Two Different Left Bundle Branch Block Patterns of Premature Ventricular Contraction Originating from Right Coronary Cusp

Arrhythmia ◽  
2015 ◽  
Vol 16 (4) ◽  
pp. 232-236
Author(s):  
Jae-Jin Kwak
Keyword(s):  
Left Bundle Branch Block ◽  
Premature Ventricular Contraction ◽  
Ventricular Contraction ◽  
Bundle Branch Block ◽  
Coronary Cusp ◽  
Right Coronary Cusp

scholarly journals Evaluation of Morphology of Premature Ventricular Contraction on 12-Lead Electrocardiogram

2017 ◽  
Vol 31 (2) ◽  
pp. 74-79
Author(s):  
Umme Habiba Ferdaushi ◽  
M Atahar Ali ◽  
Shaila Nabi ◽  
Mainul Islam ◽  
Md Shamshul Alam ◽  
...  
Keyword(s):  
Premature Ventricular Contraction ◽  
Wave Pattern ◽  
Ventricular Contraction ◽  
Myocardial Diseases ◽  
Qrs Morphology ◽  
Qrs Duration ◽  
Coronary Cusp ◽  
Procedural Planning ◽  
The Right ◽  
Right Coronary Cusp

Background-Evaluation of different morphology of premature ventricular contraction (PVC) in 12-lead ECG might reflect the presence or absence of myocardial diseases and determine PVC foci. It is important for ablation procedure and it can help in pre-procedural planning and potentially may improve ablation outcome.Methods and Results-In this study, 12-lead Electrocardiogram (ECG) of 50 patients with or without structural cardiac diseases, who had experienced PVC, were obtained. PVC QRS duration, contour, pattern, unifocal or multifocaland different morphology in various lead were evaluated. PVC-QRS morphology of 50 ECGs showed QRSd d” 140ms was 60%, >140ms was 24%, >160ms was 16%. QRS notching <40ms was 42%, >40ms was 16%, smooth contour was 42%. The morphology of PVCs in lead V1, RBBB morphology was 36%, LBBB morphology was 64%; in lead V1 & V2, high r 8%, low r 4%. QRS wave polarity in lead I negative (QS, Qr, or rS wave pattern) 28%, positive (R-wave pattern) 52%; in lead II, III, avF, positive 76%. Of these RR’ or Rr’ pattern 20%, R pattern 56%. Negative 24%. QRS transition in chest lead, 16% transition occur at V4 –V5, 48% at V3-V4, 4% at V2-V3, 36% at V1-V2 level. The pattern of PVCs were bigeminy 24%, trigeminy 6%, couplet 4%, salvos 12%, R on T 2%, VT 6%. Of the 32 PVCs originating from the RVOT, 8 were classified as of free-wall origin, 24 of septal, 14 of left, 26 of right, 4 of proximal, and 2 of distal origin. Of the 6 PVCs originating from the LVOT, 4 were originated from the LVOT close to the left coronary cusp and 2 were originated from the LVOT close to the right coronary cusp. Of the 12 PVCs originated from LV fascicle, 12 of posterior fascicle origin and none from anterior fascicle origin.Conclusion-12-lead ECG is a simple, inexpensive and noninvasive tool to detect PVCs and facilitate their localization. By evaluating morphology of PVC, we can also predict the structural and functional state of heart.Bangladesh Heart Journal 2016; 31(2) : 75-79

Echocardiographic analysis of left ventricular contraction patterns in left bundle branch block and congestive heart failure

1999 ◽  
Vol 5 (3) ◽  
pp. 3 ◽  
Author(s):  
Angelo Auricchio ◽  
Ali Ghanem ◽  
Frank Groethus ◽  
Christoph Geller ◽  
Peter Nikutta ◽  
...  
Keyword(s):  
Heart Failure ◽  
Congestive Heart Failure ◽  
Left Bundle Branch Block ◽  
Left Ventricular ◽  
Ventricular Contraction ◽  
Bundle Branch Block

Electrical-mechanical relationships in experimentally produced bundle-branch block and complete heart block

1959 ◽  
Vol 14 (6) ◽  
pp. 956-960 ◽  
Author(s):  
Philip Samet ◽  
Robert S. Litwak ◽  
William H. Bernstein ◽  
Norman Kenyon
Keyword(s):  
Right Ventricular ◽  
Left Bundle Branch Block ◽  
Heart Block ◽  
Sinus Tachycardia ◽  
Complete Heart Block ◽  
Left Ventricular ◽  
Ventricular Contraction ◽  
Bundle Branch Block ◽  
Idioventricular Rhythm ◽  
The Right

Right and left ventricular pressure curves were recorded simultaneously with the electrocardiogram in the dog. Control observations were made during sinus tachycardia with normal intraventricular conduction, and repeated after production of right and left bundle-branch block and after production of complete heart block with idioventricular rhythm. The mode relationship between onset of isometric contraction in the two ventricles was 0.00 seconds during sinus tachycardia. During right bundle-branch block, left ventricular contraction started 0.01 second prior to the right; during left bundle-branch block, right ventricular contraction started 0.02 second prior to the left. During left ventricular idioventricular rhythm, left ventricular isometric contraction started 0.01 second prior to the right; during right ventricular idioventricular rhythm, right ventricular contraction started 0.01 second prior to the left. These changes in relative onset of ventricular contraction are far less than those expected on theoretical grounds. Submitted on March 26, 1959

scholarly journals Selective Proximal Left Anterior Fascicle Pacemapping for Guiding narrow QRS Premature Ventricular Complex ablation from the Right Coronary Cusp

2021 ◽  
Author(s):  
Diego Penela ◽  
Alfredo Chauca ◽  
David Soto-Iglesias ◽  
Beatriz Jauregui ◽  
Augusto Ordoñez ◽  
...  
Keyword(s):  
Beta Blockers ◽  
Premature Ventricular Complex ◽  
Qrs Complex ◽  
Bundle Branch Block ◽  
The Past ◽  
Coronary Cusp ◽  
The Right ◽  
Right Coronary Cusp ◽  
Pace Mapping ◽  
Ecg Morphology

Premature ventricular complexes (PVC) ablation has increased over the past decades. The morphology of PVCs arising from left anterior fascicle (LAF) is typically a right bundle branch block-like morphology with an inferior axis showing a qR or qRs complex in the inferior leads and an rS or RS complex in leads I and aVL. We describe the case of a 38 years old woman with symptomatic, high burden PVCs, despite of beta blockers treatment. The PVC’s ECG morphology suggested an origin in the LAF. This case illustrates how ablation from the right coronary cusp for PVC arising from the LAF could be accurately guided by pace-mapping. At this location, pacing at different outputs can result in both a selective and a non-selective capture of the left anterior fascicle.

scholarly journals Assessment of Electrocardiogram Rhythms by GoogLeNet Deep Neural Network Architecture

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Jeong-Hwan Kim ◽  
Seung-Yeon Seo ◽  
Chul-Gyu Song ◽  
Kyeong-Seop Kim
Keyword(s):  
Neural Network ◽  
Positive Predictive Value ◽  
Network Architecture ◽  
Deep Neural Network ◽  
Normal Sinus Rhythm ◽  
Premature Ventricular Contraction ◽  
Ventricular Contraction ◽  
Neural Network Architecture ◽  
Bundle Branch Block ◽  
Normal Sinus

The aim of this study is to design GoogLeNet deep neural network architecture by expanding the kernel size of the inception layer and combining the convolution layers to classify the electrocardiogram (ECG) beats into a normal sinus rhythm, premature ventricular contraction, atrial premature contraction, and right/left bundle branch block arrhythmia. Based on testing MIT-BIH arrhythmia benchmark databases, the scope of training/test ECG data was configured by covering at least three and seven R-peak features, and the proposed extended-GoogLeNet architecture can classify five distinct heartbeats; normal sinus rhythm (NSR), premature ventricular contraction (PVC), atrial premature contraction (APC), right bundle branch block (RBBB), and left bundle brunch block(LBBB), with an accuracy of 95.94%, an error rate of 4.06%, a maximum sensitivity of 96.9%, and a maximum positive predictive value of 95.7% for judging a normal or an abnormal beat with considering three ECG segments; an accuracy of 98.31%, a sensitivity of 88.75%, a specificity of 99.4%, and a positive predictive value of 94.4% for classifying APC from NSR, PVC, APC beats, whereas the error rate for misclassifying APC beat was relative low at 6.32%, compared with previous research efforts.

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