Cerebrospinal fluid rhinorrhea

Cerebrospinal fluid nasal leakage refers to the rupture or defect of the bone plate and meninges at the base of the skull in the nasal cavity, nasal congestion, etc., so that direct communication between the skull and nose causes the cerebrospinal fluid to leak from the nose and can cause repeated attacks of meningitis. Among various causes of cerebrospinal fluid nasal slippery, traumatic injuries are the most common, of which about 80% are caused by trauma and surgery. The ethmoid ethmoid plate and the posterior frontal sinus bone plate are very thin and closely connected to the dura mater. If the osteome ruptures at the same time as the dura mater, cerebrospinal rhinorrhea occurs. Fractures of the middle cranial fossa can damage the upper wall of the larger sphenoid sinus and cause cerebrospinal fluid rhinorrhea. Cerebrospinal fluid leakage caused by a fracture of the middle ear mastoid canopy or eustachian tube bone can flow through the eustachian tube to the nasal cavity, which is called cerebrospinal fluid nasal leakage. Cerebrospinal fluid nasal leakage caused by ethmoid ethmoid plate fracture is the highest. Cerebrospinal fluid nasal leakage can occur at the moment of injury, or it can occur after a period of incubation after the injury; the latter is called late, which may be because the bone plate is broken and the dura mater is intact at the time of injury. The dura mater gradually hernias into the fracture fissure, and the dura mater fibers are disconnected over time, forming small holes, and cerebrospinal fluid rhinorrhea occurs. Another reason is that the blood clot temporarily closed the dura mater and lamina rupture when injured, and the blood clot breaks down and the cerebrospinal fluid leaks. Or due to a blood clot, the dura mater and the lamina rupture are temporarily closed when the blood clot breaks down, and the blood clot breaks down and the cerebrospinal fluid flows to the nasal cavity.