Time Velocity Integral (TVI or VTI)
Ans- represents the distance blood travels with each stroke
Regurgitant Volume (RV)
Ans- the volume of blood that regurgitates through an incompetent valve with
each heart beat
Regurgitant Fraction (RF)
Ans- the fraction or percentage of total stroke volum...
Adult Echo Exam 1 Questions and Answers Time Velocity Integral (TVI or VTI) Ans- represents the distance blood travels with each stroke Regurgitant Volume (RV) Ans- the volume of blood that regurgitates through an incompetent valve with each heart beat Regurgitant Fraction (RF) Ans- the fraction or percentage of total stroke volume that regurgitates through an incompetent valve Effective Regurgitant Orifice (ERO) Ans- the size of the orifice through which the regurg passes, refers to the average effective area of the regurg orifice Regurgitant Orifice Area (ROA) Ans- another term for effective regurgitant orifice Proximal Isovelocity Surface Area (PISA) Ans- based on the concept that the flow proximal to the regurgitant orifice is equal to the flow through the regurgitant orifice Regurgitant flow (Flow MR) Ans- the instantaneous flow rate in cc/sec Stroke Vol ume (SV) Ans- amount of blood pumped by the heart with each beat Cardiac Output (CO)
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