The "rapid atrial swirl sign" for assessing central venous catheters: Performance by medical residents after limited training
Fig 2
Demonstration of the “rapid atrial swirl sign” (RASS).
(A) Anatomic structures from a subcostal view. LA, left atrium; LIV, liver; LV, left ventricle; RA, right atrium; RASS, rapid atrial swirl sign; RV, right ventricle. (B) Complete opacification of the right atrium after rapid injection of 10 mL of normal saline through the distal hub of the catheter.