ICU · Monitoring / ultrasound
Point-of-Care Ultrasound (POCUS) — Lung, Abdominal & Vascular
Also known as Point-of-care ultrasound · POCUS · Lung ultrasound · B-lines · FAST · eFAST · RUSH protocol · BLUE protocol · Compression ultrasonography · Lung point · Lung sliding
Point-of-care ultrasound (POCUS) is the clinician-performed, bedside ultrasound that answers specific clinical questions in real time, across three areas. Lung ultrasound: A-lines (normal), B-lines (interstitial syndrome — pulmonary oedema, ARDS, pneumonia), absent lung sliding (pneumothorax), the lung point (confirms pneumothorax), and the BLUE protocol for acute respiratory failure. Abdominal ultrasound: the FAST/eFAST (free fluid in trauma — Morison's pouch, splenorenal, pelvis, pericardium) and the non-trauma abdominal scan (AAA, gallbladder, hydronephrosis). Vascular ultrasound: compression ultrasonography for DVT (a non-compressible vein is a thrombus), ultrasound-guided line insertion, and AAA screening. POCUS integrates with the RUSH protocol (cardiac, lung, abdominal, vascular) for the bedside diagnosis of shock.
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Meet the patient
A 68-year-old man reaches the resus bay at 4am, breathless and clammy, saturating 84 per cent on 15 litres, respiratory rate 34, blood pressure 96 over 58. He has ischaemic cardiomyopathy with an ejection fraction of 30 per cent, severe COPD, and flew home from London three weeks ago. The chest X-ray shows bilateral infiltrates that no one trusts.[1]
The question that decides his next ten minutes is the one the BLUE protocol was built to answer: why is this lung failing? Is it wet with oedema, dry with a clot, consolidating with pneumonia, or simply wheezy and overdistended? Lung ultrasound plus a venous scan resolves it faster than the history, examination, CXR, and blood gas combined.[1]
References21ShowHide
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