200+ Free RDCS Pediatric Practice Questions

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Question 1

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Which cardiac chamber forms the cardiac apex in a normal heart?

Right atrium

Left atrium

Right ventricle

Left ventricle

to track

2026 Statistics

Key Facts: RDCS Pediatric Exam

145

Exam Questions

Multiple-choice

555

Passing Score (scaled)

ARDMS (300-700 scale)

3 hrs

Exam Duration

ARDMS

$275

Specialty Exam Fee

ARDMS

29%

Performing Exam Domain

Largest domain

10 years

Certification Validity

CME required

The RDCS Pediatric exam has 145 multiple-choice questions in 3 hours with a passing scaled score of 555 (~70%). Five domains: Performing the Exam (29%), Congenital Anomalies (25%), Postoperative Evaluation (19%), Normal Anatomy (15%), and Acquired Heart Disease (12%). Requires SPI exam + eligible pathway. $275 specialty exam fee. 10-year certification with CME.

Sample RDCS Pediatric Practice Questions

Try these sample questions to test your RDCS Pediatric exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 200+ question experience with AI tutoring.

1Which cardiac chamber forms the cardiac apex in a normal heart?

A.Right atrium

B.Left atrium

C.Right ventricle

D.Left ventricle

Explanation: The left ventricle forms the cardiac apex in a normal heart. This is the most inferior and leftward portion of the heart, best visualized in the apical four-chamber view. The left ventricle has thicker walls than the right ventricle due to the higher afterload required to pump blood to the systemic circulation.

2In normal fetal circulation, which structure allows blood to bypass the pulmonary circulation?

A.Ductus venosus

B.Foramen ovale and ductus arteriosus

C.Umbilical vein

D.Coronary sinus

Explanation: The foramen ovale allows blood to flow from the right atrium to the left atrium, bypassing the pulmonary circulation, while the ductus arteriosus allows blood to flow from the pulmonary artery to the aorta. These shunts are essential because the fetal lungs are collapsed and receive minimal blood flow.

3Which statement correctly describes the normal position of the aortic valve relative to the pulmonary valve?

A.The aortic valve is anterior and to the right of the pulmonary valve

B.The aortic valve is posterior and to the right of the pulmonary valve

C.The aortic valve is anterior and to the left of the pulmonary valve

D.The aortic valve is posterior and to the left of the pulmonary valve

Explanation: In a normal heart, the aortic valve is located posterior and to the right of the pulmonary valve. This relationship can be remembered using the acronym "SOLV" (semilunar valves), where the pulmonic valve sits more Superior and Leftward, while the aortic valve is more inferior and rightward.

4Which vessel drains directly into the right atrium in normal anatomy?

A.Pulmonary veins

B.Coronary sinus

C.Superior vena cava only

D.Inferior vena cava only

Explanation: The coronary sinus drains directly into the right atrium at the ostium of the coronary sinus, located between the inferior vena cava and the tricuspid valve. The pulmonary veins drain into the left atrium, while the SVC and IVC also drain into the right atrium but are not the best single answer.

5What is the normal origin of the left coronary artery?

A.Right sinus of Valsalva

B.Left sinus of Valsalva

C.Non-coronary sinus

D.Ascending aorta above sinuses

Explanation: The left coronary artery normally arises from the left sinus of Valsalva (also called the left coronary sinus). The right coronary artery arises from the right sinus of Valsalva. The non-coronary sinus typically does not give rise to any coronary arteries in normal anatomy.

6During the first week of life, what is the expected pressure in the pulmonary artery?

A.Equal to aortic pressure

B.Lower than left ventricular pressure

C.Systemic or near-systemic pressure

D.One-fourth of aortic pressure

Explanation: During the first week of life, the pulmonary artery pressure is typically systemic or near-systemic due to the elevated pulmonary vascular resistance present in the neonatal period. As pulmonary vascular resistance falls over the first weeks to months of life, pulmonary artery pressure decreases to approximately one-fourth to one-fifth of systemic pressure.

7Which finding on echocardiography suggests normal visceral situs solitus?

A.Inferior vena cava to the left of the spine

B.Liver on the left side

C.Aortic arch to the right of the trachea

D.Stomach bubble on the left side with IVC to the right of the spine

Explanation: Normal visceral situs solitus is characterized by the stomach bubble on the left side and the inferior vena cava to the right of the spine. The liver is on the right, and the aortic arch is typically left-sided. These findings help establish the abdominal and thoracic situs during the segmental approach to congenital heart disease evaluation.

8Which of the following best describes the membranous septum?

A.Thick muscular portion between ventricles

B.Thin fibrous portion adjacent to the aortic and tricuspid valves

C.Muscular ridge in the right ventricle

D.Fibrous ring surrounding the mitral valve

Explanation: The membranous septum is a thin fibrous portion of the interventricular septum located adjacent to the aortic valve and the tricuspid valve. It is the site of membranous ventricular septal defects, the most common type of VSD. The membranous septum is much thinner than the muscular interventricular septum.

9What is the most common cardiac manifestation of Kawasaki disease?

A.Pericardial effusion

B.Coronary artery aneurysms

C.Mitral valve prolapse

D.Aortic root dilation

Explanation: Coronary artery aneurysms are the most serious and common cardiac manifestation of Kawasaki disease. These typically develop 2-4 weeks after disease onset. Echocardiographic surveillance of coronary arteries is essential in the acute and convalescent phases to detect aneurysm formation and guide therapy.

10Which echocardiographic finding is characteristic of dilated cardiomyopathy in children?

A.Left ventricular hypertrophy

B.Dilated left ventricle with reduced systolic function

C.Pericardial thickening

D.Asymmetric septal hypertrophy

Explanation: Dilated cardiomyopathy is characterized by a dilated left ventricle (and often right ventricle) with reduced systolic function. The ejection fraction is typically less than 30-40%. This contrasts with hypertrophic cardiomyopathy, which shows ventricular hypertrophy with preserved or hyperdynamic systolic function.

About the RDCS Pediatric Exam

The RDCS Pediatric Echocardiography exam validates expertise in pediatric cardiac sonography including normal anatomy, congenital heart disease, acquired heart disease, postoperative evaluations, and echocardiographic examination techniques. It requires the SPI exam as a prerequisite.

Questions

145 scored questions

Time Limit

3 hours

Passing Score

Scaled score 555 (~70%)

Exam Fee

$275 (ARDMS (American Registry for Diagnostic Medical Sonography) / Pearson VUE)

RDCS Pediatric Exam Content Outline

15%

Normal Anatomy

Cardiac embryology, normal cardiac anatomy, transitional circulation, great vessels, valves, coronary arteries

12%

Acquired Heart Disease

Cardiomyopathies, Kawasaki disease, endocarditis, pulmonary hypertension, pericardial effusion

25%

Congenital Anomalies

Septal defects (ASD, VSD), conotruncal defects (TOF, TGA), single ventricle, arch anomalies

19%

Postoperative Evaluation

TOF repair, Fontan procedure, Norwood/Glenn, arterial switch, VSD/ASD repairs, conduit evaluation

29%

Performing the Exam

2D imaging, M-mode, spectral Doppler, color Doppler, standard views, Bernoulli equation, shunt quantification

How to Pass the RDCS Pediatric Exam

What You Need to Know

Passing score: Scaled score 555 (~70%)
Exam length: 145 questions
Time limit: 3 hours
Exam fee: $275

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

RDCS Pediatric Study Tips from Top Performers

1Focus on Performing the Exam (29%) — master 2D imaging, M-mode, spectral/color Doppler, and standard pediatric views

2Study Congenital Anomalies thoroughly (25%) — know diagnostic criteria for ASD, VSD, TOF, TGA, single ventricle, and coarctation

3Learn postoperative evaluations (19%) — Fontan, Norwood, Glenn, TOF repair, and arterial switch assessments

4Master the Bernoulli equation for gradient calculations and shunt quantification (Qp:Qs)

5Know cardiac embryology and transitional circulation — fetal shunts and their postnatal changes

6Review Kawasaki disease echo findings — coronary artery aneurysms, LV dysfunction, and serial monitoring

Frequently Asked Questions

What is the RDCS Pediatric Echocardiography exam?

RDCS Pediatric Echocardiography (PE) is an ARDMS specialty exam that validates expertise in pediatric cardiac sonography including congenital heart disease evaluation, postoperative assessment, and echocardiographic techniques for neonates through adolescents.

How many questions are on the RDCS Pediatric exam?

The exam has 145 multiple-choice questions in 3 hours. The passing score is a scaled score of 555 (approximately 70%) on a 300-700 scale. Administered at Pearson VUE test centers.

What are the prerequisites for the RDCS Pediatric exam?

You must pass the SPI (Sonography Principles & Instrumentation) exam first, then complete an eligible pathway: student, graduate, or clinical experience route. Submit application and $275 fee to ARDMS.

What congenital heart defects should I study?

Focus on the most commonly tested defects: ASD, VSD, TOF (Tetralogy of Fallot), TGA (Transposition of Great Arteries), single ventricle, coarctation of aorta, AVSD, Ebstein anomaly, and left/right heart obstructive lesions.

How should I prepare for the RDCS Pediatric exam?

Plan for 150-200 hours of study over 12-16 weeks. Focus on Performing the Exam (29%) and Congenital Anomalies (25%) — together 54% of the exam. Master standard views, Doppler techniques, and key congenital heart defect diagnoses.