ORAL SURG Odontogenic Infections Flashcards
What are the systemic features of a spreading odontogenic infection?
Increased temperature, hypotension, increased pulse rate, increased heart rate, increased respiratory rate, decreased urine output, increased WBC count
What is pus?
avascular soup of debris and dead micrboes
What is an abscess?
Collection of pus within a cavity, formed by the disintegration of tissue
What is cellulitis?
Diffuse swelling of inflammatory exudate within soft tissue
What are features of an abscess?
Localized, well-circumscribed, pus present and fluctuant
What are features of celulitis?
Aggressive, doughy feel, no pus, painful
What can be the causes of odontogenic infections?
- Caries/PA infection
- Perio
- Pericoronitis
Trauma (fractured md, bacteria tracks thru fracture and collects under periosteum) - Post op infections
- Pathology
- Tumours
What are factors that influence the course of infection?
Determinants of bacterial pathology
Patient factors (age, immunocompromised, pt health status)
Local anatomy and blood supply.
An early, rapidly spreading cellulitis is caused by __?
Aerobic bacteria
Chronic abscess are caused by___?
Anaerobic bacteria
What are examples of immunocompromise?
Uncontrolled metabolic disoders:
- Uncontrolled diabetes
- Malnutrition
- Alcoholism
- Chronic renal failure
- Uraemia
Suppressing drugs:
- Cancer durgs
- Immunosuppresive agents
Suppressing diseases:
- Leukaemia,
- Lymphoma
- Malgnant tumours
- HIV/AIDS
- TB
What are systemic signs of infection?
↓ BP
↑ HR
↑ PR
↑ Temperature
↑ WBC
↓ Urine output
What are E/O signs of odontogenic infection?
Trismus, facial swelling, warmth, erythema, dysphagia, lymphadenopathy, airway involvement
What are signs of airway involvement?
Drooling, gasping for air, tongue enlargement, reduced tongue mobility, uvula depressed/deviated.
What are I/O signs of odontogenic infection?
Caries, draining sinus, pain, mobility, perio, swelling, trauma, post op wounds.
When should you consider a hospital administration?
Systemic features of fever, airway involvement, dehydration, infection in moderate to severe risk spaces, need for GA, need for inpatient control of systemic disease
What is the best radiography modality for odontogenic infections?
CT is the golden standard
What are the management stategies for odontogenic infection?
- Remove the source of infection (ie, carious tooth)
- Incise and drain
- AB treatment
3
