A medical document discusses hypoxia following a road traffic accident. It describes four types of pulmonary contusion caused by direct chest compression, shearing against vertebral bodies, fractured ribs directly injuring the lung, or tearing of lung parenchyma due to prior adhesions. The document also mentions management of pulmonary contusion.

1. An interesting case of hypoxia
following RTA
Department of
Pulmonary Medicine- Orthopedics- Radiology
DM WIMS Medical College

11. PULMONARY CONTUSION

16. Potential causes and types
Types Causes
Type 1 Due to direct chest wall compression against
lung parenchyma. This accounts for majority of
cases.
Type 2 Due to shearing of lung tissue against vertebral
bodies.
Type 3 Localized lesions due to fractured ribs which
directly injures the underlying lung.
Type 4 Due to underlying pleuro-pulmonary adhesions
due to prior injury tearing the lung parenchyma.

17. MANAGEMENT