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	Provedor de dados BJMBR (2) Autor Koehler,N.R. (2) Acevedo,L.A. (1) Figueiredo,C.E.P. (1) Rabin,M. (1) Ribeiro,A.C.M. (1) Sukienik,B.J. (1) Zouvi,J.P. (1) Mais... Palavra-chave Arrhythmia (1) Arterial blood pressure fluctuations in the short term (1) Arterial blood pressure measurement technique (1) Arterial blood pressure oscillations (1) Blood pressure (1) Electrocardiography (1) Long QT syndrome (1) QT interval (1) Venous congestion (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2004 (1) 2002 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última An analysis of the electrocardiogram QT interval BJMBR Koehler,N.R.; Zouvi,J.P.; Acevedo,L.A.; Sukienik,B.J.; Rabin,M.. No reports testing the efficacy of the use of the QT/RR ratio <1/2 for detecting a normal QTc interval were found in the literature. The objective of the present study was to determine if a QT/RR ratio <=1/2 can be considered to be equal to the normal QTc and to compare the QT and QTc measured and calculated clinically and by a computerized electrocardiograph. Ratios (140 QT/RR) of 28 successive electrocardiograms obtained from 28 consecutive patients in a tertiary level teaching hospital were analyzed clinically by 5 independent observers and by a computerized electrocardiograph. The QT/RR ratio provided 56% sensitivity and 78% specificity, with an area under the receiver operator characteristic curve of 75.8% (95%CI: 0.68 to 0.84). The divergence... Tipo: Info:eu-repo/semantics/article Palavras-chave: Electrocardiography; Long QT syndrome; Arrhythmia; QT interval. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000100004 Serial blood pressure measurements BJMBR Koehler,N.R.; Figueiredo,C.E.P.; Ribeiro,A.C.M.. The objective of the present investigation was to study the effects of a 60-s interval of venous congestion between two noninvasive measurements of arterial blood pressure (ABP) on the fluctuation of ABP, assessed by the standard deviation of the differences between two readings. ABP was measured in 345 successive patients, at rest, four times each. For 269 participants, one pair of readings was obtained with a 60-s interval and the other pair without an interval. For 76 patients, the first pair was read at the same interval, and the second pair had venous congestion interposed and there was no waiting interval. There was no increased ABP oscillation, either when there was no interval between ABP readings, or when venous congestion was interposed compared... Tipo: Info:eu-repo/semantics/article Palavras-chave: Blood pressure; Arterial blood pressure oscillations; Venous congestion; Arterial blood pressure measurement technique; Arterial blood pressure fluctuations in the short term. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000500007 Registros recuperados: 2 Primeira ... 1 ... Última

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