Electrocardiogram classification algorithm based on CvT-13 and multimodal image fusion / 生物医学工程学杂志

Electrocardiogram (ECG) signal is an important basis for the diagnosis of arrhythmia and myocardial infarction. In order to further improve the classification effect of arrhythmia and myocardial infarction, an ECG classification algorithm based on Convolutional vision Transformer (CvT) and multimodal image fusion was proposed. Through Gramian summation angular field (GASF), Gramian difference angular field (GADF) and recurrence plot (RP), the one-dimensional ECG signal was converted into three different modes of two-dimensional images, and fused into a multimodal fusion image containing more features. The CvT-13 model could take into account local and global information when processing the fused image, thus effectively improving the classification performance. On the MIT-BIH arrhythmia dataset and the PTB myocardial infarction dataset, the algorithm achieved a combined accuracy of 99.9% for the classification of five arrhythmias and 99.8% for the classification of myocardial infarction. The experiments show that the high-precision computer-assisted intelligent classification method is superior and can effectively improve the diagnostic efficiency of arrhythmia as well as myocardial infarction and other cardiac diseases.

Follow Up Study (Short Term and Long Term Outcome) in Patients with Cerebral Venous Sinus Thrombosis after Treatment and Discharge from Hospital

Introuction: Study aimed to follow up the cases of cerebralvenous thrombosis over short term and long term aftertreatment and discharge from hospital.Material and methods: This prospective observational studywas carried out in the department of Neurology, at Bombayhospital Indore. 75 patients included in this study, who wereadmitted between July 2010 to June 2013. Patients of all agegroups and both sexes were included in this study. Patientswere followed up to 12 months after treatment and dischargefrom the hospital.Result: Total 75 patients were taken. M: F ratio was 1:1.4 andmean age was 36 yrs. The short term outcome and response tothe treatment were good and comparable.Conclusion: Overall prognosis of cerebral venous thrombosisis good in terms of recovery, low rate of neurological sequelae,low risk of recurrence and long term follow up. Chronicanticoagulant treatment is necessary to prevent recurrence ofthrombosis.

Exploring Neuropsychiatric Interphase in Perinatal Period – A Case Series

Perinatal period spans from conception till one-year post-partum. Pregnancy and post-partum ischaracterised by significant biological changes in a woman’s body including changes in blood pressure,blood volume, coagulability of blood and changes in immunity causing onset or relapse of certain medicaland neurological conditions, which can face diagnostic and treatment challenges during this period. We aimto present a series of 3 cases which presented with psychiatric symptoms but on further evaluation werefound to have neurological diagnosis – Cavernous Venous Thrombosis [CVT], Posterior ReversibleEncephalopathy Syndrome [PRES] & Tuberculoma.

Fiabilidad y validez factorial del instrumento para medir calidad de vida en el trabajo "CVT-Gohisalo" (versión breve) / Reliability and the Factorial Validity of the Instrument for Measuring Quality of Work Life "CVT-GOHISALO" (brief)

Resumen Objetivo: Validar el cuestionario CVT-Gohisalo versión breve para su uso en trabajadores ecuatorianos. Diseño: Análisis factorial exploratorio del cuestionario CVT-Gohisalo con una población de trabajadores ecuatorianos. Métodos: La población se constituyó con 400 sujetos que laboran en diversos frentes laborales de la economía formal en Ecuador. El análisis estadístico se basó en la determinación del coeficiente alfa de Cronbach, porcentaje de varianza explicado y los valores Eigen de cada ítem de la escala. Resultados: El coeficiente α de Cronbach del cuestionario en general fue de 0,911, de manera individual la mayoría de los 7 factores del cuestionario obtuvieron valores satisfactorios; los que presentaron alfa de Cronbach por debajo de 0,7 fueron: integración al puesto de trabajo, que califica como adecuada con déficits (α = 0,6), e igualmente seguridad en el trabajo, cuya calificación se dio como inadecuada (α = 0,5). Conclusiones: Es posible utilizar la versión breve del Cuestionario CVT-Gohisalo con fines de investigación y de evaluación en las empresas en Ecuador.

Abstract Objective: To validate the questionnaire CVT-GOHISALO - short version for use in Ecuadorian workers. Design: Exploratory factor analysis of the questionnaire CVT-GOHISALO with a population of Ecuadorian workers. Methods: The population was composed of 400 subjects who work in various labor shifts in the formal economy in Ecuador. The statistical analysis was based on the determination of the Cronbach's alpha coefficient, proportion of variance explained and eigen values of each item of the scale. Results: The Cronbach's α coefficient of the questionnaire in general was of 0.911. Individually, most of the 7 factors of the questionnaire obtained satisfactory values; the ones that present a Cronbach's alpha coefficient below 0.7 were, "Integration to the job", which qualifies as appropriate with deficits (α =0.6) and "Job reliability", which qualifies as inadequate (α =0.5). Conclusions: It is possible to use the questionnaire CVT-GOHISALO - short version for the purposes of research and evaluation in firms in Ecuador.

Association of Anemia with Cerebral Venous Thrombosis in Puerperium and its Pattern of Recovery

Background: Anemia is often considered to be a risk factor for cerebral venous thrombosis (CVT). We investigated the association between anemia and CVT. Methods:  42 postpartum /puerperal females were studied retrospectively for various factors like anemia, conscious level at admission, place of delivery (home or hospital) and their neurological sequel was measured at the time of discharge. Platelets counts were also noted (to rule out thrombocytosis). Anemia was defined according to World Health Organization criteria: non- pregnant women hemoglobin < 7.5 gm/dl, pregnant women < 6.9gm/dl. Modified Rankin Score (mRS) was taken as a scale for recovery. Results: Patients with CVT were younger (mean age 28). Anemia was more frequent in 32.7%. Hemoglobin as a continuous variable was inversely associated with CVT. Platelets counts, BT CT were normal hence no thrombocytosis was seen. No gross increase in WBC count was noted indicating absence of sepsis (puerperal). Outcome was favorable in 83% patients. N=4 (7%) patients died. Conclusions: We concluded that there is a positive correlation with increased levels of HbA1c and FBS (p˂0.001) in diabetic postmenopausal women and knee osteoarthritis. we found a significant association of severe anemia and CVT in patients of CVT of non-infectious origin, although the exact mechanism leading to hypercoagulability remains unclear and had poor prognosis.

Fuel consumption efficiency of an agricultural tractor equipped with continuously variable transmission / Eficiência no consumo de combustível de um trator agrícola equipado com transmissão continuamente variável

ABSTRACT: The correct choice of modern power transmissions can help farmers decrease production costs. The following research aimed to assess fuel consumption efficiency of an agricultural tractor equipped with continuously variable transmission, at different travel speed and load levels applied on the tractor drawbar. Standard procedure has been applied considering six load levels (30; 40; 50; 60; 70 and 80% of Q0) by means of breaking with a dynamometer car instrumented in a concrete test track, at three travel speeds (5.16; 7.29 and 10.48km h-1). Throughout the experiment, engine speed, traction force and hourly fuel consumption were monitored. The results indicated that there was an average increase of 2.67; 2.82; and 2.61L h-1 in the hourly fuel consumption for each 10% increase in the load level on the tractor, for travel speed of 5.16; 7.29 and 10.48km h-1, respectively. In general, the specific fuel consumption of the tractor decreased as the load levels and the travel speeds were increased.

RESUMO: A escolha correta de modernas transmissões de potência pode auxiliar os agricultores a diminuírem os custos de produção. Este trabalho teve como objetivo avaliar a eficiência de consumo de combustível de um trator agrícola equipado com transmissão continuamente variável, em diferentes velocidades de deslocamento e cargas parciais impostas à barra de tração do trator. Para a avaliação utilizou-se procedimento normalizado, com aplicação de seis cargas parciais (30; 40; 50; 60; 70 e 80% de Q0), por meio da frenagem com um carro dinamométrico instrumentado, em pista de concreto, em três velocidades de deslocamento (5,16; 7,29 e 10,58km h-1). Durante a condução do experimento, monitoraram-se a rotação do motor, a força de tração e o consumo horário de combustível. Os resultados indicaram que houve acréscimo, médio, de 2,67; 2,82; e 2,61L h-1 no consumo horário de combustível para o aumento de cada 10% na carga imposta ao trator, para as velocidades de 5,16; 7,29 e 10,48km h-1, respectivamente. Ao considerar o consumo específico do trator, de forma geral, diminuiu à medida que as cargas parciais e as velocidades de deslocamento foram incrementadas.

The role of corticosteroids in primary antiphospholipid antibody syndrome presenting as cerebral venous thrombosis in young females at peripartum

The clinical study of cerebral venous thrombosis in antiphospholipid antibody syndrome in young females at peripartum was done to study the incidence of antiphospholipid antibodies in highly susceptible population groups most commonly at peripartum women. The presence of these antibodies points towards increased susceptibility to thrombosis and ischemic stroke apart from other manifestations in peripartum period. The age group most affected was between 20-25 years. Most of them were primipara. Many of the patients underwent Cesarean section before the presentation with the specific neurological complaint. None of the patients gave positive history for use of oral contraceptive pills. This study showed a 69% incidence of antiphospholipid antibodies out of the total patients studied. It was also found that 66% of the APL positive patients had radiological evidence of cerebral venous thrombosis. To help clarify the significance of aCL in CVT, this study was systematically analyzed and the clinical, radiological, treatment, and outcome information of patients with CVT tested for aCL immunereactivity at our institution and the pertinent literature was systematically reviewed. It was also studied that the most of the patients improved with corticosteroids.