Comparison of Supine and Sitting Pulmonary Pressures in Ambulatory Heart Failure Patients Using the Novel Cordella Pulmonary Pressure System

This study presents the largest paired comparison of supine and sitting PAP and demonstrates a high degree of correlation between seated and supine measures of PAP. Supine-seated differences may reflect venous capacitance and preload reserve, providing novel physiologic insights into HF phenotyping. Seated PAP measurements are a valid and reliable alternative to supine measurements for HF patients with PAP sensors. Given patient preference for seated measurements and their closer reflection of daily physiologic status, incorporating seated PAP into routine monitoring may enhance adherence and optimize remote HF management.