ECH 100 Week 7 Diastolic Dysfunction Quiz

Why does ischemia cause diastolic dysfunction?

• by reducing myocardial contractility

• by impairing myocardial relaxation

• by increasing heart rate

• by causing ventricular hypertrophy

What does this waveform represent?

• mitral valve inflow

• pulmonary vein flow

• tricuspid valve regurgitation

• tissue Doppler at the MV annulus

What is the purpose of Valsalva maneuver with the mitral E/A flow?

• measure systolic function

• determine if there is grade II diastolic dysfunction

• evaluate MR

• decrease LA pressure

Atrial volume is at its _____ during ventricular systole?

• lowest
• highest

A decreased E wave velocity during abnormal relaxation is due to ______.

• smaller pressure difference between the LA and LV when the MV opens

• larger pressure difference between the LA and LV when the MV opens

What is assessed to grade diastolic dysfunction?

• stroke volume, cardiac output, ejection fraction

• E/A, tissue Doppler of mitral annulus

• mitral regurgitation, aortic stenosis

• LVOT VTI, Mitral annular calcification, LV Simpsons

What is the normal pressure in the LV during end diastole?

• 5-8 mmHg

• 34 mL/m²

• 55-75%

• 2 m/s

What is the purpose of the Bernoulli equation?

• assess systolic function

• estimate LAP

• calculate 2D measurements for Left ventricular quantification

• assess pressure gradients from one chamber to another

What is the cut off for tricuspid regurgitation velocity for diastolic dysfunction?

• 10 ml/m²

• 20 msec

• 2.8 m/s

• >15

What is the purpose of using tissue Doppler on the annulus of the mitral valve when assessing LV diastolic function?

• reflects the longitudinal lengthening of the LV in early diastole

• measures atrioventricular pressure gradients over time

• it is directly related to LV relaxation and is inversely related to LAP