Targeting Preload in Heart Failure: Splanchnic Nerve Blockade and Beyond

Area of Science:

• Cardiovascular Physiology
• Heart Failure Pathophysiology

Background:

• Preload augmentation increases cardiac output by enhancing circulating blood volume.
• The splanchnic vascular system is a major reservoir for blood volume.
• In heart failure, altered venous capacitance complicates preload management.

Purpose of the Study:

• To review the role of splanchnic circulation in heart failure.
• To discuss therapeutic strategies for managing cardiac preload.
• To explore pharmacological and device-based interventions.

Main Methods:

• Literature review of splanchnic circulation and heart failure.
• Analysis of preload augmentation mechanisms.
• Discussion of therapeutic targets and interventions.

Main Results:

• Splanchnic vascular redistribution is crucial for regulating cardiac filling pressures.
• Dysfunctional splanchnic capacitance contributes to heart failure.
• Therapies targeting splanchnic circulation may improve outcomes.

Conclusions:

• Understanding splanchnic circulation is essential for heart failure management.
• Pharmacological and device-based approaches offer potential for preload regulation.
• Targeting venous capacitance can improve exercise capacity and quality of life.