Influência da redução da pré-carga sobre o índice de desempenho miocárdico (índice de Tei) e outros parâmetros Doppler ecocardiográficos da função ventricular esquerda

Barberato, Sílvio Henrique; Pecoits‐Filho, Roberto

doi:10.1590/s0066-782x2006000600004

Cited by 18 publications

(5 citation statements)

References 45 publications

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“…Although this conclusion comes from data derived from conventional Doppler mitral flow (known to be dependent on preload), our study showed only a marginal variation in the E'/A' ratio, this obtained by tissue Doppler and less susceptible to loading status 9 . Thus, on the one hand there may have been an insufficient number of cases to demonstrate significant differences in the E' and A' velocities that would corroborate the hypothesis of actual diastolic dysfunction, but, on the other hand, the decrease in E/A ratio after exercise may simply correlate with preload reduction.…”

Section: Passaglia Et Al Effects Of Prolonged Physical Exercisecontrasting

confidence: 69%

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Efeitos agudos do exercício físico prolongado: avaliação após ultramaratona de 24 horas

Passaglia¹,

Emed²,

Barberato³

et al. 2013

Arq. Bras. Cardiol.

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Section: Passaglia Et Al Effects Of Prolonged Physical Exercisecontrasting

confidence: 69%

“…The intraobserver variability for echocardiographic variables evaluated in this study has been previously published by our group 8,9 .…”

Section: Echocardiographymentioning

confidence: 96%

Efeitos agudos do exercício físico prolongado: avaliação após ultramaratona de 24 horas

Passaglia¹,

Emed²,

Barberato³

et al. 2013

Arq. Bras. Cardiol.

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“…It should be emphasized that DE can reveal clinically hidden ventricular dysfunctions by determining the ratios between systolic and diastolic ventricular measurements (diameter, area, volume) 11 . It is also said that the TEI index can assess the ventricular systolic function 3,19 . DE can also offer information that helps detect pulmonary hypertension 7 and forecast survival 14 in rats.…”

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confidence: 99%

Características fisiopatológicas do modelo de insuficiência cardíaca pós-infarto do miocárdio no rato

Tucci¹

2011

Arq. Bras. Cardiol.

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Congestive heart failure (CHF) caused by myocardial infarction in rats is the most commonly used experimental model to study the congestive heart failure syndrome. Following myocardial necrosis, the manifestations observed in rats very satisfactorily reproduce the findings in humans with cardiac decompensation and substantiate the study of CHF pathogenesis, pathophysiology, and treatment. Two features are inadequate in the model: the high mortality rate in the first 24 hours after coronary occlusion, and the considerable diversity of myocardial infarct sizes. In this review we described methodological and pathophysiological aspects of the model, concluding with a reference to an alternative technique, which uses radio frequency electric current to produce myocardial necrosis, and evolves with low mortality rates and homogeneous infarct sizes.For years, congestive heart failure (CHF) has been among the most investigated topics in cardiology. Besides the information obtained in humans, contribution made by the research conducted in laboratory animals is also noteworthy. Among the several experimental models available, the most used is that which promotes a congestive heart syndrome by the induction of myocardial necrosis in rats. Its current popularity and the foreseen increased interest in this model stress the importance of describing the pathophysiological characteristics after myocardial infarction (MI) in rats. Recently, a valuable literature review on the rat myocardial infarction model was published in the Arquivos Brasileiros de Cardiologia 1 .Although useful for the assessment of the congestive syndrome and the myocardial remodeling that occurs in the remaining cardiac muscle, the pathophysiological process established in rats after coronary artery ligation is not analogous to what happens in human coronary syndromes. The model lacks the arterial lesions that determine the distinctive clinical profile of human coronary artery disease: arrhythmias, transient ischemia, and recurrence of coronary occlusion, which are absent in laboratory animals.Occlusion of the anterior interventricular coronary artery is the strategy most frequently used for the induction of MI.The electrocardiogram 2 and the echocardiogram [3][4][5][6][7][8][9][10][11][12][13][14][15] are noninvasive methods capable of identifying the area of necrosis or scarring. Although it identifies the presence of an MI-dependent electrically inactive area, the ECG is not a method that can quantify the infarction area 2 . The echocardiogram can determine the presence and the size of the MI with very good sensitivity [3][4][5][6][7][8][9][10][11][12][13][14][15] , even in periods as early as two days after necrosis, and it also provides information about deviant atrial and ventricular function. The best method for post-mortem diagnosis of MI depends on the stage in which the autopsy occurs. In the first days after myocardial necrosis, the histopathologic exam may be inconclusive as to the limits of the necrotic area. For this phase, the triphe...

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“…It is vital to determine the volume to be taken for ultrafiltration (10) . Through dry weight, residual diuresis and the amount of hydric intake, the nurse controls the hydric balance and evaluates the patients hydration.…”

Section: Resultsmentioning

confidence: 99%

Elaboração de um instrumento da assistência de enfermagem na unidade de hemodiálise

Oliveira

Ribeiro

et al. 2008

Acta paul. enferm.

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This study aimed at developing an instrument to record nursing assistance systematization in a hemodialysis unit. For this development, we used the instrument formulated from literature on nursing diagnosis in nephropathic patients. The record instrument has been analyzed according to: layout and process facilitation. The process relied on the Basic Human Needs Theory and the taxonomy of the North American Nursing Diagnosis Association. The instrument has been facilitating the implementation of the nursing process in the hemodialysis unit. It was possible to record the data in a organized and concise fashion and use key information to plan and evaluate the assistance offered.

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Influência da redução da pré-carga sobre o índice de desempenho miocárdico (índice de Tei) e outros parâmetros Doppler ecocardiográficos da função ventricular esquerda

Abstract: The Tei index was affected by hemodialysis-induced preload alterations, as well as other mitral inflow Doppler-derived parameters. The diastolic parameters of mitral annulus Doppler tissue were independent of preload, while systolic velocities suggested improved systolic function.

Cited by 18 publications

References 45 publications

Efeitos agudos do exercício físico prolongado: avaliação após ultramaratona de 24 horas

Efeitos agudos do exercício físico prolongado: avaliação após ultramaratona de 24 horas

Características fisiopatológicas do modelo de insuficiência cardíaca pós-infarto do miocárdio no rato

Elaboração de um instrumento da assistência de enfermagem na unidade de hemodiálise

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