Pulmonary congestion assessed by lung ultrasound in stable ambulatory patients with heart failure and preserved ejection fraction in primary care.

Higher B-line count was associated with higher systolic blood pressure, pulmonary crackles, and increased N-terminal pro-brain natriuretic peptide and cancer antigen 125 levels.

In contrast, no significant relationship was found between B-lines and 6-minute walking test, frailty index, or HF-related quality of life.