Echocardiography Techniques and Applications Flashcards
6 cards from real CCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Echocardiography Techniques and Applications flashcards as text
Which color Doppler finding suggests severe mitral regurgitation?
Answer: Eccentric wall-hugging jet with vena contracta >7 mm
Severe MR is suggested by an eccentric, wall-hugging Coanda jet and vena contracta width >7 mm, as central jet area alone underestimates severity of eccentric jets.
What does the tissue Doppler imaging (TDI) parameter e' (e-prime) measure?
Answer: Early diastolic myocardial relaxation velocity at the mitral annulus
TDI e' measures early diastolic myocardial velocity at the mitral annulus (septal or lateral), reflecting myocardial relaxation and used to estimate LV filling pressures via E/e' ratio.
In 3D echocardiography, what is the primary advantage over 2D echo for left ventricular volume assessment?
Answer: It eliminates geometric assumptions and foreshortening of the LV apex
3D echocardiography acquires the full LV volume without relying on geometric models, eliminating foreshortening and providing more accurate and reproducible volume measurements.
Which echocardiographic technique measures myocardial deformation to detect subtle dysfunction before overt wall motion abnormalities?
Answer: Speckle tracking strain imaging
Speckle tracking strain imaging tracks acoustic speckles frame-to-frame to quantify myocardial deformation (strain), detecting subclinical dysfunction earlier than visual wall motion assessment.
What finding on echo Doppler is used to non-invasively estimate right ventricular systolic pressure (RVSP)?
Answer: Peak tricuspid regurgitation jet velocity using the modified Bernoulli equation
RVSP is estimated by applying the modified Bernoulli equation (4v²) to the peak TR jet velocity and adding estimated right atrial pressure.
Which echocardiographic finding is most consistent with constrictive pericarditis rather than restrictive cardiomyopathy?
Answer: Septal bounce with respiratory variation in mitral inflow >25% and tissue Doppler e' >9 cm/s
Constrictive pericarditis shows a septal bounce, >25% respiratory variation in mitral inflow, and preserved or elevated e' (annulus paradoxus) due to the rigid pericardium enhancing ventricular coupling.