Coronary and circulatory support strategies for percutaneous transluminal coronary angioplasty in high-risk patients

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology

Background:

• Percutaneous Transluminal Coronary Angioplasty (PTCA) is now indicated for patients with acute ischemic syndromes, multivessel coronary artery disease, and impaired left ventricular function.
• High-risk PTCA necessitates advanced techniques to mitigate procedural risks.

Purpose of the Study:

• To review and categorize the various coronary and systemic circulatory support techniques used as adjuncts to high-risk PTCA.
• To evaluate the potential of these support devices in improving angioplasty safety and expanding patient candidacy for revascularization.

Main Methods:

• Review of local coronary support techniques: perfusion balloon catheter, coronary stent, directional coronary atherectomy, laser balloon angioplasty, perfluorocarbon coronary perfusion, coronary sinus retroperfusion, and distal coronary hemoperfusion.
• Review of systemic circulatory support techniques: intraaortic balloon counterpulsation, cardiopulmonary support, hemopump, and left heart partial bypass.

Main Results:

• A range of local coronary and systemic circulatory support devices have been developed to minimize risks associated with high-risk PTCA.
• These support strategies aim to stabilize patients during complex angioplasty procedures.

Conclusions:

• Despite potential complications, circulatory support devices may improve the safety of coronary angioplasty.
• These adjuncts can enable PTCA in patients previously considered unsuitable for revascularization.