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| http://dx.doi.org/10.1097/00007890-199702150-00024 | DOI Listing |
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Correlation between right atrial venous blood gasometry and cardiac index in cardiac surgery postoperative period.
Rev Bras Cir Cardiovasc
June 2011
Cardiovascular Surgery Service, Hospital Regional de Mato Grosso do Sul, Cardiovascular Surgery Service, University Hospital, Federal University of Mato Groso do Sul, Campo Grande, MS, Brasil.
Objective: To determine, even during postoperative period, the confiability of the cardiac index correlate with the data data given by a central atrial venous blood gasometry in patients who underwent cardiac surgery.
Methods: From the sample of arterial and venous blood of right atrium gathered in postoperative of cardiac surgery, it was determinated the hemoglobin concentration and the gasometric study through what was observed of the venous oxygen saturation (SvO2) and the partial pressure of oxygen from venous blood gathered in right atrium (PvO2), add to the calculation of artery-venous difference of the oxygen content--radial artery / right atrium (C( a-v )O2). Afterwards, these parameters were compared with the cardiac index determined by thermodilution.
The aetiology of hypoxaemia in chickens selected for rapid growth.
Comp Biochem Physiol A Mol Integr Physiol
May 2005
Department of Animal and Poultry Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, Canada S7N 5A8.
In comparison to other classes of chickens, broilers selected for rapid growth tend to be hypoxaemic, and many develop congestive heart failure (CHF). In order to explain the physiological mechanisms associated with hypoxaemia in fast-growing broiler chickens (Gallus gallus), this study examined several basic physiological parameters including the blood gas profile in arterial [left atrial (LA)] and mixed venous [right atrial (RA)] blood, systemic oxygen extraction ratio, and intrapulmonary shunt fraction. These parameters were further studied in the context of blood flow in the pulmonary circulation, structural characteristics of the lungs, and cardiac function [measured as cardiac index (CI)].
View Article and Find Full Text PDFPulmonary wedge pressures confirm pulmonary hypertension in broilers is initiated by an excessive pulmonary arterial (precapillary) resistance.
Poult Sci
April 2001
Department of Poultry Science, University of Arkansas, Fayetteville 72701, USA.
High retrograde pressure through the pulmonary venous system caused by failure of the left ventricle or left atrio-ventricular valve may result in the elevated pulmonary arterial pressure and right ventricular hypertrophy associated with pulmonary hypertension syndrome (PHS; ascites) in broiler chickens. In the present study, unanaesthetized male broilers from an ascites-resistant line, the base population from which the resistant line was derived, and a separate unselected line were used to determine whether changes in wedge pressure (thought to be similar to left atrial pressure) are predictive of differences in the pulmonary arterial pressure of clinically healthy and pre-ascitic broilers. Venous, right atrial, right ventricular, pulmonary arterial, and wedge pressures were obtained by inserting a catheter into a wing vein and progressively advancing the catheter into a pulmonary branch artery until the catheter tip became wedged in and occluded the flow through a terminal artery.
View Article and Find Full Text PDFHeparinless partial cardiopulmonary bypass for the repair of aortic trauma.
J Thorac Cardiovasc Surg
December 2000
Division of Cardiac Surgery and The R. Adams Cowley Shock Trauma Center, The University of Maryland School of Medicine, Baltimore, MD, USA.
Objective: We hypothesized that partial cardiopulmonary bypass with a heparin-bonded system would be a technically simple, effective adjunct for reducing paraplegia during repair of traumatic aortic rupture. It avoids the risk of heparin, but, unlike left atrial-arterial bypass, it can heat, cool, oxygenate, and rapidly infuse volume if needed.
Methods: A retrospective review was conducted of patients admitted for aortic trauma from July 1994 to December 1999.
Pulsed Doppler echocardiographic assessment of patterns of venous flow after the modified Fontan operation: potential clinical implications.
Cardiol Young
January 1998
Department of Paediatric Cardiology, Children's Hospital, Medical School Hannover, Germany.
To assess the effect of a modified Fontan operation on systemic venous blood flow and the hepatic circulation, we compared 11 patients having an atriopulmonary connection and 35 with total cavopulmonary anastomosis. The Doppler echocardiographic study of the caval venous, hepatic venous and portal venous flow was performed so as to calculate the pulsatility ratio and the variation of flow with respiration. All patients had undergone cardiac catheterization.
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