Aortic Stenosis

Question 1

What does Aortic Valve Calcium Score indicate in patients with aortic stenosis?

Answer 1

Measures calcium deposits in the aortic valve

Higher scores indicate more severe aortic stenosis.

Question 2

What is the significance of Mean gradient & Vmax in aortic stenosis assessment?

Answer 2

Indicates severity of aortic stenosis

Vmax > 24 m/s and mean PG > 240 mmHg suggest severe AS.

Question 3

What does Aortic valve area (AVA) measure?

Answer 3

The size of the aortic valve opening

AVA < 1 cm² indicates severe aortic stenosis.

Question 4

What is the normal range for Stroke volume (SV) in aortic stenosis assessment?

Answer 4

SVi > 35 mL/m²

Indicates adequate heart function.

Question 5

What role does Dobutamine play in stress echocardiography?

Answer 5

Stimulates heart to assess function under stress

Used in patients unable to exercise.

Question 6

What does Stress Echo assess in patients with aortic stenosis?

Answer 6

Heart function under stress conditions

Helps evaluate severity and symptoms.

Question 7

What characterizes Non-severe AS?

Answer 7

Normal flow and low-gradient AS

Severe AS is less likely in these cases.

Question 8

What is the threshold for Aortic Valve Calcium Score (AVCS) in females indicating severe AS?

Answer 8

> 1200 AU

For males, the threshold is > 2000 AU.

Question 9

What does an LVEF of 250% indicate?

Answer 9

Left ventricular ejection fraction

A normal LVEF suggests preserved heart function.

Question 10

What is the definition of Pseudo-severe AS?

Answer 10

High flow state mimicking severe AS

Requires reassessment under normal flow conditions.

Question 11

What is the significance of DSE with flow reserved?

Answer 11

Assesses aortic valve area under stress

Helps differentiate between severe and pseudo-severe AS.

Question 12

What is the Integrated assessment in aortic stenosis?

Answer 12

Combines multiple measurements for diagnosis

Includes AVA, gradients, and flow patterns.

Question 13

What is the mean gradient threshold for recommending intervention in symptomatic patients with severe aortic stenosis?

Answer 13

240 mmHg

This threshold indicates a high-gradient aortic stenosis requiring intervention.

Question 14

What is the Vmax threshold for intervention in symptomatic patients with severe aortic stenosis?

Answer 14

24.0 m/s

This measurement is part of the criteria for severe aortic stenosis.

Question 15

What is the AVA threshold for intervention in symptomatic patients with severe aortic stenosis?

Answer 15

S1.0 cm² (or s0.6 cm/m² BSA)

This area measurement is critical for assessing aortic stenosis severity.

Question 16

Intervention is recommended in symptomatic patients with low-flow, low-gradient aortic stenosis when the LVEF is less than what percentage?

Answer 16

<50%

This recommendation applies after careful confirmation of severe aortic stenosis.

Question 17

Intervention should be considered in symptomatic patients with low-flow, low-gradient aortic stenosis with normal LVEF greater than what percentage?

Answer 17

250%

This consideration is made after confirming that aortic stenosis is severe.

Question 18

What is the SVi threshold for low-flow aortic stenosis in symptomatic patients requiring intervention?

Answer 18

s35 mL/m²

This volume index indicates low-flow conditions in aortic stenosis.

Question 19

What is the gradient threshold for low-gradient aortic stenosis in symptomatic patients requiring intervention?

Answer 19

<40 mmHg

This gradient indicates a low-gradient condition in aortic stenosis.

Question 20

What is recommended for asymptomatic patients with severe aortic stenosis (AS) and LVEF <50%?

Answer 20

Intervention is recommended

This recommendation applies when there is no other cause for the reduced LVEF.

Question 21

In asymptomatic patients with severe, high-gradient AS and LVEF 250%, what is considered if the procedural risk is low?

Answer 21

Intervention should be considered as an alternative to close active surveillance

This is applicable if the patient has a normal exercise test.

Question 22

What parameters indicate that intervention should be considered in asymptomatic patients with severe AS and LVEF 250%?

Answer 22

• Very severe AS (mean gradient >60 mmHg or Vmax >5.0 m/s)
• Severe valve calcification (assessed by CCT) and Vmax progression >0.3 m/s/year
• Markedly elevated BNP/NT-proBNP levels (more than three times age- and sex-corrected normal range)
• LVEF <55% without another cause

These parameters help assess the urgency of intervention.

Question 23

What should be considered in asymptomatic patients with severe AS who experience a sustained fall in BP during exercise testing?

Answer 23

Intervention should be considered

A sustained fall in BP (>20 mmHg) indicates potential complications.

Question 24

What class level is assigned to the recommendation for intervention in asymptomatic patients with severe AS and LVEF <50%?

Answer 24

Class Level I

This indicates a strong recommendation for intervention.

Question 25

What class level is assigned to the recommendation for intervention in asymptomatic patients with severe AS and LVEF 250%?

Answer 25

Class Level IIa ## Footnote This indicates that the intervention is reasonable under certain conditions.

Question 26

What class level is assigned to the recommendation for intervention in asymptomatic patients with severe AS and specific parameters?

Answer 26

Class Level IIb ## Footnote This indicates that the intervention may be considered based on clinical judgment.

Question 27

What class level is assigned to the recommendation for intervention in asymptomatic patients with a sustained fall in BP during exercise testing?

Answer 27

Class Level IIa ## Footnote This indicates that intervention is reasonable in this scenario.

Question 28

What is the **LVEF threshold** for patients with severe aortic stenosis without another cause?

Answer 28

<50% ## Footnote This threshold indicates significant left ventricular dysfunction in the context of aortic stenosis.

Question 29

Name one of the **criteria** for managing patients with severe aortic stenosis.

Answer 29

* High-gradient AS * Severe valve calcification and Vmax progression > 203 m/s/year * Elevated BNP or NT-proBNP levels attributable to AS * LVEF < 55% attributable to AS * Symptoms * Exercise test with sustained fall in BP > 20 mmHg ## Footnote These criteria help determine the severity and urgency of intervention for aortic stenosis.

Question 30

What does **close active surveillance** indicate in the management of severe aortic stenosis?

Answer 30

Monitoring the patient's condition closely for any changes ## Footnote This approach is often used when the procedural risk is low and intervention is not immediately necessary.

Question 31

What is the **intervention class** for patients with severe aortic stenosis and low procedural risk?

Answer 31

Class IIa ## Footnote This classification suggests that intervention is reasonable under certain circumstances.

Question 32

What is required for a **Heart Team evaluation** in managing severe aortic stenosis?

Answer 32

Class I ## Footnote A Class I recommendation indicates that the procedure is indicated and should be performed.

Question 33

What is the **mode of intervention** in patients with severe aortic stenosis?

Answer 33

SAVR or TAVI ## Footnote SAVR stands for Surgical Aortic Valve Replacement, and TAVI stands for Transcatheter Aortic Valve Implantation.

Question 34

What is the **age** range mentioned for patients with severe aortic stenosis?

Answer 34

* 60 years * 70 years ## Footnote These ages are relevant for assessing intervention options.

Question 35

What are the **limitations** associated with aortic stenosis interventions?

Answer 35

* Estimated life expectancy * Technical complexity * Limited durability ## Footnote These factors influence the choice of intervention.

Question 36

What type of valve is associated with a higher **embolic/haemorrhagic risk**?

Answer 36

Mechanical valve ## Footnote Mechanical valves require anticoagulation therapy (OAC) due to the risk of embolism and hemorrhage.

Question 37

What is the **Ross procedure** in the context of aortic stenosis?

Answer 37

A surgical technique involving the replacement of the aortic valve with the patient's own pulmonary valve ## Footnote This procedure is considered in specific patient populations.

Question 38

What does **OESC** stand for in the context of aortic stenosis?

Answer 38

Not explicitly defined in the text ## Footnote OESC may refer to a specific clinical guideline or organization related to aortic stenosis.

Question 39

What does **EACTS** stand for?

Answer 39

Not explicitly defined in the text ## Footnote EACTS may refer to the European Association for Cardio-Thoracic Surgery.

Question 40

What is the recommended intervention for patients with **severe aortic stenosis** irrespective of surgical risk score?

Answer 40

TAVI ## Footnote TAVI is recommended in patients 70 years of age with tricuspid AV stenosis, if the anatomy is suitable.

Question 41

In patients **<70 years of age** with low surgical risk, what intervention is recommended?

Answer 41

SAVR (Class I) ## Footnote SAVR is recommended for patients under 70 years of age if the surgical risk is low.

Question 42

What is the recommendation for **all remaining candidates** for an aortic bioprosthesis according to Heart Team assessment?

Answer 42

SAVR or TAVI (Class I) ## Footnote Both SAVR and TAVI are recommended for candidates based on Heart Team evaluation.

Question 43

What is the recommendation for patients **≥70 years** with a tricuspid aortic valve if anatomy is suitable?

Answer 43

TAVI (Class I) ## Footnote TAVI is recommended for patients 70 years and older with suitable anatomy.

Question 44

What is the **OESC Level** for TAVI?

Answer 44

A ## Footnote This indicates a strong recommendation for TAVI in suitable patients.

Question 45

What is the **EACTS** classification for the recommendations mentioned?

Answer 45

Revised ## Footnote The recommendations have been revised for clarity and updated practices.

Question 46

What factors **favour SAVR**?

Answer 46

* Hostile annulus or LVOT calcification * Bicuspid aortic valve * Annulus dimensions unsuitable for TAVI * Risk of coronary obstruction * Age < 70 years * Other relevant primary VHD * Complex CAD * Aortic root or ascending aortic aneurysm * Septal hypertrophy requiring myectomy * Redo SAVR: risk of redo surgery ## Footnote These factors indicate a preference for surgical aortic valve replacement (SAVR) over transcatheter aortic valve implantation (TAVI).

Question 47

What factors **favour TAVI**?

Answer 47

* Transfemoral access suitable for TAVI * Porcelain aorta * Intact coronary artery bypass grafts * Severe chest deformity or scoliosis * Comorbidities or cardiac conditions increasing surgical risk * Frailty * Sequelae of chest radiation ## Footnote These factors suggest a preference for transcatheter aortic valve implantation (TAVI) over surgical options.

Question 48

What is a key consideration in **lifetime management** after valve intervention?

Answer 48

Anticipate repeat procedure options and risks ## Footnote This is important when selecting modality and valve type at the index procedure.

Question 49

True or false: **SAVR after TAVI** has an increased risk associated with THV explantation.

Answer 49

TRUE ## Footnote This highlights the complexities and risks involved in managing patients who have undergone TAVI.

Question 50

What is a potential complication of **valve-in-valve TAV**?

Answer 50

Increased risk of coronary access, prosthesis-patient mismatch ## Footnote These complications can arise during the management of patients requiring valve-in-valve procedures.

Question 51

What is the condition referred to as **aortic stenosis**?

Answer 51

A narrowing of the aortic valve opening ## Footnote This condition can lead to reduced blood flow from the heart to the rest of the body.

Question 52

What is crucial for the **indication and selection of modality** in aortic stenosis treatment?

Answer 52

Heart Team assessment incorporating lifetime-management considerations ## Footnote A multidisciplinary approach is essential for optimal patient outcomes.

Question 53

What does **OESC** stand for in the context of aortic stenosis?

Answer 53

Not specified ## Footnote OESC is likely an acronym related to guidelines or standards in cardiac care.

Question 54

What does **EACTS** represent in relation to aortic stenosis?

Answer 54

Not specified ## Footnote EACTS is likely an acronym for a European association focused on cardiac surgery.

Question 55

When is **earlier intervention** recommended for selected asymptomatic severe high-gradient AS?

Answer 55

In selected cases ## Footnote This approach may improve outcomes in specific patient populations.

Question 56

What is the recommendation for **TAVI** in 70-year-olds?

Answer 56

In 70-year-olds if tricuspid valve and anatomy favorable ## Footnote TAVI stands for Transcatheter Aortic Valve Implantation.

Question 57

What is the recommendation for **SAVR** in patients under 70 years old?

Answer 57

In <70 year-olds if low-surgical risk ## Footnote SAVR stands for Surgical Aortic Valve Replacement.