NPPB and hydrops fetalis: A second, “non-urgent” (NT-proBNP 400–2000 ng/L) HF diagnosis pathway, involves an outpatient TTE being performed and then a remote review and triage of the referral and TTE result by a HF consultant resulting in discharge if HF is not identified, an urgent outpatient HF clinic appointment if HF is present, or onward referral into relevant specialities (e.g. General Cardiology, Cardiothoracic surgery, Arrhythmia clinic, etc.).