Pulse Pressure Variation
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Comparison of vena cava distensibility index and pulse pressure variation for the evaluation of intravascular volume in critically ill children
Abstract Objective: In this study, the authors aimed to evaluate the effectiveness of the vena cava distensibility index and pulse pressure variation as dynamic parameters for estimating intravascular volume in critically ill children. Methods: Patients aged 1 month to 18 years, who were hospitalized in the present study’s pediatric intensive care unit,
Jornal de Pediatria. Publicado em: 2022
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2. Evaluation of volume responsiveness by pulse pressure variability and inferior vena cava dispensability index at different tidal volumes by mechanical ventilation
This study investigated the effects of tidal volume (TV) on the diagnostic value of pulse pressure variation (PPV) and the inferior vena cava dispensability index (IVC-DI) for volume responsiveness during mechanical ventilation. In patients undergoing elective surgery with mechanical ventilation, different TVs of 6, 9, and 12 mL/kg were given for two min. Th
Braz J Med Biol Res. Publicado em: 29/08/2019
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3. Fatores associados à hipotensão ortostática em adultos: estudo ELSA-Brasil
Resumo: O objetivo foi investigar os fatores associados à presença de hipotensão ortostática em 14.833 indivíduos de 35-74 anos. Estudo transversal realizado com os dados da linha de base (2008-2010) do Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil). O teste postural foi realizado após repouso de 20 minutos na posição supina e adoção ativa d
Cad. Saúde Pública. Publicado em: 12/08/2019
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4. Pulse pressure variation and stroke volume variation under different inhaled concentrations of isoflurane, sevoflurane and desflurane in pigs undergoing hemorrhage
OBJECTIVES: Inhalant anesthesia induces dose-dependent cardiovascular depression, but whether fluid responsiveness is differentially influenced by the inhalant agent and plasma volemia remains unknown. The aim of this study was to compare the effects of isoflurane, sevoflurane and desflurane on pulse pressure variation and stroke volume variation in pigs un
Clinics. Publicado em: 2015-12
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5. Pulse Pressure Variation Patterns in a Swine Model of Hypovolemia under Spontaneous Breathing vs. Invasive Positive-Pressure Ventilation
RESUMO OBJETIVO: Este estudo foi realizado para obtenção do título de Mestre em Medicina, Novembro/2012-Julho/2013. A melhoria do débito cardíaco após a administração de fluidos é conhecida como a capacidade de resposta do fluido. Um parâmetro confiável para sua avaliação é a variação da pressão de pulso, cuja utilidade na previsão da capa
MedicalExpress (São Paulo, online). Publicado em: 2014-12
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6. Intraoperative fluid management in open gastrointestinal surgery: goal-directed versus restrictive
OBJECTIVE: The optimal strategy for fluid management during gastrointestinal surgery remains unclear. Minimizing the variation in arterial pulse pressure, which is induced by mechanical ventilation, is a potential strategy to improve postoperative outcomes. We tested this hypothesis in a prospective, randomized study with lactated Ringer's solution and 6% hy
Clinics. Publicado em: 2012-10
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7. Pulse pressure variation and prediction of fluid responsiveness in patients ventilated with low tidal volumes
OBJECTIVE: To determine the utility of pulse pressure variation (ΔRESP PP) in predicting fluid responsiveness in patients ventilated with low tidal volumes (V T) and to investigate whether a lower ΔRESP PP cut-off value should be used when patients are ventilated with low tidal volumes. METHOD: This cross-sectional observational study included 37 criticall
Clinics. Publicado em: 2012-07
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8. Vasodilation increases pulse pressure variation, mimicking hypovolemic status in rabbits
OBJECTIVE: To test the hypothesis that pulse pressure respiratory variation (PPV) amplification, observed in hypovolemia, can also be observed during sodium nitroprusside (SNP)-induced vasodilation. INTRODUCTION: PPV is largely used for early identification of cardiac responsiveness, especially when hypovolemia is suspected. PPV results from respiratory vari
Clinics. Publicado em: 2010
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9. Pulse oximetry wave variation as a noninvasive tool to assess volume status in cardiac surgery
OBJECTIVE: To compare variations of plethysmographic wave amplitude (ΔPpleth) and to determine the percent difference between inspiratory and expiratory pulse pressure (ΔPp) cutoff values for volume responsiveness in a homogenous population of postoperative cardiac surgery patients. INTRODUCTION: Intra-thoracic pressure variations interfere with stroke vol
Clinics. Publicado em: 2009-04
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10. Avaliação da responsividade cardiovascular por meio da variação de pulso com diferentes fluídos em modelo experimental de hemodiluição normovolêmica aguda / Assessment of cardiovascular responsiveness through variation in pulse with different fluids in an experimental model of acute normovolemic hemodilution
Background: Pulse pressure variation (PPV), have been shown to be useful tools to indicate fluid responsiveness in clinical and experimental studies. However, this parameter has not been adequately explored in situations of acute variation of blood viscosity, as happens in acute normovolemic hemodilution (ANH). The purpose of this research was to compare the
Publicado em: 2009
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11. Análise contínua de medidas de cateter de artéria pulmonar volumétrico, ecotransesofágico, variações da pressão arterial sistêmica e marcadores de hipoperfusão tissular no choque hemorrágico em suínos / Continuous analyses of pulmonary, volumetric artery catheter parameters, transesophageal echocardiography, pressure pulse variation, and biomarkers of tissue hypoperfusion during hemorrhagic shock in swine. Experimental study in swines
INTRODUÇÃO: Diferentes parâmetros hemodinâmicos, incluindo os indicadores estáticos de pré-carga cardíaca como o índice de volume diastólico final ventrículo direito (IVDFVD) e parâmetros dinâmicos como a variação de pressão de pulso (VPP) têm sido usados na tomada de decisão para considerar o processo da expansão volêmica em pacientes em
Publicado em: 2009
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12. Assessment of arterial pulse pressure variation in mechanically ventilated dogs with PEEP and ZEEP, submitted to volume load during abdominal surgery / Determinação da variação da pressão de pulso em cadelas mecanicamente ventiladas com e sem PEEP, submetidas à expansão volêmica durante cirurgia abdominal
Ao contrário dos indicadores estáticos, como a pressão venosa central e a pressão de oclusão da artéria pulmonar, a variação da pressão de pulso arterial tem se mostrado um indicador hemodinâmico preciso para a determinação da responsividade à administração de fluido. Objetivo: Este estudo objetivou mensurar a variação da pressão de pulso e
Publicado em: 2008