ID Flashcards
Treatment regime in Isoniazod-resistant TB
2 months of RIPE
Then further 4 months of Rifampicin and Ethambutol (in place of RI)
Features of Strongyloides stercoralis infection (nematode worm)
Diarrhoea + abdo pain + bloating
Linear itchy rash (larva currens)
Pneumonitis if larvae migrate to lungs
Treatment of Strongyloidiasis
Ivermectin/albendazole
Features of Strongyloides Hyperinfection Syndrome (proliferation of larvae in immunosuppression)
Paralytic ileus
Sepsis due to gut bacteria translocation
Pulmonary infitrates
Suspect Lyme disease - erythema migrans is present
Treat: Doxycyline 14 - 21 days
Suspect Lyme disease - no erythema migrans.
ELISA for Borrelia burgdorferi antibodies
Suspect Lyme disease - (no erythema migrans) - Borrelia ELISA serology negative at <4wk since symptom onset
Repeat ELISA in 4-6wk
Suspect Lyme disease - (no erythema migrans) - Borrelia serology negative at >12wk since symptom onset
Immunoblot
Suspect Lyme disease - (no erythema migrans) - Borrelia ELISA positive
Immunoblot test
Suspect Lyme disease - (no erythema migrans) - Borrelia serology equivocal
Immunoblot
Management of early Lyme disease - in pregnancy
Amoxicillin (doxycycline CI in pregnancy)
Management of disseminated Lyme disease - in pregnancy
Ceftriaxone
Monitoring of HIV
Viral load every 6m
CD4 count annually
Clostridium botulinum - bacterial identification
Gram positive anaerobic bacillus
Management of botulism
Botulism antitoxin (if early) Supportive care
Features of leprosy
Hypopigmented patches
Anaesthetic nodules
May be symmetrical or asymmetrical nerve involvement
Alopecia
Diagnosis of leprosy
Skin biopsy
Management of leprosy
Triple therapy:
Rifampicin + dapsone + clofazimine
Features of Mycoplasma pneumonia
Dry cough Prolonged flu-like Erythema multiforme Hyponatraemia Haemolytic anaemia (cold agglutinins)
Treatment of latent TB (asymptomatic TB, positive blood test, no imaging findings)
Dual therapy, either:
3 months of Isoniazid (+Pyridoxine) + Rifampicin
or
6 months of Isoniazid (+Pyridoxine)
Which drugs risk re-activation of TB
TNF inhibitors:
Etanercept
Infliximab
Tests used to diagnose latent TB
Quantiferon (IFN-g release assay)
Mantoux
Features of Dengue fever
Fever Severe bone/muscle aches Retro-orbital headache Maculopapular rash Low WCC, low PLT Haemorrhagic phase
Treatment of Dengue fever
Supportive
Features of Scrub typhus
Fever + muscle pain
Eschar at mite entry site
Features of Typhoid fever
Relative bradycardia
Abdo pain
Rose spots
Reactive athritis
Features of Chikungunya fever
Severe joint pain + swelling
High fevers
Lymphopenia
Thrombocytopenia
Ross River Virus - endemic in
Australia
Chikungunya fever - endemic in
Africa
Asia
Caribbean
Treatment for schistosomiasis
Praziquantel
Treatment for giardiasis
1 week Metronidazole
or
3g Tinidazole stat
Cryptococcus meningitis (fungal) - CSF findings
Raised opening pressure
Lymphocytosis
High protein
Low glucose
Management of Cryptococcus meningitis
Amphotericin B
Treatment for amoebic liver abscess
Metronidazole
Treatment of fungal liver abscesses
Amphotericin B
Treatment for intestinal amoeba (after treated the liver abscess)
Diloxanide furoate
Antibiotic for Legionnaire’s disease
Macrolide (clarithromycin/erythromycin) or quinolone (levofloxacin)
Antibiotic treatment of Listeria meningitis
IV amoxicillin/ampicillin + gentamicin
Antibiotic treatment of tetanus wound (after debridement and tetanus globulin)
Metronidazole IV
1st line management of Brucellosis
Oral doxycycline + rifampicin
Management of Brucellosis with neurological involvement
IV Ceftriaxone + doxycycline + rifampicin
Management of brucellosis with endocarditis
Gentamicin + doxycycline + rifampicin