Veja grátis o arquivo Eletrofisiologia cardíaca enviado para a disciplina de Fisiologia Categoria: Anotações – Veja grátis o arquivo Aula de eletrofisiologia cardiaca e ECG enviado para a disciplina de Cardio Categoria: Aulas – 2 – Análise dos efeitos do 2,6-Diisopropilfenol sobre a eletrofisiologia cardíaca em pacientes com ectopias de via de saída ventricula. Propofol is an effective.

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You must be signed in to post a comment. The atria contract a fraction of a second before the ventricles so the blood empties into the ventricles before the ventricles contract.

Hi, Why this article is not access for allI really need the method but unfortunately I can not use it. Eletrofisiloogia, Helena Serra Azul Format: Not only will this give you access to this article but will provide you with the opportunity to access other content.

Monteiro, Helena Serra Azul. A small portion of the last part of the PR interval is represented by the conduction time through the bundle of His.

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Conduction accelerates through the His Bundle into the bundle branches. At baseline and under programmed atrial and ventricular pacing, data were collected from 17 seventeen cardiac electrophysiological variables: The atrial depolarization wavefront, represented by the P-wave on the ECG, spreads initially downward in the right atrium, and ends as a primarily leftward vector in the left atrium.


These variables were collected before and during the intravenous infusion of propofol aiming to achieve a target sedation titrated by bispectral index BIS between 40 and Ten patients with ventricular outflow tract arrhythmias without structural heart disease were selected and indicated for the treatment of ablation. The bundle of His divides into right and left pathways to provide electrical stimulation to both ventricles. Skip to content Medicine. Under some conditions, almost all heart tissue is capable of starting a heartbeat automaticityor becoming the “pacemaker,” just like the sinus node.

Diagnostic catheters were positioned in the coronary sinus, right ventricle and anteroseptal region of the tricuspid ring for atrial, ventricular and HIS potentials, respectively.

Programmed Electrical Stimulation in Mice | Protocol (Translated to Portuguese)

However, we have not found in the literature studies on the effects of propofol on post-potency-triggered arrhythmias that represent one of the most frequent types of ventricular arrhythmias. These effects seem to be Fill cardiacaa the form below to receive a free trial or learn more about access:. Conduction time through the AV node accounts for most of the duration of the PR interval.

Hello I’d like carddiaca thank you for your interest in JoVE.

Aula de eletrofisiologia cardiaca e ECG

Enviado por Gabriela flag Denunciar. If that doesn’t help, please let us know. Conduction through the AV Node is normally slow.

If the normal conduction pathway is interrupted,another part of the heart takes over as pacemaker. Such practice is based on individual observations and has no backing in scientific publications. A small portion of the last part of the PR interval is represented by the conduction time through the bundle branches.


Just below the AV node, the impulse passes through the bundle of His. Please sign in or create an account. The suspicion that the infusion of this agent can suppress this type of arrhythmia causes propofol to be deferred as sedative drug in electrophysiological study procedures that aim at the ablation of foci of this arrhythmic disorder.

Analysis of the data presented showed that the infusion of propofol in doses titrated by the bispectral index did not seem to interfere in the Expression of ventricular arrhythmias triggered by late post-potentials when these were manifested as ventricular extrasystoles. For other languages click here.

Similar Items Alteracoes circadianas da funcao autonomica cardiaca em pacientes hipertensos com hipertrofia ventricular esquerda by: Robotic Ablation of Atrial Fibrillation. Recent studies have demonstrated that this drug exerts effects on the cardiac conduction system having both pro-arrhythmic and antiarrhythmic effects in a concentration-dependent manner.