CCI Study Guide 2026

Everything you need to pass the CCI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 CCI Exam Format at a Glance

170

Questions

180 min

Time Limit

70%

Passing Score

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📚 CCI Topics to Study (69)

RCIS · 11 cards RCS · 11 cards Cardiac Anatomy and Physiology · 7 cards Cardiac Anatomy and Physiology · 7 cards Cardiac Anatomy and Physiology · 7 cards Cardiac Anatomy and Physiology · 7 cards Cardiac Stress Testing Protocols · 7 cards Cardiac Stress Testing Protocols · 7 cards Cardiac Stress Testing Protocols · 7 cards Cardiac Stress Testing Protocols · 7 cards Cerebrovascular Duplex Examinations · 7 cards Cerebrovascular Duplex Examinations · 7 cards Cerebrovascular Duplex Examinations · 7 cards Cerebrovascular Duplex Examinations · 7 cards ECG Rhythm Interpretation · 7 cards ECG Rhythm Interpretation · 7 cards ECG Rhythm Interpretation · 7 cards ECG Rhythm Interpretation · 7 cards Invasive Catheterization Procedures · 7 cards Invasive Catheterization Procedures · 7 cards Invasive Catheterization Procedures · 7 cards Invasive Catheterization Procedures · 7 cards Pacemaker and Implantable Device Assessment · 7 cards Pacemaker and Implantable Device Assessment · 7 cards Pacemaker and Implantable Device Assessment · 7 cards Peripheral Arterial Evaluation · 7 cards Peripheral Arterial Evaluation · 7 cards Peripheral Arterial Evaluation · 7 cards Peripheral Arterial Evaluation · 7 cards Peripheral Venous Evaluation · 7 cards

See all 69 topics as flashcards →

✍️ Sample CCI Questions & Answers

1. Turbulent flow in a blood vessel is most likely to occur when the Reynolds number exceeds:

✓ 2000

Reynolds numbers above approximately 2000 are associated with the transition from laminar to turbulent flow.

2. A sonographer asks a patient to perform the Valsalva maneuver during a venous insufficiency study while interrogating the saphenofemoral junction. What is the primary purpose of this technique?

✓ To increase intra-abdominal pressure and test for valvular competence

The Valsalva maneuver (straining against a closed glottis) significantly increases intra-thoracic and intra-abdominal pressure. This pressure is transmitted down the venous system. In a patient with competent valves, this will cause flow to slow or cease. If the valves are incompetent, the increased proximal pressure will cause blood to flow backward (reflux) past the faulty valve, which can be detected by Doppler.

3. An aneurysm has the potential to be caused by all but which of the following uncommon arterial wall infections?

✓ Measles

Explanation: Arterial wall infections such as Staphylococcus, Tuberculosis, and Syphilis can contribute to the development of aneurysms by weakening the arterial wall. However, Measles is not typically associated with arterial wall infections that lead to aneurysms.

4. A spectral Doppler waveform showing systolic flow above and diastolic flow below the baseline in an arterial study most likely indicates:

✓ Bidirectional flow with forward systole and reverse diastole (triphasic pattern)

A triphasic arterial waveform shows rapid systolic forward flow, brief early diastolic flow reversal, and then slow antegrade late diastolic flow, characteristic of normal peripheral arteries.

5. During isovolumetric contraction, which valves are CLOSED?

✓ All four valves are closed

During isovolumetric contraction, ventricular pressure rises but no blood is ejected; all four valves remain closed until ventricular pressure exceeds great vessel pressure.

6. During ventriculography, which projection best demonstrates the posterobasal wall of the left ventricle?

✓ 45° LAO projection

The 45–60° LAO projection separates the LV into septal and lateral walls and is the best view to assess the posterobasal (inferior) wall of the left ventricle.

🎯 Free CCI Practice Tests

RCS · 11 questions RCIS · 11 questions Vascular Hemodynamics Principles · 7 questions Peripheral Arterial Evaluation · 7 questions Peripheral Arterial Evaluation · 7 questions Peripheral Arterial Evaluation · 7 questions Peripheral Arterial Evaluation · 7 questions Pacemaker and Implantable Device Assessment · 7 questions Pacemaker and Implantable Device Assessment · 7 questions Vascular Hemodynamics Principles · 7 questions

📖 CCI Guides & Articles

Your CCI Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

🃏 CCI Flashcards (475)🏆 CCI Exam Simulation

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