Peer-reviewed veterinary case report
ECG signs of heart conduction delay in dogs with bundle branch blocks
By Battaia, S et al.·Published in Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology·2022·Clinica Veterinaria Malpensa, Italy·View original on PubMed →
PetCaseFinder translated the abstract of this peer-reviewed paper into plain English so pet owners can read it. We do not publish original research — every detail traces back to the citation above. How we work →
Original publication title: Noninvasive electrocardiographic parameters to assess interventricular dyssynchrony in dogs with bundle branch blocks.
- Species:
- dog
Plain-English summary
A group of dogs with heart problems, specifically those with right or left bundle branch blocks (RBBB or LBBB), were studied to understand their heart's electrical activity better. The researchers used electrocardiograms (ECGs) to measure how the heart's electrical signals were synchronized. They found that dogs with these conditions had significant differences in their heart's electrical timing compared to healthy dogs. This information can help veterinarians identify and assess heart issues in dogs more accurately.
People also search for: dog heart problems symptoms · dog ECG results explained · treatment for dog bundle branch block
Abstract
OBJECTIVES: To define electrocardiographic features of complete left bundle branch block (LBBB) and right bundle branch block (RBBB), and the use of R-peak time (RPT) to identify interventricular dyssynchrony in dogs with BBB. ANIMALS, MATERIALS AND METHODS: Twelve-lead ECG tracings of 20 dogs with RBBB, 20 with LBBB, and 60 healthy dogs were retrospectively analyzed and RPT was measured in precordial leads. Interventricular dyssynchrony index (IDI) was than calculated. RESULTS: In RBBB, mean electrical axis (MEA) was -111° [-120/-100°], VRPT was significantly longer (61 ms [55-72 ms]) than left precordial leads RPT (V:25 ms [22-30 ms]; V:25 ms [22-29 ms]; V:24 ms [21-29 ms]; V:25 ms [22-29 ms]; V:25 ms [22-29 ms]) and when compared to normal dogs (P < 0.001). In LBBB, MEA was 76° [70/81°], RPT in left precordial leads was significantly longer (V:49 ms [34-58 ms]; V:49 ms [43-57 ms]; V:52 ms [45-62 ms]; V:53 ms [45-63 ms]; V:55 ms [45-63 ms]) than VRPT (17 ms [15-20 ms]) and when compared to normal dogs (P < 0.001). VRPT > 28 ms and VRPT > 36 ms were found to predict the presence of RBBB and LBBB with a sensitivity of 100% and 96.7%, and a specificity of 96.7% and 99.5%, respectively. The IDI was 23% [16-29%] in normal dogs and significantly greater in dogs with RBBB (33% [30-38%]; P < 0.001) and LBBB (32% [23-41%]; P = 0.006). CONCLUSIONS: This study defines ECG features and RPT in dogs with BBB. Electrical interventricular dyssynchrony can be defined using IDI in dogs with BBB.
Find similar cases for your pet
PetCaseFinder finds other peer-reviewed reports of pets with the same symptoms, plus a plain-English summary of what was tried across them.
Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/35349852/