scholarly journals B-PO01-022 EXPLORING THE OPTIMAL PACING MODALITY IN PATIENTS WITH HIGH-GRADE ATRIOVENTRICULAR BLOCK AND RIGHT BUNDLE BRANCH BLOCK PATTERN: A PILOT STUDY

Heart Rhythm ◽  
2021 ◽  
Vol 18 (8) ◽  
pp. S59-S60
Author(s):  
Song-Yun Chu ◽  
Qin-Hui Sheng ◽  
Han Jin Er-Dong Chen ◽  
Jie Jiang Yu-Ling Wang ◽  
Peng-Kang He Jing Zhou ◽  
...  
Keyword(s):  
Pilot Study ◽  
Atrioventricular Block ◽  
Right Bundle Branch Block ◽  
High Grade ◽  
Bundle Branch Block ◽  
Block Pattern

scholarly journals A rare complication of implantable cardiac defibrillator placement

2020 ◽  
Author(s):  
João Ferreira ◽  
Célia Marques Domingues ◽  
Susana Isabel Costa ◽  
Maria Fátima Franco Silva ◽  
Lino Manuel Martins Gonçalves
Keyword(s):  
Heart Failure ◽  
Right Bundle Branch Block ◽  
Left Ventricular Systolic Dysfunction ◽  
Rare Complication ◽  
Systolic Dysfunction ◽  
Lateral Wall ◽  
Left Ventricular ◽  
Refractory Ascites ◽  
Bundle Branch Block ◽  
Block Pattern

Abstract Background Implantable cardiac defibrillators (ICD) are a popular and effective option in heart failure with left ventricular systolic dysfunction patients. Although frequently underdiagnosed, inadvertent malposition can lead to endocardial damage and thrombotic events. As ICD implants tend to increase in the following years, the recognition of their complications is critical. Case presentation The authors present a case of a 64-year-old woman with advanced heart failure and ICD malposition. This accidental discovery was denounced by the presence of a right bundle branch block pattern and later confirmed by echocardiography which showed the lead tip in contact with the mid segment of the left ventricular antero-lateral wall. As the patient hospitalisation was complicated with refractory ascites and cardiogenic shock, she underwent cardiac transplantation, with no recurrence of heart failure symptoms. Conclusions An electrocardiogram showing a right bundle branch block pattern during VVI pacing should arise the suspicion of inadvertent placement of a pacing/ICD lead. The many facets of echocardiography should be used for the diagnosis of this complication, as they were paramount in this case, as highlighted.

Pacemaker and conduction disturbances in patients with atrial septal defect

2020 ◽  
Vol 30 (7) ◽  
pp. 980-985 ◽  
Author(s):  
Diana H. R. Albæk ◽  
Sebastian Udholm ◽  
Anne-Sif L. Ovesen ◽  
Zarmiga Karunanithi ◽  
Camilla Nyboe ◽  
...  
Keyword(s):  
Atrial Septal Defect ◽  
Atrioventricular Block ◽  
Right Bundle Branch Block ◽  
Septal Defect ◽  
Pacemaker Implantation ◽  
Bundle Branch Block ◽  
Conduction Disturbances ◽  
Septal Defects ◽  
Atrial Septal Defects ◽  
Background Population

AbstractObjective:To determine the prevalence of pacemaker and conduction disturbances in patients with atrial septal defects.Design:All patients with an atrial septal defect born before 1994 were identified in the Danish National Patient Registry, and 297 patients were analysed for atrioventricular block, bradycardia, right bundle branch block, left anterior fascicular block, left posterior fascicular block, pacemaker, and mortality. Our results were compared with pre-existing data from a healthy background population. Further, outcomes were compared between patients with open atrial septal defects and atrial septal defects closed by surgery or transcatheter.Results:Most frequent findings were incomplete right bundle branch block (40.1%), left anterior fascicular block (3.7%), atrioventricular block (3.7%), and pacemaker (3.7%). Average age at pacemaker implantation was 32 years. Patients with defects closed surgically or by transcatheter had an increased prevalence of atrioventricular block (p < 0.01), incomplete right bundle branch block (p < 0.01), and left anterior fascicular block (p = 0.02) when compared to patients with unclosed atrial septal defects. At age above 25 years, there was a considerably higher prevalence of atrioventricular block (9.4% versus 0.1%) and complete right bundle branch block (1.9% versus 0.4%) when compared to the background cohorts.Conclusions:Patients with atrial septal defects have a considerably higher prevalence of conduction abnormalities when compared to the background population. Patients with surgically or transcatheter closed atrial septal defects demonstrated a higher demand for pacemaker and a higher prevalence of atrioventricular block, incomplete right bundle branch block, and left anterior fascicular block when compared to patients with unclosed atrial septal defects.

scholarly journals Left bundle branch pacing in patients with right bundle branch block

2021 ◽  
Author(s):  
Kailun Zhu ◽  
Yali Sun ◽  
Binni Cai ◽  
Linlin Li ◽  
Guiyang Li ◽  
...  
Keyword(s):  
Right Bundle Branch Block ◽  
Sick Sinus Syndrome ◽  
Conduction Block ◽  
T Test ◽  
High Grade ◽  
Test Results ◽  
Specific Mechanism ◽  
Bundle Branch Block ◽  
Before And After ◽  
Qrs Duration

Abstract Background The paced morphology of right bundle branch block (RBBB) pattern is one of the parameters which can be used to confirm the left bundle branch capture during left bundle branch pacing (LBBP) implantation. However, changes of paced morphology after LBBP performed in patients with RBBB have not been well discussed. Objective To compare the paced morphology in patients with RBBB before and after LBBP and to discuss the possible mechanisms behind such changes. Methods Patients with RBBB who underwent LBBP implantation were selected. The QRS duration was measured before and after the implantation of LBBP for each patient and compared Student t test. Results We included 34 consecutive patients (median age 72.76 years, 73.53% male), of whom 3 had sick sinus syndrome (SSS) and 31 had high-grade atrioventricular conduction block (AVB). The average QRS duration was 144.87±5.22ms before LBBP implantation and 116.18±6.15ms after LBBP implantation, with a mean decrease in QRS duration of 28.70±3.30ms (95% CI: 27.55-29.85 ms, P < 0.01). Conclusion In patients with RBBB, the QRS duration after LBBP is narrower than that before LBBP. The specific mechanism is still unclear.

scholarly journals Right bundle branch block pattern in right ventricular endocardial pacing: A needless concern?

Heart India ◽  
2013 ◽  
Vol 1 (2) ◽  
pp. 57
Author(s):  
MangalachulliPottammal Ranjith ◽  
Kalathingathodika Sajeer ◽  
ChakanalilGovindan Sajeev ◽  
Cicy Bastian ◽  
Vellani Haridasan ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Right Bundle Branch Block ◽  
Bundle Branch Block ◽  
Block Pattern ◽  
Endocardial Pacing

The Electrocardiogram in Nonsystemic Ventricular Pacing in a Patient with Congenitally Corrected Transposition of the Great Arteries and Dextrocardia

2021 ◽  
Vol 4 (11) ◽  
pp. 01-05
Author(s):  
Roy Norris
Keyword(s):  
Right Bundle Branch Block ◽  
P Wave ◽  
Ventricular Pacing ◽  
Bundle Branch Block ◽  
High Incidence ◽  
Situs Solitus ◽  
Block Pattern ◽  
Congenitally Corrected Transposition ◽  
Third Degree Atrioventricular Block ◽  
Corrected Transposition

Congenitally corrected transposition of the great arteries (CCTGA) has a high incidence of dextrocardia and complete heart block. We describe a 34 year-old male with CCTGA, dextrocardia, and third degree atrioventricular block status-post dual chamber pacemaker that presented with acute heart failure syndrome. Cardiac CT Angiography confirmed CCTGA with situs solitus and dextrocardia. EKG with standard frontal leads showed a normal P wave axis and right-sided precordial leads showed a right bundle branch block pattern. With situs solitus there is a normal P wave axis on standard frontal leads. With nonsystemic ventricular pacing in CCTGA with dextrocardia left- and right-sided precordial leads show a left bundle branch block pattern and right bundle branch block pattern respectively. This case highlights electrocardiographic patterns seen with dextrocardia and morphologic reversal of ventricles. Subject Terms List: Dextrocardia, Electrocardiogram, Pacemaker, Transposition of the Great Arteries

Posterior fascicular block obscuring the right bundle branch block pattern

2012 ◽  
Vol 159 (3) ◽  
pp. e51-e52
Author(s):  
Paolo Alboni ◽  
Lorella Gianfranchi ◽  
Sabrina Bressan
Keyword(s):  
Right Bundle Branch Block ◽  
Bundle Branch Block ◽  
Block Pattern ◽  
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