[Circulatory assist devices in cardiology]

Area of Science:

• Cardiology
• Intensive Care Medicine
• Biomedical Engineering

Context:

• Acute myocardial infarction (AMI) carries a significant risk of cardiogenic shock (1 in 13 patients).
• Acute myocardial failure can result from valvular leakage, shunts, or myocarditis.
• Mechanical assist devices are vital for hemodynamic stabilization in critical cardiac conditions.

Purpose:

• To review the therapeutic applications of minimal-invasive mechanical assist devices in cardiology and intensive care.
• To compare the mechanisms of action and indications for different types of cardiac support devices.
• To highlight the role of mechanical circulatory support in managing cardiogenic shock and high-risk procedures.

Summary:

• Minimal-invasive mechanical assist devices, such as intra-aortic balloon pulsation (IABP), axial screw pumps, and centrifugal pumps, provide essential cardiac support.
• IABP reduces afterload and increases diastolic pressure, while pumps offer independent circulatory support.
• These devices are indicated for cardiogenic shock, high-risk percutaneous coronary intervention, and as a bridge to transplantation, reducing myocardial workload and improving organ perfusion.

Impact:

• Mechanical assist devices prevent irreversible organ damage by reducing myocardial workload and enhancing perfusion in shock states.
• They provide hemodynamic stabilization for patients with severe left ventricular dysfunction or awaiting cardiac surgery.
• Future technical advancements, particularly portable devices, promise to expand therapeutic options in critical care cardiology.