Pericardial sinus
The pericardial sinuses are impressions in the pericardial sac formed between the points where great vessels enter it.Script error: No such module "Infobox".Template:Template otherScript error: No such module "Check for unknown parameters".
Structure
There are three pericardial sinuses: superior, transverse and oblique.[1]
- The superior sinus is anterior to the ascending aorta and the pulmonary trunk.[1] It cannot be assessed in electrophysiology procedures.[1]
- The oblique sinus is an inverted J-shaped reflection of the venae cavae and pulmonary veins.[2] It lies behind the atria (particularly the left atrium),[1] and in between left and right pulmonary veins.
- The transverse sinus is the tunnel-shaped passage posterior to the aorta and pulmonary trunk, and anterior to the superior vena cava.[1][2] This sinus is clinically important because passing one end of clamp through the sinus, and the other end anterior to the aorta/pulmonary trunk will allow complete blockage of blood output. This is performed during some heart surgeries.Script error: No such module "Unsubst".
Clinical significance
During pericardial effusion, fluid may build up in the pericardial sinuses.[3] This may be diagnosed with transoesophageal echocardiography.[3]
References
Public domain This article incorporates text in the public domain from Template:Wikidatathe 20th edition of Gray's Anatomy (1918)
External links
- Anatomy photo:20:04-0101 at the SUNY Downstate Medical Center - "Heart: Transverse and Oblique Pericardial Sinuses"
- thoraxlesson4 at The Anatomy Lesson by Wesley Norman (Georgetown University) (pericardialsinuses)
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