Registered Congenital Cardiac Sonographer – RCCS Practice Test

Free RCCS Sample Practice Questions & Answers

Question 1. During an RCCS examination, a child with complex congenital heart disease has an unexplained decrease in ventricular function compared with the previous study. The sonographer also notices a new regional wall-motion abnormality. What should be prioritized?

Verify image quality and coronary/anatomical findings, document the change, and communicate the significant new abnormality appropriately
B. Assume the change is caused by normal growth
C. Ignore the regional abnormality because global ejection fraction is still measurable
D. Delete the previous study from consideration

Correct Answer: A. Verify image quality and coronary/anatomical findings, document the change, and communicate the significant new abnormality appropriately

Answer Explanation: Option A is correct because a new regional wall-motion abnormality in a congenital patient can represent clinically important myocardial ischemia, coronary pathology, surgical complications, abnormal loading, or other changes. The first step is to verify that the finding is real by optimizing imaging, reviewing multiple views, comparing with prior studies, and assessing relevant coronary and hemodynamic anatomy. A measurable global ejection fraction does not exclude important regional dysfunction. The sonographer should document the finding accurately and follow institutional procedures for communicating significant unexpected abnormalities. Normal growth should not be used to dismiss a meaningful change in ventricular function. Longitudinal comparison is especially valuable in congenital cardiac imaging.

Why the other options are incorrect:

Option B dismisses a potentially significant clinical change without evidence.

Option C overlooks the importance of regional myocardial dysfunction even when global function remains measurable.

Option D removes valuable longitudinal information needed to determine whether the abnormality is new.

Study Guide:
A new regional wall-motion abnormality requires verification, comparison, and appropriate communication.
In congenital patients, consider coronary anatomy, surgical history, loading conditions, and technical factors.

Question 2. A neonate with suspected congenital heart disease has transposition of the great arteries. The aorta arises from the right ventricle and the pulmonary artery arises from the left ventricle. Which additional finding is critical to determine whether adequate systemic oxygenation can occur before definitive repair?

An adequate site for mixing, such as an atrial-level communication or VSD
B. Isolated pulmonary valve thickening
C. Mild left atrial enlargement
D. Normal coronary sinus drainage only

Correct Answer: A. An adequate site for mixing, such as an atrial-level communication or VSD

Answer Explanation: Option A is correct because in complete transposition of the great arteries, the systemic and pulmonary circulations operate in parallel rather than in series. Survival depends on adequate mixing between the two circulations through an atrial septal communication, ventricular septal defect, patent ductus arteriosus, or another pathway. The sonographer should define the great-artery relationships, assess the atrial septum, VSD, PDA, ventricular function, coronary origins, and pulmonary and systemic outflow. An intact or highly restrictive atrial septum can produce severe neonatal hypoxemia. Pulmonary valve thickening, mild left atrial enlargement, and coronary sinus drainage do not determine whether sufficient mixing exists.

Why the other options are incorrect:

Option B does not provide communication between the parallel circulations.

Option C does not establish adequate systemic-pulmonary mixing.

Option D describes venous anatomy and does not determine oxygenated blood mixing.

Study Guide:
In TGA, identify where systemic and pulmonary blood can mix.
Always assess the atrial septum, VSD, PDA, and coronary anatomy.

Question 3. A child with repaired tetralogy of Fallot has severe pulmonary regurgitation and a QRS prolongation on the ECG. Echocardiography demonstrates significant RV dilation. Which additional finding should increase concern for adverse ventricular remodeling?

Progressive RV enlargement with declining systolic function
B. Stable RV size with normal function
C. Small left atrium without other abnormalities
D. Normal pulmonary valve flow with no regurgitation

Correct Answer: A. Progressive RV enlargement with declining systolic function

Answer Explanation: Option A is correct because chronic pulmonary regurgitation after tetralogy of Fallot repair can cause progressive RV volume overload, dilation, and eventually systolic dysfunction. Electrical abnormalities such as QRS prolongation may coexist with adverse RV remodeling and arrhythmia risk, although ECG findings should not be interpreted independently. Serial echocardiographic assessment of RV volumes, systolic function, pulmonary regurgitation severity, and associated lesions is important. A stable, normally functioning RV is less concerning, while absence of pulmonary regurgitation argues against this mechanism. Left atrial size does not directly assess the consequences of chronic pulmonary regurgitation.

Why the other options are incorrect:

Option B indicates stability rather than progressive adverse remodeling.

Option C does not assess the chamber primarily affected by pulmonary regurgitation.

Option D contradicts the described severe pulmonary regurgitation.

Study Guide:
After TOF repair, monitor serial RV size and function when pulmonary regurgitation is significant.
Progressive RV dilation with declining function is particularly concerning.

Question 4. A neonate has suspected congenital diaphragmatic hernia with associated cardiac compression. The heart appears displaced toward the opposite side of the chest. Which echocardiographic issue can make assessment more difficult?

Altered cardiac position and limited acoustic windows caused by thoracic anatomy
B. Increased visibility of all cardiac structures
C. Guaranteed normal pulmonary artery pressure
D. Elimination of Doppler angle limitations

Correct Answer: A. Altered cardiac position and limited acoustic windows caused by thoracic anatomy

Answer Explanation: Option A is correct because congenital diaphragmatic hernia can displace the heart and alter the normal relationship between cardiac structures and the thoracic wall. Herniated abdominal contents can also reduce available acoustic windows and make standard echocardiographic planes more difficult to obtain. The sonographer may need to modify probe position and scanning windows while maintaining careful assessment of chamber morphology, ventricular function, pulmonary pressures, pulmonary arteries, and associated congenital cardiac abnormalities. Altered anatomy does not guarantee normal pulmonary pressure; pulmonary hypertension can be clinically significant in these neonates. Doppler angle limitations remain important regardless of cardiac displacement.

Why the other options are incorrect:

Option B is incorrect because displaced anatomy often makes imaging more challenging.

Option C is incorrect because pulmonary hypertension may be a major associated problem.

Option D is incorrect because Doppler angle dependence remains fundamental.

Study Guide:
Thoracic abnormalities can change cardiac position and reduce standard acoustic windows.
Adapt scanning planes while maintaining systematic assessment of anatomy and pulmonary pressure.

Question 5. A child with congenital heart disease has a suspected unroofed coronary sinus. Color Doppler demonstrates flow between the coronary sinus region and the left atrium. Which associated finding should be evaluated?

Persistent left superior vena cava and the pattern of systemic venous drainage
B. Isolated pulmonary valve stenosis
C. Aortic coarctation only
D. Mitral valve prolapse only

Correct Answer: A. Persistent left superior vena cava and the pattern of systemic venous drainage

Answer Explanation: Option A is correct because an unroofed coronary sinus represents a communication between the coronary sinus and left atrium and can be associated with persistent left superior vena cava. The exact anatomy determines the direction and magnitude of shunting and may influence systemic venous return. The sonographer should evaluate the coronary sinus, left SVC, right SVC, systemic venous pathways, atrial septum, and pulmonary venous connections. Understanding the venous anatomy is essential because unusual coronary sinus enlargement can otherwise be mistaken for another cardiac structure. Pulmonary stenosis, aortic coarctation, and mitral valve prolapse do not specifically establish the systemic venous association.

Why the other options are incorrect:

Option B does not explain abnormal coronary sinus-to-left atrial flow.

Option C affects the aortic arch rather than the coronary sinus.

Option D does not define systemic venous drainage anatomy.

Study Guide:
When the coronary sinus is unusually large or communicates with the LA, assess for an unroofed coronary sinus and persistent left SVC.
Trace systemic venous pathways carefully.

Question 6. A neonate with suspected congenital heart disease has severe cyanosis. Echocardiography shows pulmonary atresia with VSD and a PDA supplying the pulmonary arteries. Doppler demonstrates asymmetric pulmonary artery flow. What should the sonographer investigate next?

Whether additional pulmonary segments are supplied by major aortopulmonary collateral arteries
B. Only left atrial size
C. Only mitral inflow
D. Only coronary sinus diameter

Correct Answer: A. Whether additional pulmonary segments are supplied by major aortopulmonary collateral arteries

Answer Explanation: Option A is correct because in pulmonary atresia with VSD, pulmonary blood flow may arise from multiple sources, including the PDA and major aortopulmonary collateral arteries. Asymmetric pulmonary artery flow may indicate that some pulmonary segments have different arterial supplies. The sonographer should document native pulmonary artery size and continuity, ductal flow, collateral origins when visible, and the distribution of pulmonary blood flow. This information is highly relevant to the overall anatomical and surgical assessment. Left atrial size and mitral inflow do not identify pulmonary segmental blood supply. Coronary sinus diameter is unrelated to pulmonary arterial perfusion.

Why the other options are incorrect:

Option B does not establish the source of pulmonary blood flow.

Option C evaluates left ventricular filling rather than pulmonary arterial supply.

Option D does not explain asymmetric pulmonary arterial perfusion.

Study Guide:
In PA/VSD, determine whether pulmonary blood flow comes from PDA, native PAs, MAPCAs, or a combination.
Segmental pulmonary blood supply can be complex and clinically important.