Antes do procedimento, 80% dos doentes estavam em ritmo sinusal. Incluídos 182 doentes (78☘ anos sexo feminino 56%) e em 54% destes implantadas próteses autoexpansíveis. Os doentes com pacemaker permanente foram excluídos. MétodosĪnálise retrospetiva dos electrocardiogramas, antes e após TAVI, num centro terciário entre agosto/2007 e outubro/2016. ObjetivosĪvaliar a frequência e o tipo de alterações elétricas após a TAVI, consoante o tipo de prótese avaliar os preditores destas alterações. Contudo, à exceção do risco de implantação de pacemaker definitivo, poucos estudos avaliaram os efeitos da TAVI nas propriedades elétricas. The depth of valve implantation was a predictor of conduction disturbances.Ī implantação percutânea de prótese aórtica (TAVI) associa-se a alterações da condução elétrica cardíaca. These disturbances were more pronounced in patients undergoing SEP implantation and tended to improve at six-month follow-up. The main electrocardiographic disturbances post TAVI were PR prolongation, increased QRS and new-onset LBBB. The depth of valve implantation was a predictor of new LBBB at discharge after multivariate analysis (OR 37.6, 95% CI 14.6–65.2, p=0.001). New-onset left-bundle branch block (LBBB) was observed in 25% of patients. There was also a significant increase in QRS duration at discharge (129☒8 ms vs. After TAVI, 21% of patients developed new-onset atrial fibrillation and there was a significant increase in PR interval at discharge (186±41 ms vs. Most patients (80%) were in sinus rhythm at baseline. We included 182 patients (78☘ years 56% female) and self-expanding prostheses (SEP) were implanted in 54%.

Patients with permanent pacemakers were excluded. We performed a detailed retrospective analysis of all electrocardiograms in patients who underwent TAVI, before and after the procedure, at a tertiary center from August 2007 to October 2016. To assess the frequency and type of electrocardiographic disturbances following TAVI, according to the type of prostheses and to assess predictors of these disturbances. However, beyond the risks of pacemaker implantation, few studies have performed a detailed assessment of the effects of TAVI on several cardiac electrical properties.

It may lead to delays in proper management of those heart conditions.Transcatheter aortic valve implantation (TAVI) is associated with cardiac electrical disturbances. A slowed heart rate may lead to fainting, irregular heart rhythms and other serious complications.īecause bundle branch block affects the electrical activity of the heart, it can sometimes complicate the accurate diagnosis of other heart conditions, especially heart attacks. The lack of signaling can slow the heart rate. If both the right and the left bundles are blocked, the main complication is a complete blockage of the electric signaling from the upper to the lower chambers of the heart. Having high blood pressure or heart disease increases the risk of having bundle branch block. Bundle branch block is more common in older adults than in younger people. Risk factors for bundle branch block include:

High blood pressure in the pulmonary arteries (pulmonary hypertension).

Heart structure problems that are present at birth (congenital heart defects) - such as a hole in the wall separating the upper chambers of the heart (atrial septal defect).

Blood clot in the lungs (pulmonary embolism).Thickened, stiffened or weakened heart muscle (cardiomyopathy).Inflammation of the heart muscle (myocarditis).Sometimes, there is no known cause.Ĭauses can include: Left bundle branch block The cause for bundle branch blocks can differ depending on whether the left or the right bundle branch is affected. As a result, the heart beats irregularly. If one or both of these branch bundles are damaged - due to a heart attack, for example - the electrical impulses can become blocked. These impulses travel along a pathway, including two branches called the right and the left bundles. Request an Appointment at Mayo Clinic CausesĮlectrical impulses within the heart muscle cause it to beat (contract).

Lbbb vs ivcd