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Zoom on the aortic valve and LVOT.
Measurement of the LVOT diameter at 0.54 cm.
Here the LVOT is 0.61 cm
VTI at LVOT level (2 lines of the PW-Doppler Cursor at level just below the valve) is at 0.078 meter in a patient with decreased LV output and LV systolic function.
Ideally you would want the best and least angulation with the LVOT to obtain your PW-Doppler with here a VTI estimated at 0.150 meter.
Here, the angle is NOT optimal - we have a VTI estimated at 0.125 meter and is likely underestimated because there is a large angle between the actually LVOT and Ascending Aorta, and the line of interrogation/cursor at the LVOT level.
Very low RVO: 88 mL/kg/min. This patient had severe RV failure with a small left to right duct that was contributing to pulmonary vascular flow in the context of significantly low right ventricular output.
Extremely depressed VTI at 0.064 m, due to RV systolic dysfunction.
Heart rate for the measured cardiac cycle is 89 bpm (this cycle is 674 msec in duration, which means that in 1 minute we have 89 cardiac cycle; 60000/674=89).
0.77 cm (RVOT)
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