Neurologic complications of nonrheumatic valvular heart disease

Area of Science:

• Cardiology
• Neurology
• Thrombosis

Background:

• Valvular heart disease (VHD) frequently leads to neurologic complications, most commonly cerebral embolism due to thrombus formation on abnormal heart valves.
• Mechanical prosthetic heart valves are highly thrombogenic, necessitating long-term anticoagulation and increasing thromboembolism risk.
• Transcatheter aortic valve replacement (TAVR) presents an alternative for high-risk patients but carries a risk of cerebral ischemia.

Purpose of the Study:

• To explore the link between valvular heart disease and neurologic complications.
• To discuss the risks and benefits of anticoagulation in VHD patients.
• To examine the evolving role of new oral anticoagulants in managing VHD-related thromboembolism.

Main Methods:

• Literature review of studies on VHD, neurologic complications, and anticoagulation therapies.
• Analysis of the mechanisms of thrombus formation in VHD and prosthetic valves.
• Evaluation of the safety and efficacy profiles of warfarin and newer oral anticoagulants.

Main Results:

• Cerebral embolism is a primary neurologic complication of VHD.
• Anticoagulation is crucial for preventing thromboembolism but carries hemorrhagic risks.
• Newer oral anticoagulants show promise but their use in mechanical heart valve patients is still under investigation.

Conclusions:

• Effective management of VHD-associated neurologic complications necessitates a thorough understanding of disease natural history.
• Balancing the risks of VHD, anticoagulation, and procedural interventions like TAVR is critical.
• Further research is needed to optimize anticoagulation strategies for patients with mechanical heart valves.