Acute Purulent Inflammatory Diseases

Pyogenic bacterial diseases are among the most common infections of the CNS. The nervous system may be infected in any of the following ways:

• By hematogenous spread during septicemia from a distant infection; common sources are lung abscesses, bronchiectasis, subacute bacterial endocarditis, osteomyelitis, and pelvic infections

• By direct spread from sinusitis, mastoiditis, otitis media, and dental abscesses

• By penetrating traumatic skull injuries

• By diagnostic (lumbar and ventricular puncture) and neurosurgical procedures (ventriculoperitoneal shunt)

• In neonates, by amniotic fluid or from the maternal genital tract during parturition

• In fetuses, by transplacental transmission.

Two major purulent inflammations are leptomeningitis and cerebral abscess.

0 0

Post a comment