Evaluation of dilated cardiomyopathy by pulsed Doppler echocardiography

Gardin, Julius M.; Iseri, Lloyd T.; Elkayam, Uri; Tobis, Jonathan M.; Childs, W. J.; Burn, Cora S.; Henry, Walter L.

doi:10.1016/0002-8703(83)90652-x

Cited by 98 publications

(16 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…18,19 In the apical five-chamber view, the pulsed Doppler sample volume was placed in the LV, 2.5 cm apical of the coaptation point of the mitral valve and 1 cm from the interventricular septum, near the centerline of color flow. We refer to this point as the apical of the mitral valve point (AMV point).…”

Section: Pulsed Dopplermentioning

confidence: 99%

“…We measured peak and mean systolic LV ejection velocity, acceleration time (the time from onset of ejection until peak velocity), and mean acceleration (peak velocity/acceleration time). 18,19 Because systolic anterior motion often begins at leaflet coaptation, we assessed acceleration in early ejection by measuring the elapsed time from ejection onset to a velocity of 40 and 60 cm/s, as shown in Fig 2. We measured the preejection period as the time from the beginning of the ECG Q wave to the onset of ejection and the ejection time as the time from onset of ventricular ejection until the end of ejection. The RR interval was determined for each measured beat, and systolic time intervals were corrected for heart rate by use of Weissler's formulas.…”

Section: Selection Of Recorded Pulsed Doppler Tracings For Analysismentioning

confidence: 99%

See 1 more Smart Citation

Mechanism of Benefit of Negative Inotropes in Obstructive Hypertrophic Cardiomyopathy

1998

View full text Add to dashboard Cite

Background-Drugs with negative inotropic effect are widely used to decrease obstruction in hypertrophic cardiomyopathy (HCM). However, the mechanism of therapeutic benefit has not been studied. Methods and Results-We used M-mode, two-dimensional, and pulsed Doppler echocardiography to study 11 patients with obstructive HCM before and after medical elimination of left ventricular outflow tract obstruction. We measured 148 digitized pulsed Doppler tracings recorded in the left ventricular cavity 2.5 cm apical of the mitral valve. Successful treatment slowed average acceleration of left ventricular ejection by 34% (Pϭ.001). Mean time to peak velocity in the left ventricle was prolonged 31% (Pϭ.001). Mean time to an ejection velocity of 60 cm/s was prolonged 91% (Pϭ.001). Before treatment, left ventricular ejection velocity peaked in the first half of systole; after successful treatment, it peaked in the second half (Pϭ.001). In contrast, after treatment, we found no change in peak left ventricular ejection velocity. We also found no change in the distance between the mitral coaptation point and the septum, as measured in two planes, indicating no treatment-induced alteration of this anatomic relationship. Conclusions-Medical

show abstract

Section: Pulsed Dopplermentioning

confidence: 99%

Section: Selection Of Recorded Pulsed Doppler Tracings For Analysismentioning

confidence: 99%

Mechanism of Benefit of Negative Inotropes in Obstructive Hypertrophic Cardiomyopathy

1998

View full text Add to dashboard Cite

show abstract

“…Uma de suas utilidades é a complementação da avaliação da função sistólica cardíaca por meio da avaliação dos fluxos das valvas aórtica e pulmonar (PETRUS et al, 2010). Estudos realizados em pessoas (GARDIN et al, 1993;IMAMURA et al, 1993) mostraram que a ecocardiografia Doppler tem a vantagem de refletir, quantitativamente, a função de todo o ventrículo esquerdo, enquanto a fração de encurtamento do ventrículo esquerdo, medida pelo modo unidimensional, reflete o valor da função de uma área específica do coração. Desta maneira, seria interessante que as novas pesquisas com ecocardiografia em cavalos começassem a aferir e quantificar estes parâmetros.…”

Section: Discussionunclassified

Medidas ecocardiográficas de cavalos de tração da região metropolitana de Curitiba-PR

et al. 2015

View full text Add to dashboard Cite

ResumoPara manter o desempenho dos cavalos durante o exercício físico o coração se adapta às variações das atividades metabólicas, o que resulta em adaptações do músculo cardíaco. Desta maneira, o uso da ecocardiografia permite avaliar possíveis adaptações cardíacas e falhas no bombeamento sanguíneo. Pouco se sabe sobre alterações ecocardiográficas em cavalos de tração de materiais recicláveis, que puxam carroças, cujas condições gerais de saúde e manejo quase sempre são inadequadas para o tipo de exercício físico ao qual são submetidos. Objetivou-se estabelecer valores ecocardiográficos para cavalos de carroceiros. Dezenove cavalos sem raça definida foram submetidos ao exame ecocardiográfico, e valores da distância do ponto E (maior abertura da valva mitral) ao septo interventricular; diâmetro da cavidade do ventrículo esquerdo; espessura do septo interventricular e espessura da parede livre do ventrículo esquerdo durante a sístole e diástole; fração de encurtamento e ejeção foram obtidos pelo modo-M. No modo bidimensional foram avaliados o diâmetro da valva aórtica e átrio esquerdo, além de sua relação. Foram avaliadas as velocidades do fluxo de sangue na artéria pulmonar e aorta e valva mitral por meio do Doppler pulsado e/ou contínuo, além de detectar possíveis refluxos por meio do Doppler colorido. Neste estudo ficam estabelecidos os valores médios dos parâmetros ecocardiográficos para os 19 cavalos estudados que fazem trabalho de tração puxando carroças. Não houve valores significativos que constatem remodelamento cardíaco inadequado, disfunção ventricular esquerda com consequente perda de desempenho no exercício ou doenças que prejudiquem o rendimento do animal no trabalho. Palavras-chave: Cardiologia eqüina, ecocardiografia, carroceiro, tração animal AbstractIn order to maintain the horses' performance during the exercise, their hearts adapt to the variations on metabolic activity, resulting in muscular adaptation. Thus, echocardiography allows to assess on both eventual adaptations of heart tissue and impairment of the ability to pump blood. Little is yet known about echocardiography in cart horses, whose general conditions of health and treatment are often inappropriate to the type of exercise they are submitted to. The goal of this study was to establish echocardiographic numbers for cart horses. Nineteen mongrel horses were submitted for echocardiographic examination, and values of the distance from E point (maximum opening mitral valve) to the interventricular septum; diameter of left ventricle cavity, interventricular septum thickness and thickness of left ventricle free wall during systole and diastole, fractional shortening and ejection fraction were obtained by M-mode. In the 2D images, diameter of the aortic valve and left atrium were evaluated, and their relationship. The velocities of the blood flow were evaluated in aorta and pulmonary artery and the mitral valve by

show abstract

“…Bei geringgradiger Insuffizienz bewegen sich die Werte im unteren Arbeitsbereich oder sind geringgradig erniedrigt. Stark erniedrigte Blutflussvolumina bei Hunden mit linksventrikulärer Dilatation wurden schon früher in der Aorta ascendens gemessen (Gardin et al 1983). Die unterschiedlichen Veränderungen im systolischen und diastolischen Blutflussvolumenanteil bei AVI einerseits und MVI andererseits verdeutlichen am besten die Genese der Störungen in der Hämody-namik der ACC.…”

Section: Materials Und Methodeunclassified

Doppler sonographic examination of the common carotid artery in horses with heart disease

Schmitz¹,

Grabner²

2008

PHK

View full text Add to dashboard Cite

Evaluation of dilated cardiomyopathy by pulsed Doppler echocardiography

Cited by 98 publications

References 23 publications

Mechanism of Benefit of Negative Inotropes in Obstructive Hypertrophic Cardiomyopathy

Mechanism of Benefit of Negative Inotropes in Obstructive Hypertrophic Cardiomyopathy

Medidas ecocardiográficas de cavalos de tração da região metropolitana de Curitiba-PR

Doppler sonographic examination of the common carotid artery in horses with heart disease

Contact Info

Product

Resources

About