ARDMS Adult Echocardiography (AE) Specialty Exam — Questions and Answers

Question 1: In a standard echocardiogram report, what does 'diastolic dysfunction, Grade II (pseudonormal)' mean?

Severely restrictive filling with very high filling pressures
Impaired relaxation with elevated filling pressures (LA pressure elevated, E/A appears normal 0.8–2.0) (Correct answer)
Normal myocardial relaxation with low filling pressures
Normal relaxation with borderline LA pressure

Correct answer: Impaired relaxation with elevated filling pressures (LA pressure elevated, E/A appears normal 0.8–2.0)

Grade II (pseudonormal) diastolic dysfunction mimics normal mitral inflow (E/A 0.8–2.0) but has elevated filling pressures, unmasked by tissue Doppler and pulmonary vein analysis.

Question 2: In Doppler echocardiography, what is spectral broadening?

A sign of normal laminar flow
Narrowing of the spectral envelope in turbulent flow
Widening of the spectral envelope due to a range of velocities in the sample volume (Correct answer)
An artifact from incorrect gain settings

Correct answer: Widening of the spectral envelope due to a range of velocities in the sample volume

Spectral broadening occurs when a wide range of velocities exists within the sample volume, filling in the normally clear spectral window.

Question 3: What is the Nyquist limit in pulsed wave Doppler echocardiography?

Twice the pulse repetition frequency
Half the pulse repetition frequency (Correct answer)
The pulse repetition frequency
The transducer frequency

Correct answer: Half the pulse repetition frequency

The Nyquist limit equals half the pulse repetition frequency (PRF); exceeding it causes aliasing in pulsed wave Doppler.

Question 4: What is the first step a sonographer should take when preparing a patient for an echocardiogram?

Apply the ultrasound gel
Start the ultrasound machine
Position the patient on the examination table
Explain the procedure to the patient and obtain consent (Correct answer)

Correct answer: Explain the procedure to the patient and obtain consent

Before any medical procedure, including an echocardiogram, the sonographer's first and most crucial step is to explain the procedure thoroughly to the patient. This includes describing what will happen, why it's being done, and addressing any patient concerns. Obtaining informed consent ensures the patient understands and agrees to the examination, upholding ethical standards and promoting patient cooperation.

Question 5: In a patient with low-flow, low-gradient aortic stenosis (LVEF < 50%), dobutamine stress echo is used to:

Distinguish true severe AS (fixed, small AVA) from pseudo-severe AS (AVA normalizes with increased flow) (Correct answer)
Measure pulmonary artery pressure at rest
Evaluate diastolic dysfunction severity
Assess coronary artery disease by wall motion abnormalities only

Correct answer: Distinguish true severe AS (fixed, small AVA) from pseudo-severe AS (AVA normalizes with increased flow)

Low-dose dobutamine stress echo increases flow; true severe AS maintains a small AVA (<1.0 cm²) despite increased gradient, while pseudo-severe AS shows AVA increasing above 1.0 cm².

Question 6: What does a shortened mitral deceleration time (<150 ms) suggest in a patient with LV dysfunction?

Normal diastolic function
Hyperdynamic function
Elevated LV filling pressures with restrictive physiology (Correct answer)
Impaired LV relaxation with low filling pressures

Correct answer: Elevated LV filling pressures with restrictive physiology

A short mitral E deceleration time (<150 ms) indicates rapid equalization of LA–LV pressures, consistent with elevated LV filling pressures.

Question 7: Which echocardiographic feature is most commonly associated with mitral regurgitation?

Thickened mitral valve leaflets
Diastolic flow turbulence in the aorta
Reduced motion of the aortic valve
Flow reversal in the pulmonary veins (Correct answer)

Correct answer: Flow reversal in the pulmonary veins

Mitral regurgitation often causes retrograde blood flow into the left atrium during systole, which can lead to flow reversal in the pulmonary veins, visible on echocardiography.

Question 8: Which heart valve is located between the left atrium and left ventricle?

Pulmonary valve
Mitral valve (Correct answer)
Tricuspid valve
Aortic valve

Correct answer: Mitral valve

The mitral valve, also known as the bicuspid valve, is strategically located between the left atrium and the left ventricle of the heart. Its primary function is to regulate blood flow, ensuring that oxygenated blood moves from the left atrium into the left ventricle and prevents backflow during ventricular contraction.

Question 9: What is the normal range for left ventricular end-diastolic diameter (LVEDD) in adults?

3.0–4.0 cm
6.0–7.0 cm
4.2–5.9 cm (Correct answer)
2.0–3.5 cm

Correct answer: 4.2–5.9 cm

The normal LVEDD in adults is approximately 4.2–5.9 cm as measured by 2D-guided M-mode echocardiography.

Question 10: A bicuspid aortic valve (BAV) is associated with which aortic complication requiring surveillance?

Left ventricular non-compaction
Mitral valve prolapse
Pulmonary hypertension
Ascending aortic dilation and risk of dissection (Correct answer)

Correct answer: Ascending aortic dilation and risk of dissection

BAV is associated with aortopathy — medial degeneration predisposing to ascending aortic dilation, aneurysm, and dissection independent of valve function.

Question 11: The myocardial performance index (Tei index) is calculated as:

(IVCT + IVRT) / ET (Correct answer)
ET × heart rate
ET / (IVCT + IVRT)
IVCT / ET

Correct answer: (IVCT + IVRT) / ET

The Tei index = (isovolumic contraction time + isovolumic relaxation time) / ejection time, assessing combined systolic and diastolic function.

Question 12: Which parameter best differentiates severe mitral regurgitation from moderate on echocardiography using the PISA method?

EROA ≥ 0.40 cm² and regurgitant volume ≥ 60 mL (Correct answer)
EROA ≥ 0.10 cm² and regurgitant volume ≥ 15 mL
Vena contracta ≥ 0.3 cm only
EROA ≥ 0.20 cm² and regurgitant volume ≥ 30 mL

Correct answer: EROA ≥ 0.40 cm² and regurgitant volume ≥ 60 mL

Severe primary MR criteria include EROA ≥0.40 cm² and regurgitant volume ≥60 mL per ASE/AHA/ACC guidelines.

Question 13: The PISA (proximal isovelocity surface area) method is used to quantify:

LV systolic function
Cardiac output
Severity of valvular regurgitation or stenosis (Correct answer)
Pericardial effusion size

Correct answer: Severity of valvular regurgitation or stenosis

The PISA method uses flow convergence proximal to a regurgitant orifice to calculate the effective regurgitant orifice area (EROA) and regurgitant volume.

Question 14: Tissue Doppler e' velocity at the septal annulus is normally:

>8 cm/s (Correct answer)
>12 cm/s
>15 cm/s
>20 cm/s

Correct answer: >8 cm/s

Normal septal e' velocity is ≥7–8 cm/s; a value <7 cm/s suggests impaired myocardial relaxation.

Question 15: What effect does increasing the angle of insonation (θ) beyond 20° have on Doppler velocity measurements?

Improves spatial resolution
Overestimates true velocity
No effect on velocity
Underestimates true velocity (Correct answer)

Correct answer: Underestimates true velocity

The Doppler equation uses cosine θ; as θ increases beyond 20°, cosine decreases, causing underestimation of true blood flow velocity.

Question 16: Effusive-constrictive pericarditis is diagnosed when:

Constrictive physiology persists on hemodynamic assessment after pericardiocentesis (Correct answer)
Hemodynamics normalize completely after pericardiocentesis
IVC collapsibility normalizes after pericardiocentesis
Left ventricular collapse is present with large effusion

Correct answer: Constrictive physiology persists on hemodynamic assessment after pericardiocentesis

Effusive-constrictive pericarditis is characterized by the coexistence of pericardial effusion and visceral pericardial constriction, confirmed when elevated right atrial pressure and constrictive Doppler patterns persist even after the effusion is drained.

Question 17: What cardiac index is calculated by dividing cardiac output by body surface area?

Pulmonary vascular resistance
Systemic vascular resistance
Stroke volume index
Cardiac index (Correct answer)

Correct answer: Cardiac index

Cardiac index (CI) = cardiac output / BSA, with a normal range of 2.2–4.0 L/min/m².

Question 18: In cardiac tamponade, what degree of respiratory variation in mitral inflow peak E-wave velocity is considered hemodynamically significant?

> 25% decrease with inspiration (Correct answer)
> 50% decrease with inspiration
> 10% decrease with inspiration
> 40% decrease with inspiration

Correct answer: > 25% decrease with inspiration

A respiratory variation in mitral E-wave velocity exceeding 25% is the Doppler equivalent of clinical pulsus paradoxus and indicates significant tamponade physiology.

Question 19: What should be done if a patient experiences shortness of breath during an echocardiogram?

Continue the procedure but monitor the patient closely
Pause the exam and provide oxygen if necessary (Correct answer)
Finish the exam as quickly as possible
Ask the patient to breathe more deeply

Correct answer: Pause the exam and provide oxygen if necessary

If a patient experiences shortness of breath during an echocardiogram, the sonographer's immediate priority is patient safety. The exam should be paused immediately to assess the patient's condition and provide appropriate intervention, such as administering oxygen if indicated. Continuing the exam without addressing the patient's distress could worsen their condition and is medically irresponsible.

Question 20: What is the normal range for left atrial volume index (LAVI)?

<34 mL/m² (Correct answer)
<16 mL/m²
<60 mL/m²
<50 mL/m²

Correct answer: <34 mL/m²

A normal LAVI is <34 mL/m²; mild dilation is 34–41 mL/m², moderate 42–48 mL/m², and severe ≥49 mL/m².

Question 21: How should a sonographer position a patient to reduce discomfort during a prolonged echocardiogram?

Seated upright
Prone with arms extended above the head
Left lateral decubitus position with proper support for the arm and shoulder (Correct answer)
Supine with arms at the sides

Correct answer: Left lateral decubitus position with proper support for the arm and shoulder

To reduce patient discomfort during a prolonged echocardiogram, the left lateral decubitus position is generally preferred. This position brings the heart closer to the chest wall, improving image quality, and is often more comfortable than lying flat on the back. Providing proper support for the patient's arm and shoulder further enhances comfort and stability, allowing for better cooperation and a more successful examination.

Question 22: What is the Doppler half-time for severe aortic regurgitation (PHT < X ms)?

< 200 ms (Correct answer)
400–600 ms
200–400 ms
> 500 ms

Correct answer: < 200 ms

A pressure half-time <200 ms in aortic regurgitation indicates severe AR because rapid equilibration of aortic and LV pressures occurs.

Question 23: Which echocardiographic sign in aortic regurgitation indicates severe volume overload and correlates with poor prognosis without surgery?

LV end-systolic dimension > 5.0 cm (Correct answer)
Normal LV dimensions
LV end-diastolic dimension > 6.0 cm only
LA dilation only

Correct answer: LV end-systolic dimension > 5.0 cm

An LV end-systolic dimension >5.0 cm in chronic severe AR is a guideline indication for aortic valve replacement even in asymptomatic patients.

Question 24: Using the continuity equation, aortic valve area (AVA) is calculated as:

AV VTI / LVOT VTI × heart rate
LVOT diameter² × 0.785
LVOT area × LVOT VTI / AV VTI (Correct answer)
Peak AV velocity / LVOT velocity

Correct answer: LVOT area × LVOT VTI / AV VTI

The continuity equation states AVA = (LVOT cross-sectional area × LVOT VTI) / AV VTI.

Question 25: What echocardiographic feature distinguishes organic (primary) from functional (secondary) mitral regurgitation?

Structural leaflet abnormality (prolapse, flail, restricted) in primary; normal leaflets with tethering in secondary (Correct answer)
Severity of MR only
Presence of LA dilation only
LV systolic function only

Correct answer: Structural leaflet abnormality (prolapse, flail, restricted) in primary; normal leaflets with tethering in secondary

Primary MR involves intrinsic leaflet pathology; secondary (functional) MR occurs in the setting of LV dilation/dysfunction with normal leaflets that fail to coapt due to tethering.

Question 26: Which echocardiographic parameter non-invasively estimates pulmonary capillary wedge pressure (PCWP)?

RVOT acceleration time
Mitral A wave velocity
Tricuspid annular velocity
E/e' ratio (mitral E / tissue Doppler e') (Correct answer)

Correct answer: E/e' ratio (mitral E / tissue Doppler e')

E/e' >14 (average of septal and lateral) correlates with elevated PCWP and is an ASE/EACVI recommended parameter for LV filling pressure estimation.

Question 27: In transesophageal echocardiography (TEE), which probe position best evaluates the left atrial appendage (LAA) for thrombus?

Deep transgastric view
High esophageal position at 0°
Transgastric short-axis at 0°
Mid-esophageal position at 0° and 90° multiplane angles (Correct answer)

Correct answer: Mid-esophageal position at 0° and 90° multiplane angles

The mid-esophageal position with multiplane imaging at 0° and 90° (or using biplane mode) provides the best visualization of the LAA for thrombus detection before cardioversion.

Question 28: The deceleration time (DT) of the mitral E wave is prolonged in which pattern of diastolic dysfunction?

Restrictive filling (Grade III)
Pseudonormal filling (Grade II)
Impaired relaxation (Grade I) (Correct answer)
Normal filling

Correct answer: Impaired relaxation (Grade I)

Impaired relaxation (Grade I diastolic dysfunction) is characterized by a prolonged mitral E-wave deceleration time (>240 ms).

Question 29: Which inferior vena cava finding on echocardiography is most consistent with cardiac tamponade?

Normal IVC with exaggerated inspiratory collapse
IVC diameter < 1.5 cm with normal inspiratory collapse
Dilated IVC with < 50% inspiratory collapse (Correct answer)
IVC cannot be assessed in tamponade

Correct answer: Dilated IVC with < 50% inspiratory collapse

Cardiac tamponade elevates right atrial pressure, resulting in a plethoric (dilated) IVC that fails to collapse normally with inspiration.

Question 30: In M-mode echocardiography, the E-point septal separation (EPSS) reflects:

Right ventricular pressure overload
Diastolic dysfunction severity
Mitral valve stenosis
Left ventricular systolic dysfunction (Correct answer)

Correct answer: Left ventricular systolic dysfunction

An EPSS >7 mm indicates reduced LV systolic function, as the dilated LV prevents the mitral valve from approaching the septum.

ARDMS Adult Echocardiography (AE) Specialty Exam

The ARDMS Adult Echocardiography (AE) specialty exam certifies sonographers who perform adult cardiac ultrasound, assessing competency in cardiac anatomy, pathology, hemodynamics, measurement techniques, and instrumentation for echocardiography practice.

Questions

35 min

Time Limit

70%

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