Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ORD Exam 2 > Bacterial Infections of the Skin > Flashcards

Bacterial Infections of the Skin Flashcards

1
Q

Superficial Cutaneous Infections:

A
  • Erythrasma
  • Pitted Keratolysis
  • Intertriginous Infections
  • Cellulitis
  • Erysipelas
  • Necrotizing Fasciitis
  • Lymphagitis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Erythrasma:

A
  • Corynebacterium minutissimum
  • Toes, groin, axilla
  • Mimics fungal
  • Wood’s Lamp shows Coral-Red fluorescence
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Pitted Keratolysis:

A
  • Micrococcus sedentarius

- Keratinase released destroying keratin on feet showing pits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Intertrigio:

A
  • Non-specific inflammation of apposed skin
  • More common in obese people
  • Wood’s Lamp and KOH helpful to distinguish fungal vs bacterial
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Cellulitis:

A
  • Staphylococcus aureus or Group A Strep
  • Deep Dermis and Subcutaneous Fat
  • Need to R/O DVT if on leg
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Erysipelas:

A
  • Group A strep
  • Variant of Cellulitis
  • Affects Upper Dermis and Superficial Lymphatics
  • Lymphatic involvement makes it different from cellulitis
  • Legs and face
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Periorbital Cellulitis:

A
  • 3x more common than orbital cellulitis
  • Limited to eyelid and pre-septal region
  • Maintain eye movement
  • Staph or Strep in adults
  • H. influenza in children
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Orbital Cellulitis:

A
  • Emergency Diagnosis
  • Involves muscles and fat of orbit but not eye itself
  • Loss of eye movement due to inflamed muscle
  • Associated with ethmoid and maxillary sinus infections
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Acute Lymphangitis:

A
  • Inflammatory process involving the subcutaneous lymphatic channels
  • Group A strep
  • Starts from wound and red line moves from there proximally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Pyodermas:

A
  • Impetigo (Bullous and Non-Bullous)

- Acne

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Bullous Impetigo:

A
  • Staphylococcus aureus or Group A Beta-Hemolytic Strep
  • Exotoxin
  • More common in infants and on the face
  • Vesicles enlarge to form bullae, bullae collapse and form honey colored crust
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Non-bullous Impetigo:

A
  • More common form
  • Small vesicles rupture to form red moist base
  • Nose mouth limbs
  • Satellite lesions will be present
  • Acute poststreptococcal glomerulonephritis association
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Dermal Layer Infections:

A
  • Ecthyma
  • Folliculitis
  • Furuncle
  • Carbuncle
  • Hidradenitis Suppurativa
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Ecthyma:

A
  • Ulcerative form of impetigo
  • Same as impetigo except bacteria penetrate to dermal lay leaving a scar
  • Distal extremities
  • Can be viral from goat or sheep
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Folliculitis:

A
  • Staphylococcus aureus infection of hair follicles
  • Pustular lesion
  • Hot Tub folliculitis -> Pseudomonas aeruginosa
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Hidradenitis Suppurativa:

A
  • Chronic infection of apocrine sweat glands due to Staph aureus
  • Groin and axilla most common
  • Leads to abscess formation and scarring
17
Q

Acnes:

A
  • Acne Vulgaris
  • Acne Conglobata
  • Acne Fulminans
18
Q

Acne Vulgaris:

A
  • Chronic inflammatory disease of pilosebaceous follicles
  • Propionibacterium acnes
  • Risk for acne increases only in females that have an increased BMI
  • Normal acne
19
Q

Acne Conglobata:

A
  • Severe form of nodular acne
  • Burrowing and interconnecting abscesses and irregular scars
  • Back chest buttocks
  • No Systemic Symptoms
20
Q

Acne Fulminans:

A
  • Rare severe form of conglobata with systemic symptoms

- Systemic Symptoms -> Fever and Arthralgia

21
Q

Cat bite:

A

Paturella multocida

22
Q

Gram Positive Infections due to Toxin Production:

A
  • Staphylococcal Scalded Skin Syndrome
  • Toxic Shock Syndrome
  • Scarlet Fever
23
Q

Scaled Skin Syndrome/Ritter’s Disease:

A
  • Exfoliative exotoxin of S. aureus
  • Children and neonates
  • Sandpaper skin rash
  • Positive Nikolsky Sign
24
Q

Toxic Shock Syndrome:

A
  • Multisystem illness
  • Exotoxin of Staphylococcus aureus
  • Major release of cytokines
  • Fever, rash, hypotension, tissue injury and shock
25
Q

Scarlet Fever/Scarlatina:

A
  • Exotoxin from Group A strep
  • Rash begins from face neck upper chest and moves distally
  • Scarlet erythema and sand paper texture
  • Blanches under pressure
  • STRAWBERRY TONGUE
26
Q

Gram Negative Infections:

A
  • Bartonella infections
    • Cat-Scratch Disease
    • Bacterial angiomatosis
    • Trench Fever
  • Tularemia
  • Meningococcemia
27
Q

Cat Scratch Disease:

A
  • Bartonella henselae
  • Vesicles at site of wound
  • Regional lymphadenopathy
28
Q

Bacillary Angiomatosis:

A
  • Bartonella henselae
  • Vascular proliferation
  • Same as cat scratch but in an IMMUNOCOMPROMISED PATIENT
  • The lesions bleed profusely
29
Q

Trench Fever:

A
  • Bartonella quintana

- Fever, arthralgia, splenomegaly, HA, Truncal rash

30
Q

Tularemia:

A
  • Francisella tularensis
  • Spread by small mammals
  • Fever, anorexia, abdominal pain, rash -> multiple presentation of rash
  • Skin ulcers
31
Q

Meningococcemia:

A
  • Neisseria meningitides
  • MIXED PETECHIAL AND MACULO-PAPULAR RASH MOST PREVALENT ON EXTREMITIES AND EXTENSOR SURFACES (PATHOGNOMONIC)
  • Must diagnosis early
32
Q

Mycobacterium marinum:

A
  • Non-chlorinated water
  • Occurs at site of minor trauma
  • Papule that develops into ulcers
33
Q

Mycobacterium ulcerans:

A
  • Occurs at the site of inoculation
  • Legs most commonly
  • Contaminated water
34
Q

Mycobacterium abscessus and Mycobacterium fortuitum:

A
  • Water soil dust
  • High resistance to antibiotics
  • Abscesses
  • Associated with renal transplant, post-surgical wounds, needle injections
35
Q

Mycobacterium leprae:

A
  • Chronic granulomatous disease
  • Hypopigmentation with loss of sensation
  • Thickened peripheral nerves

ORD Exam 2 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions