What is purulent meningitis?
1. Introduction. Purulent meningitis refers to inflammation of leptomeninges occurring along with infection of the subarachnoid space by various purulent bacteria. Clinically, purulent meningitis usually manifests as fever, vomiting, headache, and meningeal irritation.
What causes purulent meningitis?
Several strains of bacteria can cause acute bacterial meningitis, most commonly: Streptococcus pneumoniae (pneumococcus). This bacterium is the most common cause of bacterial meningitis in infants, young children and adults in the United States. It more commonly causes pneumonia or ear or sinus infections.
What are the 2 types of meningitis?
Viral meningitis is the most common type of meningitis, followed by bacterial meningitis. Rarer types of meningitis include chemical and fungal meningitis. The most common types of bacterial meningitis are meningococcal, pneumococcal, TB, group B streptococcal and E. coli.
What are 3 types of meninges?
meninges, singular meninx, three membranous envelopes—pia mater, arachnoid, and dura mater—that surround the brain and spinal cord. Cerebrospinal fluid fills the ventricles of the brain and the space between the pia mater and the arachnoid.
What is meningitis Slideshare?
Meningitis is defined as an acute inflammation of the pia mater and the arachnoid membrane surrounding the brain and spinal cord. 3. Bacterial infections are the most common cause of meningitis, followed by bacterial infections and, rarely, fungal infections.
What are the five types of meningitis?
There are actually five types of meningitis — bacterial, viral, parasitic, fungal, and non-infectious — each classified by the cause of the disease.
Which type of meningitis is most common?
Viral meningitis (when meningitis is caused by a virus) is the most common type of meningitis. Most people get better on their own without treatment.
What are the four classifications of meningitis?
Types of meningitis
- Viral meningitis. Viral meningitis is the most common type of meningitis.
- Bacterial meningitis. Bacterial meningitis is contagious and caused by infection from certain bacteria.
- Fungal meningitis. Fungal meningitis is a rare type of meningitis.
- Parasitic meningitis.
- Non-infectious meningitis.
Why is the second layer of meninges called arachnoid mater?
The arachnoid mater, named for its spiderweb-like appearance, is a thin, transparent membrane surrounding the spinal cord like a loosely fitting sac.
What are the 3 meningeal layers?
Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.
What are the signs and symptoms of purulent meningitis?
Symptoms of purulent meningitis. The incubation period of purulent meningitis is from 2 to 12 days. Then within 1-3 days develops acute nasopharyngitis with a high body temperature (up to 39-40.5 ° C), chills, intense headache, gradually intensifying and accompanied by nausea and vomiting. Pathognomonic signs of meningitis appear after 12-24 hours.
What is the microbiology of acute pyogenic meningitis?
Microbiology of Acute Pyogenic Meningitis – Definition Pyogenic meningitis is an inflammation of the meninges affecting Pia, Arachnoid and subarachnoid space. A serious infection ,associated with marked Definition Pyogenic meningitis is an inflammation of the meninges affecting Pia, Arachnoid and subarachnoid space.
Which is the main reservoir for Japanese encephalitis?
JAPANESE ENCEPHALITIS – (other viral meningitis or encephalitis, Enzootic or zoonoses disease Amplifying hosts Pigs (the main reservoir) Wading birds (egrets, herons), | PowerPoint PPT presentation | free to view
How to tell if an infant has meningitis?
9. – The infant with meningitis has signs of infection but commonly is `simply fretful and refuses food’. • Vomiting occurs early in the disease and is often repeated,………. dehydration that may prevent the full fontanelle as associated with increased intracranial pressure.