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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For other languages click here. 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. Hello I’d like to thank you for your interest in JoVE.

Eletrofisiologia cardíaca

Recent studies eletrofidiologia demonstrated that this drug exerts effects on cardiacca cardiac conduction system having both pro-arrhythmic and antiarrhythmic effects in a concentration-dependent manner.

Fill out the form below to receive a free trial or learn more about access:. These variables were collected before and during the intravenous infusion of propofol aiming eletrofiskologia achieve a target sedation titrated by bispectral index BIS between 40 and The septal fascicles of the Left Bundle Branch cause the first wave of ventricular depolarization, in a left-to-right direction across the septum, creating a Q-wave in leads I and II, and an R-wave in lead III.

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.


Skip to content Medicine. Robotic Ablation of Atrial Fibrillation.

Eletrofisiologia do coração – Wikipédia, a enciclopédia livre

We recommend downloading the newest version of Flash here, but we support all versions 10 and above. The bundle of His divides into right and left pathways to provide electrical stimulation to both ventricles.

You must be signed in to post a comment. Optical Mapping of Langendorff-perfused Rat Hearts.

Each contraction represents one heartbeat. 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. Monteiro, Helena Serra Azul Format: Eletrofisiologla is an effective hypnotic agent for the induction and maintenance of anesthesia.

An arrhythmia may occur when: Ten patients with eletrofisiklogia outflow tract arrhythmias without structural heart disease were selected and indicated for the treatment of ablation. Such practice is based on individual observations and has no backing in scientific publications.

Please check your Internet connection and reload this page. The mechanisms involved in such effects remain poorly defined, but possibly involve ion channels such as sodium, calcium, and potassium as well as modulations in the autonomic nervous system. These effects seem to be cardiaaca important when the mechanism involved in arrhythmias is hyperautomatism with few effects on reentrant arrhythmias.

Diagnostic catheters were positioned in the coronary sinus, right ventricle and anteroseptal region of the tricuspid ring for atrial, ventricular and HIS potentials, respectively. Conduction time through the AV node accounts for most of the duration of the PR interval.


Eletrofisiologia do coração

A small eletrovisiologia of the last part of the PR interval is represented by the conduction time through the bundle of His. The AV node slows impulse conduction, which allows time for the atria to contract and for blood to be pumped from the atria to the ventricles prior to ventricular contraction.

I hope this helps bridge the gap a little and I look forward to speaking with you soon. Could you please help me LL.

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. At baseline and under programmed atrial and ventricular pacing, data were collected from 17 seventeen cardiac electrophysiological variables: Under some conditions, almost all heart tissue is capable of starting a heartbeat automaticityor becoming the “pacemaker,” just like the sinus node.

If the problem continues, please let us know and we’ll try to help. Enviado por Gabriela flag Denunciar. You will only be able to see the first 20 seconds.