Microbiology 🦠 Flashcards
what is the definition of osteomyelitis?
Osteomyelitis means an infection of bone, which can either be acute or chronic
what are the mode of infection by osteomyelitis?
- The bloodstream Direct invasion (via open fractures, surgery, or objects that pierce the bone)
- Infections in nearby structures, such as natural or artificial joints or soft tissues
what are the causes of osteomyelitis in newborns younger than four months?
- S. aureus
- Enterobacter species
- group A and B Streptococcus species
what are the causes of osteomyelitis in children aged between four months and four years?
- S. aureus
- group A Streptococcus species
- Haemophilus influenzae
- Enterobacter species
what Are the causes of osteomyelitis any children or adolscents aged more than 4 years?
- S. aureus (80%)
- group A Streptococcus species
- H. influenzae
- Enterobacter species
what are the causes of osteomyelitis in adults?
- S. aureus
- occasionally Enterobacter or Streptococcus species
what is the cause of osteomyelitis in sickle cell anemia Patients?
Salmonella species are most common in patients with sickle cell disease
what are the most commonly isolated bacterium from old cases of osteomyelitis?
Staph aureus
what are the fungal causes of osteomyelitis?
The two most common are Blastomyces dermatitidis and Coccidioides immitis
what is the cause of osteomyelitis in intravenous drug users and splenectomized patients?
Gram-Negative bacteria, including enteric bacteria, are significant pathogens
what are the risk factors of Osteomyelitis?
what is the clinical picture of osteomyelitis?
what are the complications of Osteomyelitis?
- Bone abscess (pocket of pus)
- Bone necrosis (bone death)
- Spread of infection
- Inflammation of soft tissue (cellulitis)
- Blood poisoning (septicaemia)
- Chronic infection
what is the mode of infection with acute osteomyelitis?
what age does acute osteomyelitis affect?
what characterizes chronic osteomyelitis?
what is the most affected sites in acute osteomyelitis?
what causes chronic osteomyelitis?
which microbe causes chronic osteomyelitis?
what is the relation between Tuberculosis and Osteomyelitis?
morphology of Staph aureus
culture of Staph aureus
Laboratory diagnosis of Staph aureus
how is osteomyelitis treated?
what is the definition of Skin and soft tissue infections (SSTIs)?
classification of SSTIs
what are the Causative organisms of SSTIs?
what is the mode of transmission of SSTIs?
pathogenesis of SSTIs
what is the clinical picture of SSTIs?
diagnosis of SSTIs
what is the most common organism causing SSTIs?
morphology of clostridium perfringens
culture of clostridium perfringens
Laboratory diagnosis of clostridium perfringens
treatment of clostridium perfringens
