INTRODUCTION: Central venous pressure (CVP) is an important hemodynamic parameter, reflecting the patient's volume status. Although some studies of non-invasive evaluation of CVP by echocardiography exist, an exact quantitative method has not been described. OBJECTIVES: Analyzing several echocardiographic variables, the authors present an equation to calculate CVP with good statistical correlation with CVP measured invasively. MATERIAL AND METHODS: The study included 45 patients, 32 undergoing mechanical ventilation, 32 in sinus rhythm and 13 with atrial fibrillation. Patients underwent simultaneous CVP measurement and transthoracic Doppler echocardiography. Statistical analysis was performed using bivariate correlation and analysis of variance. RESULTS: Several echocardiographic parameters measured showed a good correlation with the measured CVP. Standardized coefficients were applied to them and an equation to calculate CVP was obtained (tricuspid E decelaration) x 0.11 + (RU/RA gradient) x 0.16 - (IVC variation). CONCLUSION: This new method seems reliable to evaluate non-invasively a hemodynamic parameter that until now has only been measured approximately by this approach.
INTRODUCTION: Central venous pressure (CVP) is an important hemodynamic parameter, reflecting the patient's volume status. Although some studies of non-invasive evaluation of CVP by echocardiography exist, an exact quantitative method has not been described. OBJECTIVES: Analyzing several echocardiographic variables, the authors present an equation to calculate CVP with good statistical correlation with CVP measured invasively. MATERIAL AND METHODS: The study included 45 patients, 32 undergoing mechanical ventilation, 32 in sinus rhythm and 13 with atrial fibrillation. Patients underwent simultaneous CVP measurement and transthoracic Doppler echocardiography. Statistical analysis was performed using bivariate correlation and analysis of variance. RESULTS: Several echocardiographic parameters measured showed a good correlation with the measured CVP. Standardized coefficients were applied to them and an equation to calculate CVP was obtained (tricuspid E decelaration) x 0.11 + (RU/RA gradient) x 0.16 - (IVC variation). CONCLUSION: This new method seems reliable to evaluate non-invasively a hemodynamic parameter that until now has only been measured approximately by this approach.
Authors: N Sathish; Naveen G Singh; P S Nagaraja; B M Sarala; C G Prabhushankar; Manasa Dhananjaya; N Manjunatha Journal: Ann Card Anaesth Date: 2016 Jul-Sep
Authors: Nchafatso Obonyo; Bernadette Brent; Peter Olupot-Olupot; Michael Boele van Hensbroek; Irene Kuipers; Sidney Wong; Kenji Shiino; Jonathan Chan; John Fraser; Job B M van Woensel; Kathryn Maitland Journal: Crit Care Date: 2017-05-03 Impact factor: 9.097