What is the primary goal of coronary artery bypass grafting (CABG)?
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Explore surgical procedures, catheter-based interventions, and the criteria for invasive management of cardiac diseases.
This deck provides a comprehensive understanding of advanced interventional and surgical options in cardiology, enabling clinicians to make informed decisions about invasive management, interpret procedural indications, and understand procedural techniques—key skills for cardiologists and cardiac surgeons aiming to optimize patient outcomes.
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| # | Front | Back | Hint |
|---|---|---|---|
| 1 | What is the primary goal of coronary artery bypass grafting (CABG)? | The primary goal of CABG is to restore adequate blood flow to ischemic myocardium by bypassing obstructed coronary arteries using grafts, thereby reducing angina and preventing myocardial infarction. | Think 'bypass' as creating an alternative route for blood. |
| 2 | Which patients are typically considered candidates for surgical aortic valve replacement (SAVR) versus transcatheter aortic valve implantation (TAVI)? | SAVR is preferred for low to intermediate surgical risk patients, especially with favorable anatomy, while TAVI is indicated for high surgical risk or in patients with comorbidities that make open surgery risky. | Risk stratification guides valve intervention choice. |
| 3 | Describe the key procedural steps of percutaneous coronary intervention (PCI). | PCI involves vascular access (usually femoral or radial), crossing the lesion with a guidewire, balloon angioplasty to dilate the stenosis, and deployment of a stent to maintain vessel patency. | Think 'Guide, Dilate, Stent' as the main steps. |
| 4 | What are the common indications for invasive management in stable angina? | Invasive management is indicated when patients have significant ischemia, high-risk features, or symptoms refractory to optimal medical therapy, especially if non-invasive testing suggests extensive coronary disease. | Consider invasive approach if symptoms or risk outweigh medical management. |
| 5 | Name two types of minimally invasive cardiac surgery techniques and their typical applications. | Video-assisted thoracoscopic surgery (VATS) for mitral valve repair and minimally invasive mitral or atrial septal defect repairs; robotic surgery for complex valve procedures. | Minimally invasive = smaller incisions, faster recovery. |
| 6 | What is a percutaneous transluminal septal myocardial ablation (PTSMA), and when is it used? | PTSMA is a catheter-based procedure that induces a controlled infarction of the hypertrophied septal myocardium to reduce outflow obstruction in hypertrophic obstructive cardiomyopathy (HOCM). | Think 'septal reduction' via catheter for HOCM. |
| 7 | Which criteria are used to determine eligibility for transcatheter edge-to-edge repair (TEER) in mitral regurgitation? | Candidates typically have symptomatic moderate-to-severe or severe mitral regurgitation, suitable anatomy (e.g., central regurgitant jet, adequate leaflet tissue), and high surgical risk patients. | Assess anatomy and surgical risk before TEER. |
| 8 | What are the main complications associated with transcatheter aortic valve replacement (TAVI)? | Complications include vascular injury, paravalvular leak, stroke, conduction disturbances requiring pacemaker implantation, and device embolization. | Monitor for these post-procedure issues. |
| 9 | Explain the concept of hybrid coronary revascularization. | Hybrid revascularization combines minimally invasive surgical bypass of the left internal mammary artery to the LAD with percutaneous stenting of other coronary arteries, offering a tailored approach for complex multivessel disease. | Combine surgery and PCI for optimal results. |
| 10 | What is the role of intravascular ultrasound (IVUS) during PCI? | IVUS provides real-time imaging of vessel walls and lumen, helping optimize stent sizing, placement, and apposition, thereby reducing complications like restenosis or stent thrombosis. | Think of IVUS as an 'ultrasound inside the vessel.' |
| 11 | Describe the criteria for urgent surgical intervention in acute aortic dissection. | Urgent surgery is indicated in Type A dissections with signs of cardiac tamponade, aortic rupture, or malperfusion; Type B dissections typically are managed medically unless complicated. | Type A = surgical emergency. |
| 12 | What is the purpose of the Maze procedure in cardiac surgery? | The Maze procedure aims to create a controlled scar pattern in the atria to interrupt abnormal electrical pathways causing atrial fibrillation, restoring sinus rhythm. | Think 'maze' as creating a path for normal conduction. |
| 13 | In what scenarios is percutaneous mitral valve repair preferred over surgical repair? | Percutaneous repair is preferred in high surgical risk patients with suitable anatomy, especially those with prohibitive operative risk or failed previous surgeries. | Use less invasive methods when surgery poses high risk. |
| 14 | What are the main differences between TAVI and surgical aortic valve replacement in terms of indications? | TAVI is indicated mainly for high surgical risk or inoperable patients, while SAVR is preferred for low to moderate risk patients with suitable anatomy. | Risk level guides the choice. |
| 15 | Describe the use of rotational atherectomy during PCI. | Rotational atherectomy uses a diamond-coated burr to ablate calcified plaques, facilitating stent deployment in heavily calcified arteries. | Think 'rotational' as grinding away calcium. |
| 16 | Which imaging modality is most useful intraoperatively during complex valve surgeries? | Transesophageal echocardiography (TEE) provides real-time visualization of valve function and repair integrity during surgery. | TEE = intraoperative 'eye'. |
| 17 | What is the main advantage of using a hybrid operating room for cardiac interventions? | A hybrid OR allows simultaneous surgical and catheter-based procedures, facilitating complex interventions with immediate surgical backup if needed. | Hybrid = surgery + cath lab in one place. |
| 18 | Name an example of a percutaneous device used for left atrial appendage occlusion. | The Watchman device is a common percutaneous occlusion device used to prevent stroke in patients with atrial fibrillation who cannot tolerate anticoagulation. | Think 'Watchman' as guarding the atrial appendage. |
| 19 | What are the typical indications for performing a Bentall procedure? | The Bentall procedure is indicated for combined aortic root and valve disease, such as in aneurysm of the ascending aorta with aortic valve pathology, especially in Marfan syndrome. | Bentall = root + valve replacement. |
| 20 | How does percutaneous balloon valvuloplasty differ from surgical valvuloplasty in treating stenotic valves? | Percutaneous balloon valvuloplasty is less invasive, performed via catheter to dilate stenotic valves (e.g., mitral or pulmonary), while surgical valvuloplasty involves open-heart surgery for direct repair or replacement. | Balloon = catheter-based; surgical = open approach. |
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