superior vena cava

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 [ve´nah] (pl. ve´nae) (L.)
vein (see also Appendix 2-6).
vena ca´va the inferior vena cava and superior vena cava considered as a unit. See Appendix 2-6.
inferior vena cava the venous trunk for the lower extremities and the pelvic and abdominal viscera; it empties into the right atrium of the heart. See Appendix 2-6.
superior vena cava the venous trunk draining blood from the head, neck, upper extremities, and chest; it empties into the right atrium of the heart. See Appendix 2-6.

superior vena cava

the second largest vein of the body, returning deoxygenated blood from the upper half of the body to the right atrium. It is about 2 cm in diameter and 7 cm long. The section of the superior vena cava closest to the heart composes about one half of the vessel's length and is within the pericardial sac, covered by the serous pericardium. It has no valves. Compare inferior vena cava.

su·pe·ri·or ve·na ca·va

(sŭ-pēr'ē-ŏr vē'nă kā'vă)
Returns blood from the head and neck, upper limbs, and thorax to the posterosuperior aspect of the right atrium; formed in the superior mediastinum by union of the two brachiocephalic veins.
Synonym(s): vena cava superior [TA] , precava.

superior vena cava

The final venous channel that returns blood from the head, shoulders, upper limbs and thoracic structures other than the lungs to the upper chamber (atrium) of the right side of the heart.

Superior vena cava

The major vein that carries blood from the upper body to the heart.

vena cava

vein trunks carrying deoxygenated blood from the body to the right atrium
  • inferior vena cava receiving blood from deep veins of legs and pelvis

  • superior vena cava receiving blood from head, neck, upper limbs and thorax

References in periodicals archive ?
Low Superior Vena Cava Flow and Intraventricular Haemorrhage in Preterm Infants.
Superior vena cava (SVC) syndrome presenting as unilateral breast enlargement is rarely described.
Embolized air collection in the superior vena cava of "upright" sheep.
Key Words: congenital anomaly, persistent left superior vena cava, pulmonary artery catheter
An electrical lead from the pump is tunneled up the chest, and its sensor, an electrode that detects glucose oxidase, is placed at the junction of the superior vena cava and the right atrium.
Ash indicate that the Centros catheter provides highly acceptable flow rates at modest negative pressure without deterioration in flow rate over seven weeks of use, even with tips positioned in the superior vena cava rather than within the atrium.
Insertion of these catheters follows the same principles of CVC insertion, with the right internal jugular vein being the preferred insertion site due to easier catheterization, a relatively straight path to the superior vena cava and right atrium, high rates of cannulation success, and low rates of central venous stenosis (3, 4).
The CT scan that was acquired 70 seconds after the start of IV contrast administration showed a contrast agent deposit with a blood-contrast level in the dependent portion of the superior vena cava (Figure 1A) and the inferior vena cava (Figure 1B), dense opacification of the right portal and right hepatic veins (Figure 1C), contrast material pooling in the right renal parenchyma (Figure 1D), and a nonenhanced small abdominal aorta (Figure 1B, C, and D).
Key Words: balloon occlusion, basket, brachiocephalic, bullet, embolization, inferior vena cava, migration, percutaneous, superior vena cava, venotomy
9,20] One case of IPEH in the superior vena cava that caused obstructive symptoms has also been reported.
The patient's Superior Vena Cava, and right and left subclavian veins were occluded with blood clot.

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