scholarly journals The Changes of T-Wave Amplitude and QT Interval Between the Supine and Orthostatic Electrocardiogram in Children With Dilated Cardiomyopathy

2021 ◽  
Vol 9 ◽  
Author(s):  
Cheng Tan ◽  
Xiuying Yi ◽  
Ying Chen ◽  
Shuangshuang Wang ◽  
Qing Ji ◽  
...  
Keyword(s):  
Dilated Cardiomyopathy ◽  
Research Group ◽  
Qt Interval ◽  
Wave Amplitude ◽  
Control Group ◽  
Amplitude Difference ◽  
T Wave ◽  
Before And After ◽  
Lead Avr ◽  
Response Group

Objectives: Electrocardiogram (ECG) can be affected by autonomic nerves with body position changes. The study aims to explore the ECG changes of children with dilated cardiomyopathy (DCM) when their posture changes.Materials and methods: Sixty-four children diagnosed with DCM were recruited as research group and 55 healthy children as control group. T-wave amplitude and QT interval in ECG were recorded, and their differences between supine and orthostatic ECG were compared in both groups. Subsequently, the children with DCM were followed up and the differences before and after treatment compared.Results: ① Comparisons in differences: Differences of T-wave amplitude in lead II and III, aVF, and V5 and differences of QT interval in lead II, aVL, aVF, and V5 were lower in the research group than in the control group. ② Logistic regression analysis and diagnostic test evaluation: The differences of T-wave amplitude in lead III and QT interval in lead aVL may have predictive value for DCM diagnosis. When their values were 0.00 mV and 30 ms, respectively, the sensitivity and specificity of the combined index were 37.5 and 83.6%. ③ Follow-up: In the response group, the T-wave amplitude difference in lead aVR increased and the difference of QT interval in lead V6 decreased after treatment. In the non-response group, there was no difference before and after treatment. When the combined index of the differences of T-wave amplitude difference in lead aVR and QT interval difference in lead V6, respectively, were −0.05 mV and 5 ms, the sensitivity and specificity of estimating the prognosis of DCM were 44.4 and 83.3%.Conclusions: The differences of T-wave amplitude and QT interval may have a certain value to estimate DCM diagnosis and prognosis.

Monitoring of conductive hearing loss due to because of eustachian tube dysfunction preservative treated with the Otovent pneumotherapy method.

2018 ◽  
Vol 87 (3) ◽  
pp. 133-137
Author(s):  
Małgorzata Nowak ◽  
Beata Wolnowska ◽  
Alicja Sekula
Keyword(s):  
Hearing Loss ◽  
Eustachian Tube ◽  
Research Group ◽  
Pure Tone ◽  
Conductive Hearing Loss ◽  
Pure Tone Audiometry ◽  
Control Group ◽  
Tube Obstruction ◽  
Before And After ◽  
Conductive Hearing

INTRODUCTION. A conductive hearing loss is a very common problem in childhood. It is possible to indicate many reasons for the problem, but most of the times it is caused by the infectious process, as well as the typical adenoid hypertrophy in children. Very often this disease is associated with obstruction of the eustachian tube.OBJECTIVE. In this study, the authors present the results of the hearing tests of patients who underwent the treatment of  the eustachian tube obstruction by pneumotherapy with otovent. The aim of the work was to monitor the effectiveness of this method of OME treatment.RESEARCH GROUP AND METHODOLOGY. The research group consisted of 54 children aged 4 to 15 years, including 23 girls and 31 boys. The control group consisted of 16 children. Pure tone audiometry and impedance audiometry were performed before and after the therapy, for all of the participants.RESULTS. Obtained results of the study showed improvement in hearing in children correctly using the Otovent set. Hearing improvement was recorded both in the results of pure tone audiometry and impedance audiometry.CONCLUSIONS. The obtained results showed the effectiveness of the pneumotherapy method. In the case of the research group, 81.4% of children achieved the auditory norm (44 people). In the case of the control group, after a fixed period of application of the Otovent set, this value was 0%. The intergroup comparative analysis clearly shows that the research group obtained significantly better results within all of the parameters assessed, than the control group.

scholarly journals COMPORTAMIENTO DEL INTERVALO QT CORREGIDO EN ARTRITIS TEMPRANA

2016 ◽  
Vol 73 (1) ◽  
Author(s):  
Carla Andrea Gobbi ◽  
D Alessio ◽  
Paula Alba ◽  
P Asbert ◽  
E Albiero ◽  
...  
Keyword(s):  
Disease Activity ◽  
Qt Interval ◽  
Disease Activity Score ◽  
Standard Technique ◽  
Control Group ◽  
Low Disease Activity ◽  
T Wave ◽  
Das 28 ◽  
Rheumatology Unit ◽  
The Mean

Introducción: La  dispersión del  intervalo QT  ha sido descripta en  pacientes con artritis reumatoidea (AR) y  puede ser un marcador útil de morbi-mortalidad cardiovascular.Objetivos: Conocer el comportamiento del intervalo QT corregido (iQTc) en pacientes con AT y evaluar la asociación con  actividad de la enfermedad (AE).Material y Métodos:  Se realizó un estudio comparativo de corte transversal que incluyó pacientes mayores de 16 años, con diagnóstico de artritis temprana (AT) , atendidos en la  Unidad de Reumatología del Hospital Córdoba, desde enero de 2010 a diciembre de 2013. El grupo control se apareó por edad, sexo y antecedentes patológicos.  Los criterios de exclusión fueron evidencias  de IAM,  arritmia, potasemia>5mEq/L,  ingesta de fármacos que afecten el QT. Se recolectaron datos demográficos, la actividad de la enfermedad se midió por DiseaseActivity Score (DAS 28), clasificando la actividad de la enfermedad en Baja AE, DAS 28 menor a 3,2,  Moderada/ Alta mayor de 3.2;   y se realizó ECG con técnica  estándar. El  intervalo QT fue medido desde el comienzo del complejo QRS hasta el final de la onda T. Para obtener el valor del iQTc, se utilizó la fórmula de Bazett.Resultados: El número de pacientes fue de 31, 83.9 % de sexo femenino y con edad media de 41.9 años, el DAS 28 promedio de 5.09. El grupo control incluyo 31 individuos con  una edad media de 42.2. El intervalo QT fue de 0.376 mm/s y el iQTc de 0.408 en AT y el QT fue de 0.381 mm/s y el iQTc de 0.415mm/s en el grupo control (p NS, p NS). El QT y el iQTc fueron de 0.39 y 0.38mm/s en los pacientes con baja  AE; 0.37mm/s y 0.411en Moderada / Alta AE (p=NS).Conclusión: El iQTc no demostró alteraciones ni se relacionó con actividad de la enfermedad en  AT   Background: The QT interval modification has been described in patients with Rheumatoid Arthritis (RA) and it could be a useful marker of cardiovascular morbidity and mortality.Aims: To evaluate the QT interval modifications in patients with early arthritis (EA) and its association with disease activity (DA).METHODS: We studied patients with diagnosis of EA attended to Rheumatology Unit at Córdoba Hospital from January 2010 to December 2013. Control group was population age, gender and cardiovascular risk factors matched. Exclusion criteria were: myocardial infarction, arrhythmia, K level >5, or anti-arrhythmia treatment. ECG was performed by standard technique and QT interval was measured from the beginning of QRS to the end of T wave. QTC value was calculated by Bazzet formula.  The activity disease was measured by Disease Activity Score (DAS 28), and was considered low disease activity below 3.2, and moderate / high disease activity more than 3,2.RESULTS: 31 patients were included with 83.9 % of females and the mean age was  41.9 years old and DAS 28 was 5.09.  31 persons were included as a control group with a mean age of 42.2 years old.  QT interval was  0.376 mm/s  and l QTC  0.408  in EA and  QT was  0.381 mm/s and  QTC  0.415 mm/s  in the control group ( p= NS, p= NS).  QT interval and  QTC were  0.39 and 0.38 in low DA patients; 0.37 and  0.411 in Moderate / High DA ( p=NS)CONCLUSIONS: The QT interval  was not modified and it was not related with DA in EA. 

scholarly journals THE UTILITY OF T-WAVE AMPLITUDE IN LEAD AVR ON THE CLINICAL DIAGNOSIS OF CARDIAC INVOLVEMENT IN PATIENTS WITH SARCOIDOSIS

2016 ◽  
Vol 67 (13) ◽  
pp. 1506
Author(s):  
Yoshihiro Tanaka ◽  
Tetsuo Konno ◽  
Shohei Yoshida ◽  
Toyonobu Tsuda ◽  
Kenshi Hayashi ◽  
...  
Keyword(s):  
Clinical Diagnosis ◽  
Wave Amplitude ◽  
Cardiac Involvement ◽  
T Wave ◽  
Lead Avr

Transfer Effects of Teaching Conceptual Versus Perceptual Analogies

2007 ◽  
Vol 6 (2) ◽  
pp. 194-217 ◽  
Author(s):  
David Tzuriel
Keyword(s):  
Test Performance ◽  
Training Group ◽  
Kindergarten Children ◽  
Task Characteristics ◽  
Control Group ◽  
Transfer Effects ◽  
Perceptual Training ◽  
Before And After ◽  
Mediation Processes ◽  
Response Group

The study’s main objective was to investigate the transfer effects of training in one type of analogies (conceptual versus perceptual) on performance of the second type. A sample of 396 kindergarten children (mean age = 5:8 years) were randomly assigned to three experimental (E1, E2, E3) and one control group. Groups E1 and E2 received training in either conceptual (n = 118) or perceptual analogies (n = 121), respectively. Training included encoding, inference, mapping, application, and response. Group E3 (n = 93) was trained only in the relation between the analogy terms A : B and the control group had no training. All groups were administered the Children’s Conceptual and Perceptual Analogical Modifiability (CCPAM) test before and after the training. Groups E1 and E2 improved their test performance significantly from pre- to posttraining as compared with group E3, which showed a significant decrease in conceptual analogies and no improvement in perceptual analogies. Perceptual training (group E2) was limited to gains in perceptual analogies whereas conceptual training (group E1) was effective in improving conceptual and perceptual analogies. Group E3 showed a pre- to posttraining performance decrease. The findings are discussed in relation to mediation processes, task characteristics, conditions for transfer, and practical implications for teaching.

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