Pseudomonal infxns Flashcards
Pseudomonas folliculitis onset
8hr to 5 days post exposure in moist environment like hot tub
Pseudomonas folliculitis Clinical presentation
Multiple round urticarial plaques with central papule/pustule often in areas under the bathing suit
Clears in 7-10 days leaving red-brown post inflammatory hyperpigmentation
Pseudomonas folliculitis treatment
can use white vinegar compresses or Silvadiene
Pseudomonas cellulitis
Severe pain, blue-green purulent debris, fruity/mousey odor
Otitis externa
Mild inflammation of the external auditory canal
Can be caused by pseudomonas or staph
Treatment of external otitis
Regardless of etiology (even bacterial), can give betamethasone diproprionate ear drops
- if progresses beyond canal to the pinna and surrounding tissues: Cipro
Malignant external otitis
Associated with pseudomonas in DMII
- is an osteomyelitis of the skull base (can involve CNVII)
Tx of Malignant external otitis
3rd generation cephalosporin and a flurorquinolone (double coverage)
Pseudomonal toe web infection clinical presentation
Soggy wetness of toe webs and adjacent skin +/- denuding skin
Pseudomonal toe web infection tx
Debride dead skin, Dry out skin with white vinegar or silver nitrate and then topical gentamicin/silver sulfadiazine/Castellani’s paint
Ecthyma gangrenosum etiology
Cutaneous manifestation of pseudomonas septicemia in immunosuppressed (neutropenic) pts
Ecthyma gangrenosum clinical presentation
Multiple, noncontiguous ulcers or a solitary ulcer (start as isolated red/purpuric macules that become vesicular then indurated, then bullous/pustular)
Central area becomes hemorrhagic and necrotic and then sloughs to form ulcer with gray-black eschar and an erythematous halo
MC sites are gluteal or perineal regions
