echo exam four

what are the advantages of 2d echo for CAD evaluation?

• can be done immediately

• can determine location and extent of lv wall motion abnormalities

• estimate systolic and diastolic func

• identifying complications

• serial follow ups

what is acute myocardial ischemia?

lack of oxygenated blood to myocardium

when narrowing from acute myocardial ischemia exceeds 70% of CSA blood flow, it can’t keep up with:

• exercise

• pharmacological intervention

• mental stress

t/f : @ rest, obstructed coronaries can still compensate for blood supply demands (acute myocardial ischemia)

True

what are the consequences of acute myocardial ischemia?

• CA occlusion/obstruction

• diastolic dysfunction

• impaired relaxation and decreased compliance

• increased LVEDP

• decreased LV EF (most obvious sign)

• LV dilation (after long time)

• large infarctions

how do we describe wall abnormalities?

• hypokinesis : increase in systolic wall thickening <40%

• akinesis : systolic wall thickening <10%

• dyskinesis : when wall moves outward during systole and has wall thinning