Feline hypertrophic cardiomyopathy: an echocardiographic approach

Silva, A.C.; Muzzi, Ruthnéa Aparecida Lázaro; Oberlender, Guilherme; Nogueira, Raírys Cravo; Muzzi, Leonardo Augusto Lopes

doi:10.4067/s0301-732x2013000100002

Cited by 3 publications

(4 citation statements)

References 36 publications

(54 reference statements)

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“…Those in the control group consisted of healthy cats that had a left ventricular wall thickness of < 6 mm and an LA diameter of < 16 mm assessed by echocardiography and showed no other cardiovascular and systemic illness. Cats with left ventricular wall thickness of ≥ 6 mm during end diastole were recruited into the HCM group [ 4 – 7 , 30 , 36 , 37 ]. Cats with and without congestive heart failure signs were accepted.…”

Section: Methodsmentioning

confidence: 99%

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Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography

Kiatsilapanan

Surachetpong

2020

BMC Vet Res

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Background Left atrial (LA) function plays an important role in diastolic dysfunction in cats with hypertrophic cardiomyopathy (HCM). Two-dimensional speckle tracking echocardiography (2D-STE) is a technique for assessing LA function. This study aimed to evaluate the LA function in HCM cats compared to normal cats, using 2D-STE. Results Seventeen client-owned cats affected with HCM and twenty healthy control cats were studied. Conventional echocardiographic and 2D-STE variables were measured and compared between groups (control and HCM groups). Variability of the peak atrial longitudinal strain (PALS) displayed good reproducibility with 4.7% intra-observer and 14% inter-observer repeatability. The mean value of PALS in the HCM group (13.16 ± 8.64) was lower than that in the control group (28.54 ± 10.31) (P < 0.001). PALS was lowest in the LA roof region. The atrial longitudinal strains of septal and lateral regions were significantly lower in the HCM group than in the normal group. The PALS correlated with the percentage of the LA fractional shortening (LA-FS) (r = 0.538, P = 0.001), the percentage of the LA ejection fraction (LA-EF) (r = 0.797, P < 0.001), and the LA fractional area change (FAC) (r = 0.746, P < 0.001). Conclusions PALS is a feasible and reproducible method to evaluate the LA function in cats affected with HCM.

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Section: Methodsmentioning

confidence: 99%

“…An advanced diastolic dysfunction is related to clinical signs [ 2 ]. Some HCM cats may develop congestive heart failure, arterial thromboembolism, and sudden death [ 3 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography

Kiatsilapanan

Surachetpong

2020

BMC Vet Res

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“…In this context, hypertrophic cardiomyopathy (HCM) is considered one of the most common cardiac abnormalities in domestic cats and it often leads to the onset of cardiac heart failure (CHF) symptoms or even sudden death of asymptomatic animals (Ferasin, 2009;Silva et al, 2013). The physiopathological mechanism is primarily related to diastolic dysfunction which is responsible for HCM clinical symptoms, since an abnormal relaxation pattern can cause abnormal rise of ventricular filling pressure, hence an atrial enlargement (Côtè et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Mitral flow propagation velocity in non-sedated healthy cats

Silva

Muzzi

Oberlender

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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Mitral flow propagation velocity (Vp) is an index used to evaluate the left ventricular diastolic function. Its influence on human and small animal cardiopathies has been studied; however there are few reports evaluating this variable in domestic felines. In addition, there is a lack of studies in non-sedated healthy cats. Therefore, the purpose of this study was to establish values for Vp and its correlation with other echocardiographic indexes in non-sedated healthy cats in order to provide new perspectives related to diastolic function in this species. Twenty-six clinically healthy cats were submitted to echocardiography to assess the animals' cardiac conditions. Variables such as age, heart rate (HR), body surface area (BSA), initial (E mitral) and late (A mitral) ventricular filling waves, isovolumic relaxation time (IVRT) and E/IVRT relation were correlated to Vp. No proven relation between any of these variables and Vp was observed in this present study, except for HR and BSA. In the variability analysis, higher values were verified for inter-observer analysis. This study concludes that Vp proved to be an useful index for estimating left ventricular relaxation in non-sedated healthy domestic cats and provides reference ranges for this variable.

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“…Diastolic dysfunction can occur secondary to an increased left ventricular wall thickness. Some HCM cats may develop congestive heart failure or arterial thromboembolism [4].…”

mentioning

confidence: 99%

Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography

Kiatsilapanan¹,

Surachetpong

2020

Preprint

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Background : Left atrial (LA) function plays an important role in diastolic dysfunction in cats with hypertrophic cardiomyopathy (HCM). Two-dimensional speckle tracking echocardiography (2D-STE) is a novel technique for assessing LA function. This study aimedto evaluate changes in the LA function inHCM cats compared to normal cats, using 2D-STE. Results: Seventeen client-owned cats affected with HCM and twenty healthy control cats. Conventional echocardiographic and 2D-STE variables were measured and compared between groups (the normal and HCM groups). The difference between two groups was compared by using the independent Student’s t-test. A p -value less than 0.05 was considered significant. Variability from the 2D-STE variables tests displayed good reproducibility (coefficient of variation ≤15%). The mean value of peak atrial longitudinal strain (PALS) in the HCM group (13.16 ± 8.64) was lower in the control group (28.54 ±10.31) ( p < 0.001). PALS was lowest at the LA roof region. The atrial longitudinal strain of septal and lateral regions was significantly lower in the HCM group than the normal group. PALS correlated with the percentage of the LA fractional shortening (LA-FS) (r=0.538, p =0.001), the percentage of the LA ejection fraction (LA-EF) (r =0.797, p <0.001), and the LA fractional area change (FAC) (r =0.746, p <0.001). Conclusions: PALS can be used to evaluate changes in theLA function in HCM cats. It is a reproducible method for assessing the LA function in cats affected with HCM. Keywords cats; heart; left atrium; strain

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Feline hypertrophic cardiomyopathy: an echocardiographic approach

Cited by 3 publications

References 36 publications

Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography

Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography

Mitral flow propagation velocity in non-sedated healthy cats

Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography

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