Where to observe for Broadbent’s Sign?
- Retraction of the thoracic wall is synchronous with cardiac systole
- Retraction is visible in the left posterior axillary line.
- 11th and 12th ribs are indrawn, with narrowing of the intercostal space posteriorly
- There is marked systolic retraction of left ribs 11 and 12 (floating ribs) on the posterior and lateral aspect of the chest.
What are the phases of Broadbent’s Sign?
- Systolic retraction followed by a sharp rebound during diastole.
What is the mechanism of Broadbent’s Sign?
- Seen in case adhesive pericarditis.- adhesion of the pericardium to the diaphragm and part of the thoracic wall.