Textbook of Electrocardiography

Chugh, SN

doi:10.5005/jp/books/10908

Cited by 8 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For examples, the deep and broad S-waves in lead V1 and the broad clumsy R-waves in V6 have been used for the diagnosis of LBBB (Podrid et al, 2015), and V1 and V6 were identified as having the leading performance among the single leads. Meanwhile, the diagnostic criteria of RBBB included the rSR 0 pattern in leads V1 and V2 (Chugh, 2014), which were also selected as top-performing single leads.…”

Section: Model Performances With Single-lead Datamentioning

confidence: 99%

Detection and Classification of Cardiac Arrhythmias by a Challenge-Best Deep Learning Neural Network Model

et al. 2020

View full text Add to dashboard Cite

show abstract

Section: Model Performances With Single-lead Datamentioning

confidence: 99%

Detection and Classification of Cardiac Arrhythmias by a Challenge-Best Deep Learning Neural Network Model

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Changes of aF QRS angle in patients with AF after RFA PVI have not been studied previously. Variety of aF QRS angles, we found in the early postoperative period with the HEA deviation to the right, can not be explained from the point of view of existing mechanisms known today, because it is acute, not long-term [6,[10][11][12]. The possible cause of its change may be PVI during RFA.…”

Section: Resultsmentioning

confidence: 90%

The electrical axis of the heart in patients with atrial fibrillation before and after radiofrequency ablation

Rybchynskyi¹,

Брынза²,

Volkov³

et al. 2018

ZMJ

View full text Add to dashboard Cite

Цель работы-изучить изменения электрической оси сердца у пациентов с фибрилляцией предсердий до и после радиочастотной аблации с изоляцией легочных вен. Материалы и методы. Представлены данные изучения изменения положения электрической оси сердца (ЭОС) у 40 пациентов (24 мужчины и 16 женщин) с фибрилляцией предсердий до и в острый послеоперационный период (3-7 сутки) после перенесенной радиочастотной аблации с изоляцией легочных вен (РЧА ЛВ). Определяли значения вектора угла α ЭОС (αF QRS) и его проекций на фронтальную (αQRS max F), сагиттальную (αQRS max Si) и горизонтальную плоскости (αQRS max H) по усредненному комплексу за 5 секунд. Пациенты разделены на 3 группы: группа 1-нормального положения ЭОС α = 30-70 (n = 10), группа 2-отклонения ЭОС влево α < 30 (n = 23), группа 3-отклонения ЭОС вправо-α > 70 (n = 7). Анализ достоверности изменений после операции проводили с использованием теста Вилкоксона. Результаты. Установлено, что изначально бимодальное распределение результирующего вектора с максимумами в группах 1 и 2 изменяется на одномодальное ассиметричное со смещением максимума значений в область группы 1. Изменения проекций aF QRS max на плоскости были малоинформативными. После РЧА ЛВ у всех пациентов происходит изменение результирующего aF QRS, у трети (32,5 %) пациентов происходит нормализация ЭОС, у 5 %-увеличение aF QRS с переходом в группу 3. Выводы. Требуется дальнейшее исследование изменения aF QRS, сравнение изменений угла aF QRS и предсердного вектора.

show abstract

“…Hemodynamically, the ST segment corresponds to ventricular systole, whereas electrophysiologically, it correlates with phase 2 (plateau phase) of the transmembrane action potential (Tilley 1992b , Rautaharju et al . 2009 , Chugh & Chugh 2012 ). This phase occurs after phase 0 and phase 1, during which the majority of myocardial cells have gone through rapid depolarisation and early repolarisation, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Jeong et al . 2010 , Chugh & Chugh 2012 ). Specifically, the J point ( i.e ., the point of intersection between the descending branch of the R wave, or the ascending branch of the S wave when present and the baseline) was used as the start point of the ST segment; the endpoint of the ST segment was the start point of the T wave.…”

Section: Methodsmentioning

confidence: 99%

Retrospective evaluation of the ST segment electrocardiographic features in 180 healthy dogs

Romito

Castagna²,

Pelle

et al. 2022

J of Small Animal Practice

View full text Add to dashboard Cite

Normal features of the ST segment are poorly characterised in dogs. This study aimed to describe ST segment characteristics in a population of healthy dogs.Materials and MethOds: Medical records were reviewed to identify healthy dogs that underwent an electrocardiogram. Several ST segment qualitative parameters were evaluated: presence/absence of deviation, type of deviation (depression/elevation) and morphological patterns of depression (horizontal, downsloping, upsloping and sagging) and elevation (horizontal, concave and convex). Moreover, the amplitude of ST segment depression/elevation was measured. The potential effect of sex, bodyweight, age and somatotype on the presence/absence of ST segment deviation was evaluated through binary logistic regression.results: One hundred and eighty dogs were enrolled. The deviation was evident in 43 of 180 dogs (23.9%), among which 36 showed depression and seven showed elevation. The median depression amplitude was 0.1 (range 0.05 to 0.3) mV. The mean elevation amplitude was 0.136 ±0.055 mV. Concerning depression morphology, the horizontal pattern was overrepresented, followed by the downsloping and upsloping ones.Concerning elevation morphology, all dogs showed a concave pattern. No meaningful effect of sex, bodyweight, age and somatotype on the presence/absence of ST segment deviation was documented. clinical significance: Normal features of canine ST segment were described and made available for clinical use.

show abstract

Textbook of Electrocardiography

Cited by 8 publications

References 0 publications

Detection and Classification of Cardiac Arrhythmias by a Challenge-Best Deep Learning Neural Network Model

Detection and Classification of Cardiac Arrhythmias by a Challenge-Best Deep Learning Neural Network Model

The electrical axis of the heart in patients with atrial fibrillation before and after radiofrequency ablation

Retrospective evaluation of the ST segment electrocardiographic features in 180 healthy dogs

Contact Info

Product

Resources

About