Free CIR Interventional Radiology Techniques & Procedures Questions and Answers — Questions and Answers

Question 1: What is the purpose of balloon angioplasty?

Measure arterial pressure
Deliver medication to the heart
Open narrowed blood vessels (Correct answer)
Replace damaged heart valves

Correct answer: Open narrowed blood vessels

Balloon angioplasty is a medical procedure designed to open narrowed or blocked blood vessels, typically caused by plaque buildup (atherosclerosis). A catheter with a deflated balloon is guided to the blockage, and the balloon is then inflated to compress the plaque against the artery walls, restoring proper blood flow. This intervention helps alleviate symptoms and improve cardiac function.

Question 2: Which device is commonly used to keep an artery open after angioplasty?

Catheter
Stent (Correct answer)
Pacemaker lead
Electrode

Correct answer: Stent

A stent is a small, mesh-like tube commonly used to keep an artery open after balloon angioplasty. It is expanded within the narrowed vessel to act as a scaffold, preventing the artery from collapsing or re-narrowing (restenosis). Stents significantly improve the long-term success of angioplasty by maintaining vessel patency and ensuring continuous blood flow to the heart muscle.

Question 3: Which imaging technique is used during interventional radiology procedures to visualize vessels in real time?

MRI
Fluoroscopy (Correct answer)
Ultrasound
CT scan

Correct answer: Fluoroscopy

Fluoroscopy is an essential imaging technique used during interventional radiology procedures to visualize blood vessels and internal structures in real-time. It uses continuous X-rays to produce dynamic images on a monitor, allowing physicians to precisely guide catheters, wires, and other devices through the vascular system. This real-time guidance is critical for accurate and safe interventions.

Question 4: Why is a guidewire used in interventional radiology procedures?

To inject contrast dye
To monitor heart rate
To navigate and position tools in vessels (Correct answer)
To regulate blood pressure

Correct answer: To navigate and position tools in vessels

A guidewire is a thin, flexible wire with a steerable tip that is initially advanced through a blood vessel to the target area. It serves as a crucial rail over which catheters, balloons, and stents can then be safely and precisely threaded. This allows for controlled navigation and accurate positioning of interventional tools within the complex vascular anatomy.

Question 5: What is the function of contrast agents in interventional radiology?

To disinfect the catheter site
To induce clot formation
To visualize blood vessels (Correct answer)
To anesthetize the patient

Correct answer: To visualize blood vessels

Contrast agents, usually iodine-based, are injected into the bloodstream during interventional radiology procedures to visualize blood vessels. These agents absorb X-rays, making the vessels appear opaque on fluoroscopic images, allowing physicians to identify blockages, aneurysms, and other vascular abnormalities. This enhanced visualization is critical for guiding interventions and assessing vascular anatomy.

Question 6: What complication can occur if a catheter is incorrectly positioned during a cardiac procedure?

Increased cardiac output
Improved blood flow
Vessel dissection or perforation (Correct answer)
Enhanced vessel healing

Correct answer: Vessel dissection or perforation

Incorrect catheter positioning during a cardiac procedure can lead to serious complications such as vessel dissection or perforation. A dissection occurs when the layers of the vessel wall separate, while a perforation is a puncture through the vessel. Both can cause severe internal bleeding, require emergency intervention, and pose significant life-threatening risks to the patient.

Question 7: What does PCI stand for in interventional cardiology?

Peripheral Cardiac Imaging
Percutaneous Coronary Intervention (Correct answer)
Pulmonary Coronary Integration
Primary Catheter Introduction

Correct answer: Percutaneous Coronary Intervention

PCI stands for Percutaneous Coronary Intervention, a non-surgical procedure used to treat narrowed or blocked coronary arteries. It typically involves using a balloon to open the artery (angioplasty) and often placing a stent to keep it open, thereby restoring blood flow to the heart. PCI is a common and effective treatment for coronary artery disease.

Question 8: Which medication is commonly given before or during a coronary stent procedure?

Beta-blockers
Anticoagulants (Correct answer)
Diuretics
Statins

Correct answer: Anticoagulants

Anticoagulants, such as heparin or bivalirudin, are commonly administered before or during a coronary stent procedure to prevent blood clot formation. The manipulation of catheters and the placement of a stent can trigger the body's clotting response. Preventing clots is crucial to maintain blood flow through the newly opened artery and prevent acute stent thrombosis, a serious complication.

Question 9: Which interventional technique is used to remove a thrombus from a blood vessel?

Angioplasty
Atherectomy
Thrombectomy (Correct answer)
Endarterectomy

Correct answer: Thrombectomy

Thrombectomy is a medical procedure specifically designed to remove a thrombus (blood clot) from a blood vessel. This interventional technique aims to restore blood flow by physically extracting or dissolving the clot, which is crucial in conditions like deep vein thrombosis or acute arterial occlusion. Other options like angioplasty or atherectomy address vessel narrowing but not primarily clot removal.

Free CIR Interventional Radiology Techniques & Procedures Questions and Answers

What is the purpose of balloon angioplasty?