Point-of-care ultrasound to assess left ventricular ejection fraction in heart failure in unselected patients in primary care: a systematic review.

Background: Heart failure (HF) is the most frequent cardiovascular pathology in primary care. Echocardiography is the gold standard for diagnosis, follow-up, and prognosis of HF. Point-of-care ultrasound (POCUS) is of growing interest in daily practice.