Paravalvular Leaks-From Diagnosis to Management

Area of Science:

• Cardiology
• Interventional Cardiology
• Cardiac Surgery

Background:

• The incidence of paravalvular leak (PVL) is rising due to increased heart valve replacement procedures in aging populations.
• PVL significantly impacts patient morbidity and mortality, necessitating effective management strategies.

Purpose of the Study:

• To review the epidemiology, clinical presentation, diagnostic assessment, and treatment options for paravalvular leak (PVL).
• To evaluate the current status and future directions for managing PVL, particularly focusing on transcatheter closure techniques.

Main Methods:

• Literature review focusing on epidemiological data, clinical manifestations, diagnostic modalities, and therapeutic interventions for PVL.
• Analysis of outcomes comparing transcatheter versus surgical PVL closure, including complication rates, mortality, and symptom improvement.
• Assessment of the role of multimodality imaging, including echocardiography, cardiac CT, and cardiac MRI, in PVL detection and characterization.

Main Results:

• Transcatheter PVL closure has low short-term complication rates (<10%) and comparable long-term outcomes to surgical closure, including mortality and reoperation rates.
• Current transcatheter closure devices are repurposed, highlighting the need for further development of dedicated percutaneous devices.
• Multimodality imaging is crucial for PVL diagnosis and quantification, with echocardiography as the primary tool, supported by CT and MRI for detailed assessment.

Conclusions:

• Clinicians must maintain vigilance for PVL in patients with heart valve replacements, especially those presenting with heart failure or hemolysis.
• Transcatheter PVL closure is a viable option for patients unsuitable for surgery, offering similar outcomes when performed in specialized centers.
• Further research and development of percutaneous closure devices are essential to optimize treatment outcomes for paravalvular leak.