Pulmonary Hypertension in Left Heart Disease and Chronic Right Ventricular Failure

Area of Science:

• Cardiology
• Pulmonology
• Heart Failure Research

Background:

• Pulmonary hypertension due to left heart disease (PH-LHD) presents with elevated left atrial pressure, causing postcapillary pulmonary hypertension.
• PH-LHD is categorized into isolated postcapillary PH and combined postcapillary and precapillary PH based on pulmonary vascular resistance.
• Right ventricular failure is a frequent complication, exacerbating heart failure symptoms due to increased afterload.

Purpose of the Study:

• To review the diagnostic approaches and therapeutic limitations in managing PH-LHD.
• To explore emerging device-based interventions for PH-LHD.
• To highlight the need for further research in optimizing treatment strategies and patient selection for PH-LHD.

Main Methods:

• Diagnosis of PH-LHD is confirmed through right heart catheterization.
• Evaluation of the efficacy of existing pulmonary hypertension-specific therapies in the context of PH-LHD.
• Review of emerging device-based interventions, including interatrial shunt devices, pulmonary artery denervation, and MitraClip.

Main Results:

• Pulmonary hypertension due to left heart disease is characterized by elevated left atrial pressure and can progress to right ventricular failure.
• Standard pulmonary hypertension therapies have demonstrated limited effectiveness in treating PH-LHD.
• Interatrial shunt devices, pulmonary artery denervation, and MitraClip represent potential novel therapeutic avenues.

Conclusions:

• Pulmonary hypertension due to left heart disease requires specialized management due to its complexity and the limited efficacy of current treatments.
• Device-based interventions show promise for PH-LHD, but further investigation is crucial.
• Optimal patient selection and further research are essential for advancing therapeutic options for PH-LHD.