Lecture 6 Staph, Strep, Bacilli (E2) Flashcards
What does the term Erythema (or Erythematous) mean?
The term ‘erythema’ simply means ‘red’
What is a papule?
A small, raised area of skin (<5 mm). Usually with a domed top (although it can be flat)
What is a vesicle?
A papule with a fluid filled center. (eg chickenpox rash and ‘cold sores’
What is a macule?
A small, flat area (or ‘spot’) of discolored skin (usually <5 mm in diameter)
What is a Maculopapular?
A combination of small flat ‘spots’ and raised ‘spots’ on the skin (eg measles)
What is a pustule?
A vesicle containing yellow fluid. This fluid usually consists of serum (blood fluid), white blood cells, and the virus that. has caused the original infection. The presence of a pustule does not mean that the rash has ‘become infected’ with bacteria; pustules are an ‘expected’ event in many viral illnesses
What is a nodule?
A larger swelling on the skin surface (usually >5 mm in diameter). It extends deep into skin and is usually firm to the touch
Purpura
Areas of little petechiae joined together. These are therefore larger areas (usually >2 mm) of bleeding under the skin
What is petechiae?
Are small, red brown, flat macules up to 2mm in diameter. They do not blanch (turn white) when pressure is applied with a finger– in contrast to most rashses in children which do fade when pressure is applied. Petechiae are caused by tiny spots of blood gathered under the surface of the skin. They are important in diagnosing meningococcal disease and other conditions
What does DIVIRDEPT mean?
DISEASE presentation in the patient and the differential diagnosis?
IDENTIFY the microbial cause of disease?
VIRULENCE properties of the organism that cause disease?
IMMUNE response to infection.
REPLICATION conditions (where, metabolic needs)
DISEASE characteristics and consequences
EPIDEMIOLOGY of infection
PREVENTION of disease/infection
TREATMENT of disease/infection
Staphylococcus spp.
