Echocardiographic evaluation of the left atrium of healthy dogs using the conventional M-mode and the bidimensional mode

Prada, Didier G.; Oliveira, V. M. C; Larsson, Maria; Yamaki, Fernanda Lie

doi:10.1590/s0102-09352012000300009

Cited by 2 publications

(1 citation statement)

References 17 publications

(26 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, using transverse views of the heart obtained from the right paraesternal window, the left atrial dimension and the aortic diameter were measured at the very beginning of diastole, which were later used to calculate the left atrium-to-aorta ratio (LA/Ao). In this study, we considered 1.37 as the cut-off for increased left atrium (PRADA et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

P wave dispersion in obese dogs with and without mitral valve disease

et al. 2018

View full text Add to dashboard Cite

Pwave dispersion (Pd) is an electrocardiographic index defined as the difference between the minimum and maximum Pwave duration in multiple leads. The augmentation of Pd reflects the discontinuous and inhomogeneous atrial depolarization resulting from cardiac and non-cardiac conditions. In humans, an increased Pd is associated with the development of cardiac arrhythmias, particularly atrial fibrillation. To investigate Pd in obese dogs, we enrolled 76 dogs, which were classified in four distinct categories according to body condition and the existance of valve insufficiency: obese dogs (O), dogs with both obesity and cardiac disease (O+CD), lean dogs with cardiac disease (CD) and healthy controls (H). To be included in the study, all dogs underwent an electrocardiographic and echocardiographic assessment. We reported significantly higher Pd in the animals included in categories O, O+CD and CD (18.0±7.6ms, 16.1±4.4ms, 12.1±4.3ms, respectively) as compared to the healthy subjects (7.3±2.2ms). Also, significant correlations between Pd and both the body mass index and body fat percentage were documented for the obese dogs. However, no association between Pd and LA/Ao could be identified in patients belonging to the O, O+CD and H categories. Thus, we have demonstrated that obese dogs, regardless of their valvular competency status, present high Pd values, suggesting an impaired propagation of atrial electrical impulse.

show abstract

Section: Methodsmentioning

confidence: 99%

P wave dispersion in obese dogs with and without mitral valve disease

et al. 2018

View full text Add to dashboard Cite

show abstract

Thoracoscopic pericardiectomy: A feasibility study and impact on cardiac volumetry in healthy horses

Silva¹,

Meirelles²,

Castro³

et al. 2019

Equine Veterinary Education

View full text Add to dashboard Cite

SummaryThis study was conceived to evaluate the feasibility of a thoracoscopic technique intended for partial pericardiectomy in horses and how cardiac volumes are influenced by such procedure in an immediate and mid‐term perspective. Thoracoscopic pericardiectomy, which is known as a minimally invasive technique, was performed in six healthy horses. Echocardiographic evaluation was performed in every horse at different times, before and after the procedure. According to the area‐length method, the following parameters were evaluated: maximum left atrial volume, minimum left atrial volume, left ventricular volume in systole and left ventricular volume in diastole. These variables were used to calculate the ejection fraction of the left atrium and left ventricle. After 28 days, repeated thoracoscopy was performed to inspect the thoracic cavity. Pericardiectomy was successfully performed in all horses, with post‐operative complication documented in only one animal. After 28 days, adhesion was observed in two animals, located between the epicardium and the thoracic wall, without however impairing cardiac function. Pericardial window was broad and well delimited in all horses, without impairing cardiac function. The thoracoscopic pericardiectomy was feasible in all horses. Although a mild reduction in cardiac volumes was documented in the first 72 h after surgery, the procedure did not impair cardiac filling and emptying in the mid‐term perspective. Future studies are warranted to investigate how this technique performs in horses with pericardial diseases.

show abstract

Echocardiographic evaluation of the left atrium of healthy dogs using the conventional M-mode and the bidimensional mode

Cited by 2 publications

References 17 publications

P wave dispersion in obese dogs with and without mitral valve disease

P wave dispersion in obese dogs with and without mitral valve disease

Thoracoscopic pericardiectomy: A feasibility study and impact on cardiac volumetry in healthy horses

Contact Info

Product

Resources

About