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Echocardiography
AS and equations
29
Medical
Graduate
02/11/2010

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Cards

Term
Shunt Ratio
Definition
Qp / Qs
Qp = RVOT CSA * VTI Qs = LVOT CSA * VTI
Term
RVSP
Definition
RVSP = PA pressure

4(TRjet)^2 + RAP (assume 10mmHg)
Term
RVSP w/ VSD
Definition
RVSP =Systolic BP - 4(Peak VSD Velocity)^2
Term
RVSP w/ PDA
Definition
RVSP =  Systolic BP – 4(Peak PDA Velocity)
Term
PAP
Definition
PAP = RVSP

4(Peak TRjet)^2 + RAP
Term
Mean PA Pressure
Definition
4(Early PI jet)^2
Term
PAEDP
Definition
4(End PI jet)^2 + RAP (assume 10mmHg)
Term
LVEDP
Definition
DBP – 4(End AI jet)^2
Term
LAP
Definition
SBP – 4(Peak MR jet)^2
Term
CAD
Definition
LAD = Anterior wall & Apex
RCA= Right Atrium Inferior wall
Circ = Lateral wall
Term
murmur that presents with AS?
Definition
Cresendo Decresendo
Term
During a physical exam, what are two indications a pt might have AS?
Definition
Low Systolic BP / Pulsus Parvus et Tardus
Term
Three causes / etiology of AS
Definition
Rheumatic Fever / Degeneration / Congenital
Term
most common congenital defect among adults below the age of 50?
Definition
Bicuspid AV
Term
echo’s equivalent to cath’s Peak-to-Peak
Definition
Mean Velocity
Term
formula the cath lab use to calculate the Peak-to-Peak Velocity
Definition
Gorlin formula
Term
Would a steep AV doppler slope indicate severe AS
Definition
No, doppler is on a time axis And the faster the blood passes through the valve the less stenosis
Term
If and AS pt has a low EF, would the gradient between V1 and V2 be large or small
Definition
small because there isn’t enough power to generate a powerful contraction
No matter the degree of stenosis
Term
When reading an EKG, how could you tell there is LA dilation
Definition
Bi-phasic P-Wave
Term
What is the average LVOT diameter
Definition
2cm
Term
What is a Raphe
Definition
Underdeveloped AV cusp
Term
What age does a bicuspid AV become symptomatic
Definition
20-50 y/o
Term
Degenerative or senile AS becomes symptomatic at what age?
Definition
65-70 y/o
Term
CW of the AV can sometimes be confused with what?
Definition
MR of the MV
Term
CSA
Definition
.785 x d^2
Term
What is the most important value of a pt w/ severe AS
Definition
AVA
Term
A pt w/ EF of 20% their peak gradient would be higher or lower than expected
Definition
Lower
Term
A pt w/ an of EF 20% would have a _______
AVA than someone with an EF of 60%
Definition
no different
Term
AS is a form what what on the LV
Definition
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