Vascular access & angiographic technique
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1What is the recommended anatomical landmark for initial puncture during transradial access to avoid the flexor retinaculum?
- A5 cm distal to the radial styloid process
- BAt the radial styloid process
- C2 cm proximal to the radial styloid process
- DAt the level of the antecubital fossa
Correct answer: C — 2 cm proximal to the radial styloid process
Accessing 2 cm proximal to the radial styloid process avoids the flexor retinaculum and the tapering branches of the artery, whereas other sites increase risk of structural complications.
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2Current clinical guidelines strongly endorse a 'radial-first' approach for diagnostic angiography and PCI primarily because of which benefit?
- ALower contrast volume requirements
- BFaster overall procedure completion in every case
- CElimination of the need for anticoagulation
- DProfound reductions in access-site bleeding, major vascular complications, and mortality
Correct answer: D — Profound reductions in access-site bleeding, major vascular complications, and mortality
The radial-first paradigm shift is driven by profound reductions in access-site bleeding, major vascular complications, and overall mortality, particularly in ACS patients.
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3Entering the aortic arch from a right radial approach typically requires which catheter curve, compared with the JL4.0 standard used femorally?
- AA larger curve, such as a JL5.0
- BThe identical JL4.0 curve
- CA smaller curve, such as a JL3.5
- DA pigtail catheter instead of a Judkins curve
Correct answer: C — A smaller curve, such as a JL3.5
Entering the aortic arch from the right radial approach requires a smaller catheter curve than femoral access, such as a JL3.5 instead of a JL4.0, to achieve stable seating.
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4The right coronary artery originates from which aortic sinus?
- AThe left coronary sinus
- BThe right posterior (non-coronary) sinus
- CThe anterior (right) coronary sinus
- DThe commissure between the left and non-coronary sinuses
Correct answer: C — The anterior (right) coronary sinus
The RCA originates from the anterior coronary sinus, while the LMCA originates from the left coronary sinus.
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5While positioning for a coronary angiogram, the operator selects a right anterior oblique (RAO) view. To confirm correct orientation, the thoracic spine should appear on which side of the image?
- AThe right
- BThe center
- CIt alternates depending on cranial or caudal angulation
- DThe left
Correct answer: D — The left
In the RAO view, the image intensifier is on the patient's right, so the thoracic spine appears on the left of the screen with ribs descending to the right.
Diagnostic catheterization & hemodynamics
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6Despite the availability of cardiac MRI, CT angiography, and advanced echocardiography, invasive cardiac catheterization remains the gold standard primarily because of which unique capability?
- AIt is the only modality that can visualize the coronary arteries at all
- BIt carries zero procedural risk
- CIt requires no contrast media
- DIt precisely quantifies pressure gradients and directly informs interventional or surgical planning
Correct answer: D — It precisely quantifies pressure gradients and directly informs interventional or surgical planning
Despite advances in non-invasive imaging, catheterization remains the gold standard because it uniquely and precisely quantifies pressure gradients, resolves ambiguous clinical presentations, and directly informs interventional or surgical planning.
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7A complete blood count (CBC) is obtained before catheterization primarily to assess which risk?
- AContrast-induced nephropathy risk
- BHemorrhagic complication risk, via baseline hemoglobin and platelet levels
- CArrhythmia risk
- DRadial artery spasm risk
Correct answer: B — Hemorrhagic complication risk, via baseline hemoglobin and platelet levels
A CBC establishes baseline hemoglobin and platelet levels, quantifying the risk of hemorrhagic complications given the anticipated use of high-dose anticoagulant and antiplatelet medications.
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8Left ventricular end-diastolic pressure (LVEDP) normally ranges between:
- A4 to 12 mmHg
- B25 to 35 mmHg
- C0 to 5 mmHg
- D15 to 25 mmHg
Correct answer: A — 4 to 12 mmHg
In a healthy adult, resting LVEDP typically falls within 4 and 12 mmHg, with higher values indicating impaired relaxation or overt diastolic dysfunction.
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9Which of the following is a classic clinical feature of hypovolemic shock?
- ANormal filling pressures and normal SVR
- BLow PCWP and high Systemic Vascular Resistance
- CLow SVR and elevated Central Venous Pressure
- DHigh PCWP and high Cardiac Output
Correct answer: B — Low PCWP and high Systemic Vascular Resistance
Hypovolemic shock is characterized by a reduction in filling pressures (low PCWP) and high SVR due to compensatory vasoconstriction.
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10Which intracoronary imaging modality provides microscopic, cross-sectional imaging of the vessel wall to characterize plaque composition and ensure precise stent expansion?
- AOptical Coherence Tomography (OCT)
- BFractional Flow Reserve (FFR)
- CTransesophageal Echocardiography (TOE)
- DFluoroscopy
Correct answer: A — Optical Coherence Tomography (OCT)
Both OCT and Intravascular Ultrasound (IVUS) provide high-resolution cross-sectional images of the coronary vessel wall to optimize stent apposition.
PCI & intracoronary imaging
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11The fundamental mechanics of PCI involve gaining arterial access, advancing a guidewire across a stenotic lesion, and utilizing balloon dilation, followed by which final step?
- ADeployment of a metallic scaffold to prevent elastic recoil
- BImmediate surgical closure of the arteriotomy
- CInjection of a chemical sclerosing agent
- DPlacement of a temporary external compression device only
Correct answer: A — Deployment of a metallic scaffold to prevent elastic recoil
PCI mechanics conclude with deployment of a metallic scaffold (stent) to prevent elastic recoil after balloon dilation mechanically disrupts the plaque and stretches the arterial wall.
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12IVUS utilizes high-frequency sound waves in what general range, and does NOT require which additional step during acquisition?
- A1-2 MHz, and requires contrast clearance in every case
- B300-400 MHz, and requires general anesthesia
- C40-60 MHz, and does not require contrast clearance
- D40-60 MHz, but requires a full week of preparation
Correct answer: C — 40-60 MHz, and does not require contrast clearance
IVUS uses 40-60 MHz sound waves, which easily penetrate the blood pool, meaning image acquisition does not require contrast clearance unlike OCT.
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13Which trial demonstrated that OCT-guided PCI achieves minimum stent areas non-inferior to IVUS and superior to conventional angiography?
- AVALIDATE-SWEDEHEART
- BILUMIEN III: OPTIMIZE PCI
- CULTIMATE
- DPARTNER 3
Correct answer: B — ILUMIEN III: OPTIMIZE PCI
The randomized ILUMIEN III: OPTIMIZE PCI trial demonstrated that an OCT-guided strategy achieves minimum stent areas non-inferior to IVUS and superior to conventional angiography.
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14During an intervention on the right coronary artery, the patient develops profound sinus bradycardia, hypotension, and vasodilation without reflex tachycardia. What is this physiologic triad known as?
- ABezold-Jarisch Reflex
- BBainbridge Reflex
- CVasovagal Syncope
- DCushing's Triad
Correct answer: A — Bezold-Jarisch Reflex
The Bezold-Jarisch reflex is triggered by ischemia or stretch in the inferoposterior wall and manifests as bradycardia, hypotension, and vasodilation, distinctly lacking the reflex tachycardia seen in typical shock.
Structural interventions & mechanical support
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15An intra-aortic balloon pump augments coronary and cerebral perfusion through which timing mechanism?
- ARemaining continuously inflated throughout the cardiac cycle
- BInflating during systole and deflating during diastole
- CInflating during early diastole and deflating just prior to systole
- DInflating only in response to a sensed arrhythmia
Correct answer: C — Inflating during early diastole and deflating just prior to systole
The IABP inflates during early diastole to augment diastolic aortic root pressure and coronary/cerebral perfusion, then rapidly deflates just prior to systole to reduce left ventricular afterload.
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16The modern cardiac catheterization laboratory has evolved from managing epicardial coronary artery disease alone into a theater for which broader scope of practice?
- AStructural heart interventions, advanced tissue diagnostics, and hemodynamic support
- BExclusively diagnostic coronary angiography with no therapeutic capability
- COpen surgical valve replacement only
- DNon-invasive imaging exclusively
Correct answer: A — Structural heart interventions, advanced tissue diagnostics, and hemodynamic support
The cath lab has evolved from purely coronary disease management via balloon angioplasty and bare-metal stenting into a complex theater for structural heart interventions, tissue diagnostics, and hemodynamic support.
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17TAVR complications are classified into which three primary categories?
- ADevice-related, vascular access-site, and systemic complications
- BOnly anesthesia-related complications
- COnly radiation-related complications
- DOnly contrast-related complications
Correct answer: A — Device-related, vascular access-site, and systemic complications
TAVR complications are classified into three primary categories: device-related (PVL, thrombosis), vascular access-site (pseudoaneurysm, dissection, AV fistula), and systemic (atheroembolism, stroke).
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18Placement of multiple TEER clips on the mitral valve carries which specific procedural risk that must be monitored via continuous transmitral gradient measurement?
- AImmediate cardiac arrest in all cases
- BGuaranteed device embolization
- CIatrogenic mitral stenosis
- DPermanent AV block
Correct answer: C — Iatrogenic mitral stenosis
Transmitral gradients must be monitored continuously during multi-clip TEER procedures, as placing multiple clips risks creating iatrogenic mitral stenosis.
Pharmacology & sedation
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19Unfractionated heparin exerts its anticoagulant effect primarily by:
- ABlocking the GPIIb/IIIa receptor on platelets
- BInhibiting vitamin K epoxide reductase
- CDirectly inhibiting thrombin without a cofactor
- DBinding antithrombin III and accelerating inhibition of thrombin and Factor Xa
Correct answer: D — Binding antithrombin III and accelerating inhibition of thrombin and Factor Xa
Heparin binds antithrombin III, greatly accelerating its natural inhibition of thrombin (IIa) and Factor Xa.
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20The Ramsay Sedation Scale and the Richmond Agitation-Sedation Scale (RASS) serve which function during procedural sedation?
- AMeasuring the patient's coronary artery calcium score
- BAllowing consistent titration and documentation of sedation depth across staff
- CGrading the severity of aortic stenosis
- DClassifying coronary artery perforation
Correct answer: B — Allowing consistent titration and documentation of sedation depth across staff
The Ramsay Sedation Scale and RASS are standardized scales that allow consistent titration and documentation of sedation depth across different staff members.
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21Unfractionated heparin (UFH) anticoagulation during PCI is monitored via which laboratory parameter?
- AInternational Normalized Ratio (INR)
- BActivated Clotting Time (ACT)
- CPlatelet count alone
- DSerum creatinine
Correct answer: B — Activated Clotting Time (ACT)
UFH remains the standard anticoagulant during PCI, monitored via Activated Clotting Time (ACT) to ensure appropriate anticoagulation intensity.
Emergencies & radiation safety
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22A vasovagal reaction during sheath removal classically presents with which combination of findings?
- ATachycardia, hypotension, and fever
- BTachycardia, hypertension, and pallor
- CBradycardia, hypotension, and diaphoresis
- DBradycardia, hypertension, and flushing
Correct answer: C — Bradycardia, hypotension, and diaphoresis
Vasovagal reactions classically present with bradycardia, hypotension, pallor, and diaphoresis, often triggered by sheath manipulation, pain, or anxiety.
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23What is the first step in the stepwise response to suspected cardiac perforation/tamponade?
- AAdminister a GPIIb/IIIa inhibitor
- BImmediately call cardiac surgery and wait for their arrival before doing anything else
- CIncrease the heparin infusion rate
- DNotify the operator and team immediately
Correct answer: D — Notify the operator and team immediately
Immediate notification of the operator and team is the essential first step, enabling rapid coordinated response.
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24In radiation safety, the acronym ALARA directs staff to keep exposure at what level relative to clinical necessity?
- AAs Low As Reasonably Achievable
- BAs Long As Radiographically Adequate
- CAlways Limit All Radiographic Anomalies
- DAs Little Additional Radiation as Available
Correct answer: A — As Low As Reasonably Achievable
ALARA (As Low As Reasonably Achievable) is the guiding principle that every radiation exposure should be justified by clinical benefit and minimized without compromising the case's diagnostic or therapeutic goal.
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25In the fluoroscopic imaging chain, which component produces the X-ray beam?
- AThe flat-panel detector
- BThe X-ray generator
- CThe C-arm mechanical gantry alone
- DThe dosimetry badge
Correct answer: B — The X-ray generator
The X-ray generator produces the beam, which passes through the patient and is captured by the detector, with the image displayed in real time.
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About these free RCIS questions
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What topics do these RCIS questions cover?
They mirror the RCIS blueprint weighting: diagnostic catheterization and hemodynamics, coronary anatomy and angiographic technique, percutaneous coronary intervention and intracoronary imaging, structural interventions and mechanical support, pharmacology, and cath lab emergencies with radiation safety.
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