Thursday, August 30, 2018

“rapid atrial swirl sign“ (RASS)

Q: What is  “rapid atrial swirl sign“ (RASS)?

Answer: RASS is a quick bedside echocardiographic sign, which can be obtained using the same ultrasound machine used to place a central venous catheter (CVC) to determine the correct positioning of the CVC tip. It is obtained by injecting 10 mL of normal saline via the distal port of CVC and observing a bright flush (or rapid opacification) of/within the right atrium. Subclavian CVCs tend to travel upward in the retrograde direction, and this can provide a quick bedside confirmation.

#procedures



Reference: 

Korsten P, Mavropoulou E, Wienbeck S, et al. The “rapid atrial swirl sign” for assessing central venous catheters: Performance by medical residents after limited training. Rothenbühler M, ed. PLoS ONE. 2018;13(7):e0199345.

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