When does simplified Bernoulli equation not apply in aortic valve assessment?
Ans- When proximal velocity is > 1.5 m/sec
Doppler frequency shift equation
Ans- Doppler shift = (2 x velocity of sample relative to source x transducer
frequency x cos[θ]) / speed of sound in the tissue
Will lo...
3. Symptoms, blood pressure fall, or significant arrhythmia.
,4. Positive result obtained, which is defined as:
A. An increase in AVA to a final area >1 cm2
B. AS jet velocity ≥4 m/sec or mean gradient >30-40 mm Hg
C. Absence of contractile reserve (failure to increase the stroke volume by
>20%).
What is duty factor? And how does changing depth affect this?
Ans- The percentage of time that the ultrasound system is transmitting sound
(pulses). More depth decreases duty factor
ACC Stages of MR
Ans- A: at risk, no hemodynamic consequences
B: progressive, not severe, some hemodynamic consequences
C1: severe, asymptomatic, LVESD < 40 mm, LVEF > 60
C2: severe, asymptomatic, LVESD > 40 mm or LVEF < 60
D: symptomatic severe
, Wilkins Score
Ans-
PHT and DT relationship
Ans- PHT = 0.29 x DT
MVA and PHT
Ans- 220/PHT
MVA and DT
Ans- 759/DT
MR Carpentier Class
Ans- Type 1: normal leaflet position and movement
Type 2: excess movement
Type 3a: Restrictive motion in systole and diastole (rheumatic, MAC, drug
induced)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MASTER01. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
