Which of the following is an indication for using an Impella?

• A. Hemodynamically unstable patients
• B. Stable CAD without instability
• C. Normal LV function
• D. No LV dysfunction

Answer: (A)

Impella is a temporary, percutaneous left ventricular assist device used to provide immediate circulatory support when the heart cannot maintain adequate systemic perfusion, such as in cardiogenic shock. In hemodynamically unstable patients, cardiac output is severely reduced, and rapidly stabilizing perfusion is critical; Impella unloads the left ventricle and delivers forward flow to the aorta, helping to raise mean arterial pressure and improve end-organ perfusion while potentially reducing myocardial work. This makes it an appropriate indication in unstable hemodynamics or cardiogenic shock, including scenarios like high-risk PCI where short-term LV support is needed. By contrast, stable CAD without instability, normal LV function, or no LV dysfunction do not require mechanical circulatory support, since the heart is meeting the body's circulation demands without intervention.