke that can be detected from electrocardiogram (ECG) monitoring. Objective This study proposed an AF detection algorithm based on stationary wavelet transform (SWT) and artificial neural network (ANN) for screening purpose. The algorithm is aimed for embedded System-on-Chip (SoC) technology deployment as a standalone AF classifier for community in rural area where the internet infrastructure may not well established. Methods After standard ECG signal pre-processing, SWT is applied to filtered ECG and produces 12 sets of primary features in time-frequency domain. The power spectral density (PSD) and log energy entropy (LogEn) were calculated from these 12 sets of primary features, to measure atrial activity fall in frequency range of 4 to 9 Hz, and the randomness of an ECG signal caused by AF, respectively. Finally, the ANN classifier recognizes the pattern of AF based on high atrial activity and randomness of ECG signal. Algorithm exploration is carried out to determine the optimum parameter value which can yield the best classification and suitable to be implemented in embedded SoC technology for real-time computation performance. ECG training and testing datasets of the proposed AF detection algorithm were extracted from MIT-BIH Atrial Fibrillation Database which consists of 23 ECG record with each record contains a 10 hours ECG data. Results AF detection accuracy is 95.3% which was able to classify an ECG signal into categories of AF, sinus rhythm, and other arrhythmia. Conclusion The proposed AF detection algorithm based on combination of SWT and ANN can achieve high accuracy and is suitable to be implemented as a standalone AF classifier based on embedded SoC technology targeted for early detection of AF in the community.

Архітектоніка і темп прес-марафону президента України В. Зеленського

The main schemes of architectonics, which is a structural base of television action, general outward form of construction and interrelation of its parts, their correlation to each other are determined. The pattern of application of archetypical principle of human perception of stories from Aristotle’s first works to use of communication technologies of proportionality of journalist’s text construction by contemporary TV reporters and screenwriters are researched. The novelty of the study is in an attempt to segregate clearly the notions of script composition from architectonics, the essence of difference of priority of the rhythm category namely for architectonics. The objective of the study is to determine the basic schemes of architectonics which is the structural basis of television action, the general appearance and interrelation of its parts, their correlation with each other. Such empirical research methods as observation, abstraction and analysis have been applied. The result of the study was the analysis of television scripts of various programs, definition of main components of architectonics – its beginning, middle and end parts, as well as presentation of structural diagrams of script architectonics. It is emphasized that the action in the scenario should be organized in such way that the dramatic tension curve and the viewer interest curve are being evenly raised from the beginning to the end of the spectacle. The scenario construction of a record-breaking press-marathon with the President of Ukraine Volodymyr Zelenskyi that took place on October 10, 2019 in the capital of Ukraine at Kyiv Food Market was first studied in the scientific literature.

The Sociology of Forms

Caroline Levine's Forms is a study of form as much as a sociology of forms—a tracking of the many ways that they relate to one another or are conjoined in creative works. While offering an extended meditation on the formal categories of whole, rhythm, hierarchy, and network as they are manifest in such works, the book organizes this meditation under the separate category of collision. Other terms are substituted for it—overlap, encounter, interaction—but the metaphoric intent remains the same. If the book seeks to sharpen our understanding of four major forms as universal elements of texts and social experience, its other interest is in honing our awareness of the complex ways these forms collide within and through narrative. his interest spurs Levine to look to sociological theory for examples of how to think about this complexity, a tradition that dates back at least to the time when György Lukács was writing under the influence of Georg Simmel, around 1910. Here I will show how her conversation with sociology follows yet another familiar path: the literary critic's borrowing of conclusions or concepts from sociologists while eschewing the methods and theoretical models through which these conclusions or concepts are arrived at and understood. In particular, I consider the consequences of drawing on sociological thinking to make general claims about complex relations while excluding some of the methods by which generalizability is established and problematized in the social sciences. This exclusion marks a fundamental disciplinary divide that sociologically inclined literary critics continue, sometimes out of habit, sometimes out of perceived necessity, to preserve.

THEORY AND PRACTICE OF RHYTHM IN THE PROFESSIONAL TRAINING SYSTEM FOR ATHLETES AND TEACHING STAFF

Background . Rhythm is important for the implementation of all processes as in nature and in living organisms. It organizes motor human activity making it more productive and rational. On teaching working and sports motions the process of the impellent work correct rhythm assimilation plays an important role because it determines the movement performance optimum that is shown in its automation process reduction. As a result, man’s physical strength and nervous energy are saved. Rhythm category acquires a special status for the physical training specialist. All his activity including the motor component depends on the rhythm. The aim of the research is to study the physiology of rhythm and justify the more efficient training process for future teachers and coaches. Methods . The following theoretical research methods were used: the abstract and axiomatic methods, analysis and synthesis, induction and deduction, idealization, comparison and generalization. Results. As a result of study of materials from the natural sciences, numerology, psychology, music, cybernetics, synergetic, physiology, was found that the change of different states, as in nature and in living organisms, is an undulating rhythmic character. Physiological basis of the same rhythm is dynamic change excitation and inhibition processes occurring in the central nervous system. In this paper features of rhythm were identified. To accelerate the assimilation of motor action rational rhythm it is necessary to develop a sense of rhythm which is successfully formed in during the musical-motor activities. Conclusions. For today the study of the rhythm phenomenon in professional preparation on physical education and sport, in our opinion, requires the further study. Adding exercises involving certain motor skills elements similar in rhythmic structure with professional and technical actions to the coaches and teachers education and the competitive technology formation should be indisputable.