# Shared Flashcard Set

## Details

Exam 2
Echo
18
Veterinary Medicine
Professional
02/08/2017

Term
 In regards to U/S probes, the (higher/lower) the frequency the higher the detail and the (higher/lower) the penetration.
Definition
 -high-lower
Term
 What do the colors mean on Doppler?
Definition
 -Blue Away-Red Toward -Green in turbulancd
Term
 How does a low Nyquist limit affect Doppler?
Definition
 -will look turbulent
Term
 What is continuous wave Doppler?
Definition
 -sends continuous Doppler signal: quantifies max velocity along one line
Term
 What do we use continuous wave Doppler to diagnose?
Definition
 -congenital lesions and to determine velocity of valve regurgitation
Term
 What does continuous wave Doppler allow us to measure mathematically?
Definition
 -pressure gradient b/n two chamgers -equition: V^2 X4
Term
 What is pulse wave dopler?
Definition
 -assess or pulse a single area and determinevelocity and time of waves in a defined area (equal symgbol)-used to assess diastolic function
Term
 What does M mode w/ pulse wave Doppler allow us to measure? What do we want it to be?
Definition
 -systolic function (fraction shortening)-want it to be at least 25%
Term
 What is the ejection fraction?
Definition
 -the amount of blood being pumped out: take volume of ventricle and compare in systole and diastole
Term
 What is the E wave? A wave?
Definition
 -E = early filling-A = atrial kick
Term
 What is the significance of altered pulmonary v flow?
Definition
 -means diastolic function of atrium is off
Term
 What is isovolumetric relaxation time (ICRT)?
Definition
 -time in which volume in heart should not change (diastolic function)
Term
 How do we measure the LA to see if it is enlarged?
Definition
 -compare to size of aorta -measure in side view
Term
 Which side of the heart should be smaller?
Definition
 -right side
Term
 How do we diagnose tumors in the heart?
Definition
 -mass on echo + location + signalment
Term
 How do we ID valve stenosis on echo?
Definition
 -see green turbulence
Term
 In the case of septal defects, which way does blood tend to flow?
Definition
 -left is higher P thus flows left to right
Term
 What is an echo report?
Definition
 -includes narrative of chamger size-LV systolic function estimates-note valve anatomy and any regurge or stenosis-estimate of diastolic function
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