The algorithm for SEARCH 8Es.

Profiles: A, lung sliding and A lines in both the lungs; A’, A profile without lung sliding and lung point; B, anterior-predominant bilateral B lines with lung sliding; B’, B profile without lung sliding; A/B, anterior-predominant B lines in one lung and predominant A lines in the other; C, anterior alveolar consolidation(s). Abbreviations: AAA, abdominal aortic aneurysm; ACS, acute coronary syndrome; AD, aortic dissection; ARDS, acute respiratory distress syndrome; BLUE, bedside lung ultrasound in emergency; COPD, chronic obstructive pulmonary disease; EF, ejection fraction; HF, heart failure; ILD, interstitial lung disease; IVC, inferior vena cava; LV, left ventricle; PLAPS, posterolateral alveolar/or pleural syndrome; RV, right ventricle; SEARCH, sonographic evaluation of aetiology for respiratory difficulty, chest pain, and/or hypotension; WMA, wall motion abnormality.