4] Infection Control Flashcards
Micro-organisms that survive on the skin
Normal flora
How do normal flora serve a protective function?
By stopping the growth of more virulent micro-organisms
2 ways infections occur
Breach of intact skin or systemic infection
6 ways intact skin gets breached
Microscopic Surgery Trauma Lacerations Burns Pressure ulcers
2 ways for systemic infections
Blood borne
Sepsis
10 factors that influence liklihood of an infection
Necrosis/slough Perfusion Size of wound Duration of wound Smoking Drug and alcohol use Poor nutrition Lack of sleep and exercise Comorbidities Immunosuppression
Presence of bacteria on wound surfaces with no multiplication of bacteria
Contamination
All wounds are ???
Contaminated
Multiplication of micro-organisms on the
wound surface without invasion of wound tissue and no host immune response
Colonization
Presence of proliferating bacteria on the
wound surface where healing is delayed or stopped and subtle clinical signs of host
injury are noted
Critical colonization
Invasion and multiplication of micro-
organisms in wound tissue resulting in
pathophysiologic effects or tissue injury
Infection
7 signs of critical colonization
Discoloration of granulation tissue Friable granulation tissue Pocketing in wound base Wound breakdown Bad odor High serous exudate levels Delayed healing
Acute indicators of infected wounds
Pain Redness Edema Heat Pus
serous drainage with concurrent inflammation,
discoloration of granulation tissue, friable granulation tissue, foul odor, wound
breakdown is what type of wound?
Chronic wound
Diabetic indicator of infected wound
Pus or 2+ signs of inflammation
Surgical site infection indicator
Pus or signs of inflammation and a + culture
What’s an indicator of an infected wound in an immunosuppressed pt?
Pain
Population of community of bacterial living in organized structures at a liquid interface
Biofilm
Biofilm provides ?
Physical protection to bacteria
Biofilm is present in 70-80% of ?
Chronic wounds
Biofilm bacteria is attached to?
Tissue surfaces
Biofilm looks?
Cloudy, slimy
Biofilm interferes with?
Epithelialization
Treatment for biofilm
Debridement or apply nontoxic antiseptic solution daily
What are 4 issues with biofilm?
No validated clinical characteristics
No routine test
Depth for debridement unknown
Inadequate prevention
What’s the acronym for a superficial infection
NERDS
What does NERDS stand for
Non healing wounds Exudate Red and bleeding wound surface granulation tissue Debris (yellow/black) on wound surface Smell (bad odor)
What’s the acronym for deep infection?
STONES
What does STONES stand for?
Size bigger Temperature increased Os (exposed bone) New wound breakdown Exudate, erythema, edema Smell/odor
Superficial wound infection Dx occurs
Within 30 days post op