Mechanical Circulatory Support with Impella: Principles, Evidence, and Daily Practice

Area of Science:

• Cardiology
• Interventional Cardiology
• Mechanical Circulatory Support

Background:

• The Impella microaxial pump is a percutaneous mechanical circulatory support (MCS) device.
• It is indicated for cardiogenic shock (CS) and high-risk percutaneous coronary intervention (HR-PCI).
• Despite widespread use, randomized evidence supporting its benefits is limited, and complication rates are a concern.

Purpose of the Study:

• To review the principles, evidence, and practical considerations of the Impella CP device.
• To examine its use in both CS and HR-PCI settings.
• To discuss current issues and future expectations for Impella technology.

Main Methods:

• Review of existing literature on Impella CP.
• Analysis of evidence for its use in CS and HR-PCI.
• Discussion of clinical considerations and complications.

Main Results:

• Impella increases coronary perfusion, reduces myocardial oxygen demand, and improves peripheral organ perfusion.
• The device is used in emergency CS and pre-emptive HR-PCI.
• Concerns exist regarding limited randomized evidence and complication rates.

Conclusions:

• The Impella CP is a widely used MCS device with established benefits in specific cardiovascular scenarios.
• Further randomized trials are needed to solidify evidence for its efficacy and safety.
• Ongoing evaluation of complication rates and practical considerations is crucial for optimal patient management.