About: Cavoatrial junction

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The cavoatrial junction (CAJ) is the point at which the superior vena cava meets and melds into the superior wall of the cardiac right atrium. Both the superior and inferior vena cavae enter the right atrium, but only the superior entry is called the cavoatrial junction. This junction marks the inferior end of the superior vena cava, the continuation below that point being considered part of the heart.

Attributes	Values
rdf:type	place yago:WikicatVeinsOfTheTorso yago:BloodVessel105417975 yago:BodyPart105220461 yago:Part109385911 yago:PhysicalEntity100001930 yago:Structure105225602 yago:Thing100002452 yago:Tube105246511 yago:Vein105418717 yago:Vessel105397333
rdfs:label	Cavoatrial junction (en)
rdfs:comment	The cavoatrial junction (CAJ) is the point at which the superior vena cava meets and melds into the superior wall of the cardiac right atrium. Both the superior and inferior vena cavae enter the right atrium, but only the superior entry is called the cavoatrial junction. This junction marks the inferior end of the superior vena cava, the continuation below that point being considered part of the heart. (en)
foaf:depiction
dcterms:subject	Human anatomy Veins of the torso
Wikipage page ID	20419472 (xsd:integer)
Wikipage revision ID	1061465134 (xsd:integer)
Link from a Wikipage to another Wikipage	Cardiac tamponade Cardiac dysrhythmia Intervertebral disc Intravenous therapy Anatomical terms of location Carina of trachea Central venous catheter Heart Atrium (heart) Human anatomy Veins of the torso Thorax Inferior vena cava Radiography Superior vena cava Vertebra
sameAs	Cavoatrial junction Cavoatrial junction Cavoatrial junction Cavoatrial junction
dbp:wikiPageUsesTemplate	dbt:Circulatory-stub dbt:Cite_journal dbt:Short_description
thumbnail	wiki-commons:Special:FilePath/Diagram_of_the_human_heart_(cropped).svg?width=300
has abstract	The cavoatrial junction (CAJ) is the point at which the superior vena cava meets and melds into the superior wall of the cardiac right atrium. Both the superior and inferior vena cavae enter the right atrium, but only the superior entry is called the cavoatrial junction. This junction marks the inferior end of the superior vena cava, the continuation below that point being considered part of the heart. For purposes of radiographic visualization, the most reliable indicator of junction location is to find the carina, then observe the vertebrae it overlies. The junction will lie two vertebral body units (VBUs) below the carina, counting the single intervertebral disc between them, but not the disc below them. It has been demonstrated that the more ordinary method of looking for the "bulge" in the cardiac outline is unreliable, since cardiac or other thoracic pathology can shift the apparent position of that landmark. Hospitalized patients may need to receive solutions and medications that, if given through an ordinary intravenous therapy catheter, would severely damage both blood cells and the vascular system. In these cases, it is common to insert a central venous catheter. All such catheters placed for the purpose of venous access and being inserted in the upper body will ideally have the tip placed within the superior vena cava at or just above the cavoatrial junction. Passing the line through the junction and into the atrium is avoided by some practitioners, as they fear the result may be cardiac arrythmias and even cardiac tamponade, a potentially fatal outcome. However, other practitioners prefer the proximal RA and state that there is no evidence of harm. Modern catheter tip verification systems often rely on ECG readouts which correlate with tip position. A chest xray may still be obtained to confirm or when an ECG is contraindicated. (en)
gold:hypernym	Point
prov:wasDerivedFrom	wikipedia-en:Cavoatrial_junction?oldid=1061465134&ns=0
page length (characters) of wiki page	3024 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Cavoatrial_junction
is Link from a Wikipage to another Wikipage of	Peripherally inserted central catheter Hickman line
is foaf:primaryTopic of	wikipedia-en:Cavoatrial_junction

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