scholarly journals Central venous pressure from common iliac vein reflects right atrial pressure

1998 ◽  
Vol 45 (8) ◽  
pp. 798-801 ◽  
Author(s):  
Abdulaziz Alzeer ◽  
Subhash Arora ◽  
Ziauddin Ansari ◽  
Desouky F. Fayed ◽  
Mohamed Naguib
Keyword(s):  
Central Venous Pressure ◽  
Venous Pressure ◽  
Iliac Vein ◽  
Atrial Pressure ◽  
Right Atrial ◽  
Right Atrial Pressure ◽  
Common Iliac Vein ◽  
Central Venous

Effect of thoracic duct drainage on hydrostatic pulmonary edema and pleural effusion in sheep

1991 ◽  
Vol 71 (1) ◽  
pp. 314-316 ◽  
Author(s):  
S. J. Allen ◽  
R. E. Drake ◽  
G. A. Laine ◽  
J. C. Gabel
Keyword(s):  
Pleural Effusion ◽  
Central Venous Pressure ◽  
Pulmonary Edema ◽  
Thoracic Duct ◽  
Left Atrial ◽  
Venous Pressure ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Central Venous ◽  
Pulmonary Arterial

Positive end-expiratory pressure (PEEP) increases central venous pressure, which in turn impedes return of systemic and pulmonary lymph, thereby favoring formation of pulmonary edema with increased microvascular pressure. In these experiments we examined the effect of thoracic duct drainage on pulmonary edema and hydrothorax associated with PEEP and increased left atrial pressure in unanesthetized sheep. The sheep were connected via a tracheostomy to a ventilator that supplied 20 Torr PEEP. By inflation of a previously inserted intracardiac balloon, left atrial pressure was increased to 35 mmHg for 3 h. Pulmonary arterial, systemic arterial, and central venous pressure as well as thoracic duct lymph flow rate were continuously monitored, and the findings were compared with those in sheep without thoracic duct cannulation (controls). At the end of the experiment we determined the severity of pulmonary edema and the volume of pleural effusion. With PEEP and left atrial balloon insufflation, central venous and pulmonary arterial pressure were increased approximately threefold (P less than 0.05). In sheep with a thoracic duct fistula, pulmonary edema was less (extra-vascular fluid-to-blood-free dry weight ratio 4.8 +/- 1.0 vs. 6.1 +/- 1.0; P less than 0.05), and the volume of pleural effusion was reduced (2.0 +/- 2.9 vs. 11.3 +/- 9.6 ml; P less than 0.05). Our data signify that, in the presence of increased pulmonary microvascular pressure and PEEP, thoracic duct drainage reduces pulmonary edema and hydrothorax.

Abstract 13180: Ultrasound Jugular Venous Pressure Collapse Point Predicts Elevated Right Atrial Pressure on Right Heart Catheterization in Obese and Nonobese Patients

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Libo Wang ◽  
Jonathan Harrison ◽  
Elizabeth Dranow ◽  
Lillian Khor
Keyword(s):  
Heart Failure ◽  
Venous Pressure ◽  
Right Heart Catheterization ◽  
Atrial Pressure ◽  
Right Atrial ◽  
Right Atrial Pressure ◽  
Heart Catheterization ◽  
Point Of Care Ultrasound ◽  
Right Heart ◽  
Simplified Approach

Introduction: Accurate intravascular volume status assessment is central to heart failure management, but current non-invasive bedside techniques remain a challenge. Visual inspection of jugular venous pulsation (JVP) is used as a surrogate for central venous pressure (CVP). Studies have shown variability and inaccuracy of the JVP exam in estimating CVP or right atrial pressure (RAP). Published methods of RAP estimation through internal jugular vein (IJV) ultrasonography are either complex or require offline analysis. We validated a simplified approach to ultrasonography of the JVP (uJVP) as a method to predict RAP. Methods: Adult patients undergoing right heart catheterization (RHC) were enrolled prior for IJV imaging with point of care ultrasound (POCUS) device, Butterfly iQ™. The IJV was identified on ultrasound with the patient reclined (head of bed between 30-45°) and followed cranially until tapering smaller than the adjacent carotid artery throughout the entirety of the respiratory cycle. The height of this collapse point from the sternal angle added to 5 centimeters was defined as ultrasound JVP (uJVP). Results: 77 participants underwent uJVP assessment on the same day prior to RHC. Average BMI was 33 kg/m 2 . The area under the curve (AUC) of uJVP and RAP greater than 10mmHg on RHC was 0.879 (95% CI 0.759-0.931, p<0.001), with AUC of 0.972 and 0.818 for non-obese and obese subgroups respectively, and AUC of 0.876 for elevated RAP and pulmonary capillary wedge pressure (PCWP). A uJVP cutoff of 9 or higher was 85% sensitive and 72% specific at identifying RAP greater than 10mmHg. Conclusion: We developed and validated a novel technique identifying the uJVP using POCUS which correlates with invasive RAP regardless of obesity. This technique predicted combined elevated left and right sided intracardiac pressures. The uJVP’s potential to enhance the diagnostic value of the bed-side examination in an increasingly obese heart failure population warrants further research.

scholarly journals Understanding basic vein physiology and venous blood pressure through simple physical assessments

2019 ◽  
Vol 43 (3) ◽  
pp. 423-429 ◽  
Author(s):  
Etain A. Tansey ◽  
Laura E. A. Montgomery ◽  
Joe G. Quinn ◽  
Sean M. Roe ◽  
Christopher D. Johnson
Keyword(s):  
Blood Pressure ◽  
Cardiac Output ◽  
Central Venous Pressure ◽  
Venous Return ◽  
Venous Pressure ◽  
Venous Blood ◽  
Venous System ◽  
Arterial System ◽  
Right Atrial ◽  
Central Venous

An understanding of the complexity of the cardiovascular system is incomplete without a knowledge of the venous system. It is important for students to understand that, in a closed system, like the circulatory system, changes to the venous side of the circulation have a knock-on effect on heart function and the arterial system and vice versa. Veins are capacitance vessels feeding blood to the right side of the heart. Changes in venous compliance have large effects on the volume of blood entering the heart and hence cardiac output by the Frank-Starling Law. In healthy steady-state conditions, venous return has to equal cardiac output, i.e., the heart cannot pump more blood than is delivered to it. A sound understanding of the venous system is essential in understanding how changes in cardiac output occur with changes in right atrial pressure or central venous pressure, and the effect these changes have on arterial blood pressure regulation. The aim of this paper is to detail simple hands-on physiological assessments that can be easily undertaken in the practical laboratory setting and that illustrate some key functions of veins. Specifically, we illustrate that venous valves prevent the backflow of blood, that venous blood pressure increases from the heart to the feet, that the skeletal muscle pump facilitates venous return, and we investigate the physiological and clinical significance of central venous pressure and how it may be assessed.

scholarly journals Impact of right atrial pressure as venous pressure on fractional flow reserve calculation in patients with hemodialysis

2013 ◽  
Vol 34 (suppl 1) ◽  
pp. P3970-P3970 ◽  
Author(s):  
H. Takashima ◽  
A. Kurita ◽  
Y. Toda ◽  
A. Watanabe ◽  
K. Waseda ◽  
...  
Keyword(s):  
Fractional Flow Reserve ◽  
Venous Pressure ◽  
Atrial Pressure ◽  
Right Atrial ◽  
Right Atrial Pressure ◽  
Fractional Flow ◽  
Flow Reserve

Reliability of Central Venous Pressure as an Indicator of Left Atrial Pressure

CHEST Journal ◽  
1971 ◽  
Vol 59 (2) ◽  
pp. 169-173 ◽  
Author(s):  
Hubert Bell ◽  
David Stubbs ◽  
David Pugh
Keyword(s):  
Central Venous Pressure ◽  
Left Atrial ◽  
Venous Pressure ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Central Venous
Sign in / Sign up

Export Citation Format

Share Document