Severity of TR in this patient
by Sepehr Richard W

Interesting Cases in Echocardiography

by Navin C Nanda
About Video

The turbulent TR jet is eccentric, loses its high velocity when it strikes the lateral wall of the RA (Coanda effect) and takes on red color as it swirls around the RA. Red color occurs because the velocity of the TR jet has now decreased below the Nyquist limit of 54.2 cm/s. Therefore, it is important to take into account both the turbulent and the nonturbulent color flow signals moving in the same phase in systole when assessing regurgitation severity, fully realizing that a part of those low-velocity signals will be due to SVC and IVC inflow and entrainment. In this patient, the combined turbulent and non-turbulent laminar red flow signals occupy a large portion (>33%) of the RA indicative of severe TR.

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