Broadbent sign was described by Sir John Broadbent in Adherent Pericardium, London, 1895 . There is marked systolic retraction of left ribs 11 and 12 (floating ribs) on the posterior and lateral aspect of the chest. It may appear as a systolic pulsation, but close scrutiny reveals that it is a systolic retraction followed by a sharp rebound during diastole. It is due to adhesion of the pericardium to the diaphragm and part of the thoracic wall. Broadbent sign was described in constrictive pericarditis.
- Paterson AR. Case in Which “Broadbent’s Sign” Was Present, Though No Pericardial Adhesions Existed. Glasgow Med J. 1911 Jul;76(1):24-27.