Silverman index is a score to assess, in the premature infant, the severity of respiratory distress syndrome.
It is most often due to a lack of surfactant (liquid lining the inner surface of alveoli.)
Silverman index depends on several parameters:
- Balancing thoraco-abdominal inspiration: mobilization of the thorax and abdomen.
- Indrawing depression abnormal chest wall, visible up to the intercostal spaces (circulation under sternum) during heavy breaths.
- This draw may also be visible above the sternum (sternal random addition). This phenomenon occurs when the entry of air into the lungs is obstructed by a mechanical obstacle.
- Funnel xiphoid.
- Flapping wings of the nose.