Results 151 to 160 of about 83,638 (203)
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Pacemaker Channels and Sinus Node Arrhythmia
Trends in Cardiovascular Medicine, 2004Cardiac pacemaker activity is regulated by at least five different classes of ion channels and by the opposing influence of sympathetic and parasympathetic stimulation. Inactivation of several genes, including a subunit coding for the potassium channel activated by the muscarinic receptor, I(KACh); the calcium channel, I(Ca,); and the hyperpolarization-
Juliane, Stieber +2 more
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2018
Sinus bradycardia and tachycardia are regular heart rhythms with unusual rate. In most cases, they are physiologic or secondary to another process and virtually never require direct treatment.
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Sinus bradycardia and tachycardia are regular heart rhythms with unusual rate. In most cases, they are physiologic or secondary to another process and virtually never require direct treatment.
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Sinus arrhythmia: clinical case
2023Introducción. La arritmia sinusal es una alteración del ritmo cardiaco, que no presenta sintomatología ni muestra anomalía en el nódulo sinusal. La causa más común es una lesión cerebral, provocada por el aumento de la presión intracraneal o hipoxia, que con frecuencia se manifiesta en personas jóvenes sanas por la variabilidad en la frecuencia ...
Calle Bermeo, Jessica Marcela +2 more
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Respiratory Sinus Arrhythmia of Brainstem Lesions
Journal of Child Neurology, 1999In this pilot study we investigated the hypothesis that intrinsic and extrinsic brainstem lesions situated within the pontomedullary region would effect the integrity of respiratory sinus arrhythmia. The study sample consisted of three patients with anatomic brainstem abnormalities associated with isolated Chiari I malformation, Chiari II malformation
F J, DiMario, L, Bauer, D, Baxter
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Do You Believe in Sinus Arrhythmia?
Ergonomics, 1973Some problems raised by the use of heart rate irregularity as a dependent variable in experiments are mentioned. Referring to experimental results it is argued that mental load is not an indivisible concept. In laboratory studies a binary choice task is often used in order to provide the level of mental load as an independent variable This kind of task
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Q-T interval in sinus arrhythmia
Journal of Electrocardiology, 1981Summary The Bazett equation is modified for calculating the “corrected Q-T” in children with sinus arrhythmia.
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