Questões ASE University - Guidelines Função Diastólica 2016 - Questão 3

3. When performing measurements for assessing diastolic function, which of the following technical acquisition methods should not be used?

a. To accurately measure mitral E and A waves, a low wall filter setting (100–200 MHz) and low signal gain should be used to optimize spectral waveforms without spikes or feathering.
b. To accurately analyze pulsed-wave tissue Doppler velocities of the mitral annulus, the ultrasound system presets for wall filter (low) and lowest signal gain should be used with the sample volume placed at the annulus.
c. To record changes in mitral E and A velocities with Valsalva maneuver, the spectral Doppler recording should be obtained continuously through peak inspiration and as patient performs forced expiration for 10 sec with mouth and nose closed, as well as during release.
d. To measure left atrial volume index, the method of disks or area-length method are used, making sure to include LA appendage or pulmonary veins in the LA.
e. To analyze pulmonary vein inflow velocities, the peak modal velocity at the leading edge of the spectral waveform should be measured.