Mediastinal Veins and Anomalies

Chest Imaging ◽  
2019 ◽  
pp. 539-543
Author(s):  
Sanjeev Bhalla
Keyword(s):  
Inferior Vena Cava ◽  
Pulmonary Vein ◽  
Right Atrium ◽  
Superior Vena ◽  
Vena Cava ◽  
Central Line ◽  
Normal Connection ◽  
Imaging Findings ◽  
Systemic Vein ◽  
Pericardiophrenic Vein

The chapter titled abnormalities of systemic veins discusses a series of mediastinal venous anomalies and tributaries that may produce confusing imaging findings. Such findings may be seen on a radiograph that shows an abnormal course of a central line or catheter in one of these anomalous vessels. The more frequently encountered systemic vein variants are presented, namely left superior vena cava (SVC) and azygous continuation of an interrupted inferior vena cava (IVC). In these conditions the normal connection of a right-sided vena cava to right atrium may be altered. Commonly encountered venous tributaries, including the left superior intercostal vein (which produces the aortic nipple on radiography), the left pericardiophrenic vein, and systemic to pulmonary vein collaterals will also be included. The latter may result in right-to-left shunting and cyanosis.

scholarly journals Failure of Femoral Access to Electrophysiological Evaluation Due to Aplasia of the Inferior Vena Cava

2016 ◽  
Vol 10 ◽  
pp. CMC.S38153
Author(s):  
Mariana S. Parahuleva ◽  
Mehmet Burgazli ◽  
Nedim Soydan ◽  
Wolfgang Franzen ◽  
Norbert Guttler ◽  
...  
Keyword(s):  
Inferior Vena Cava ◽  
Superior Vena Cava ◽  
Right Atrium ◽  
Inferior Vena ◽  
Superior Vena ◽  
Vena Cava ◽  
Azygos Vein ◽  
Interesting Case ◽  
Hepatic Veins ◽  
Femoral Access

We report an interesting case of a man with a persistent left superior vena cava (PLSVC) with left azygos vein who underwent electrophysiological evaluation. Further evaluation revealed congenital dilated azygos vein, while a segment connecting the inferior vena cava (IVC) to the hepatic vein and right atrium was missing. The azygos vein drained into the superior vena cava, and the hepatic veins drained directly into the right atrium. The patient did not have congenital anomalies of the remaining thoracoabdominal vasculature.

Hemodynamics Characteristics of a Four-Way Right-Atrium Bypass Connector With an Optimized Central Diverter

2018 ◽  
Author(s):  
Elizabeth Mack ◽  
Jakin Jagani ◽  
Alexandrina Untaroiu
Keyword(s):  
Pulmonary Artery ◽  
Inferior Vena Cava ◽  
Stagnation Point ◽  
Superior Vena Cava ◽  
Right Atrium ◽  
Power Loss ◽  
Inferior Vena ◽  
Superior Vena ◽  
Fontan Procedure ◽  
Vena Cava

The most common surgical procedure used to treat right ventricular heart failure is the Fontan procedure, which connects the superior vena cava and the inferior vena cava directly to the left and right pulmonary arteries bypassing the right atrium. Many studies have been performed to improve the Fontan procedure. Research has been done on a four-way connector that can both passively and actively improve flow characteristics of the junction between the Superior Vena Cava (SVC), Inferior Vena Cava (IVC), Left Pulmonary Artery (LPA) and Right Pulmonary Artery (RPA), using an optimized connector and dual propeller system. However, the configuration of these devices do not specify propeller motor placement and has a stagnation point in the center of the connector. This study focuses on creating a housing for the motor in the center of the connector to reduce the stagnation area and further stabilize the propellers. To do this, we created a program in ANSYS that utilizes the design-of-experiment (DOE) function to minimize power-loss and stagnation points in the connector for a given geometry. First, a CFD model is created to simulate the blood flow inside the connector with different housing geometries. The shape and size of the housing are used as parameters for the DOE process. In this study, an enhanced central composite design technique is used to discretize the design space. The objective functions in the DOE are red blood cell residence time and power loss. It was confirmed that the addition of the housing did decrease the size of the stagnation point. In fact, the housing added in stabilizing the flow through the connector by creating a more defined flow path. Because the flowrates from the IVC and SVC are not the same, the best configuration for the housing was found to be asymmetric along the axis of the pulmonary artery. While this is a continuation of previous studies, the creation of an optimized housing for the motors for the propellers makes implementation of the propeller idea more viable in a real life situation. The added stability of the propellers provided by the housing can also decrease the risk of propeller failure due to rotordynamic instability.

Intravascular and intracardiac blood temperatures in man

1962 ◽  
Vol 17 (4) ◽  
pp. 706-708 ◽  
Author(s):  
Skoda Afonso ◽  
George G. Rowe ◽  
Cesar A. Castillo ◽  
Charles W. Crumpton
Keyword(s):  
Pulmonary Artery ◽  
Inferior Vena Cava ◽  
Left Atrium ◽  
Superior Vena Cava ◽  
Right Atrium ◽  
Inferior Vena ◽  
Superior Vena ◽  
Vena Cava ◽  
Vena Cava Superior ◽  
Made In

Intracardiac and intravascular blood temperatures were measured in a group of 17 afebrile patients undergoing cardiac catheterization. Using a cardiac catheter with a thermistor mounted at the tip, measurements were made in the following locations: different levels of the inferior vena cava, the superior vena cava, the renal, hepatic, and internal jugular veins, the right atrium, pulmonary artery and pulmonary artery wedge position, coronary sinus and right ventricle, and the left atrium and pulmonary veins (in subjects with atrial septal defects or patent foramen ovale). Data obtained confirm and extend observations made by other investigators. The blood temperature in the pulmonary artery, pulmonary artery wedge, left atrium, and pulmonary vein were found to be very nearly the same. Furthermore, temperature recordings made in different sites of the inferior vena cava, superior vena cava, right atrium, and pulmonary artery show variations phasic with respiration. The mechanism of these thermal variations is discussed. Submitted on February 5, 1962

scholarly journals Right Upper Lobe Partial Anomalous Pulmonary Venous Connection

2014 ◽  
Vol 2014 ◽  
pp. 1-3 ◽  
Author(s):  
Christos Tourmousoglou ◽  
Christina Kalogeropoulou ◽  
Efstratios Koletsis ◽  
Nikolaos Charoulis ◽  
Christos Prokakis ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Right Atrium ◽  
Venous Return ◽  
Superior Vena ◽  
Pulmonary Veins ◽  
Vena Cava ◽  
Systemic Vein ◽  
Anomalous Pulmonary Venous Return ◽  
The Right ◽  
Anomalous Pulmonary Venous Connection

Partial anomalous pulmonary venous return (PAPVR) is a left-to-right shunt where one or more, but not all, pulmonary veins drain into a systemic vein or the right atrium. We report a case of a 45-year-old male with PAPVR to superior vena cava which was incidentally discovered during a right lower bilobectomy for lung cancer.

scholarly journals PARTICULARITIES OF SCIMITAR SYNDROME IN ADULT PATIENTS

2021 ◽  
Vol 9 (5) ◽  
pp. 1274-1278
Author(s):  
Soumia Faid ◽  
◽  
Amine Maliki Alaoui ◽  
Nadif Maryam ◽  
Liban Ibrahim ◽  
...  
Keyword(s):  
Inferior Vena Cava ◽  
Right Atrium ◽  
Inferior Vena ◽  
Superior Vena ◽  
Pulmonary Veins ◽  
Vena Cava ◽  
Venous Drainage ◽  
Scimitar Syndrome ◽  
Chest X Ray ◽  
The Right

Scimitar syndrome or Felsons veno-lobar syndrome is a very rare congenital disease characterized by a combination of cardiopulmonary abnormalities, including partial right-sided pulmonary venous drainage to the inferior vena cava, the inferior cavo-atrial junction, or low on the right atrium. We report the case of a 53-year-old female patient who presented with recent gradually worsening dyspnea. The diagnosis was suspected on the chest x-ray and confirmed on Cardiac echography andComputed Tomography scan that showed a wide collector gathering the three right superior pulmonary veins that joins the lower part of the superior vena cava, thus joining the right atrium while the right inferior pulmonary vein is drained into the inferior vena cava. The patient was treated surgically by performing a derivation of the right superior pulmonary venous collector to the left atrium with a tricuspid annuloplasty with a good outcome.

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