Infectious Diseases Flashcards
Septic Shock
- Definition
Septic Shock
- A subset of sepsis
- Profound abnormalities
- Circulatory
- Cellular
- Metabolic - Associated with greater risk of mortality
Soft tissue ABx
1 Staph aureus
- MRSA
- Strep
4 Penicillin allergy
Soft Tissue ABx
1 Staph aureus
- Fluclox
- MRSA
- Glycopeptide
(Vanc/teic) - Strep
- Benpen/Fluclox - Pen allergic
- Doxy
- Mero (1% risk)
- Ceftriax (10% risk)
MSK ABx
- Diabetic foot
- TB
MSK ABx
- Diabetic foot
- Tazocin (broad pen)
- Carbapenem - TB
RIPE
(pyrazinamide)
Resp ABx
- Strep p.
- Hib
- Atypical
- Viral
Resp ABx
- Strep p.
- Amoxicillin (pen)
- Erythro/clari (macro) - Hib
- Co-amox - Atypical
- Doxy
- Levoflox (FQ) - Viral
- Oseltamivir
GI ABx
- Viral V+D
- Enterobac
- Camp, shigell, EC - Salmonella spp.
- C. diff
- Visceral/peritontis
- Anaerobic cover
- Severe/pen allergic
GI ABx
- Viral V+D
- None - Enterobacteria
- None
- Cipro (FQ)
- Clari/azith (mac) - Salmonella
- Ceft/azith - C. Dif
- PO Met/Vanc - Visceral/peritonitis
- Co-amox
- Cipro
- Gent (aminoglyc) - Anaerobic
- Met/Co-amox - Severe/pen allergy
- Carbapenem
GU ABx
- Mild enterobac
- Moderate enterobac
- Pseudomonas
- ESBL/resistant
- Ext. spec. beta-lactamase - N. gonorrhoea
- Chlamydia trach.
GU Abx
- Mild enterobac
- PO Nitro, trimeth, co-amox - Mod/severe enterobac
- IV Co-amox
- PO Cipro - Pseudomonas
- Cipro; gent; tazocin - ESBL
- Carbapenem - N. gonorrhoea
- IM/IV ceft - C. trachomatis
- Azithromycin
CNS ABx
- Strep, N. menigitidis, Hib
- Listeria
- Pen allergic
- TB
- Herpes encephalitis
CNS ABx
- Strep
- IV Ceft/cefotaxime - Listeria
- IV amoxicillin - Pen allergic
- Mero - TB
- RIPE - Herpes encepharlitis
- IV Aciclovir
Endocarditis ABx
- Strep
- Enterococcie
E. faecalis, facium - Staph a
- “Culture negative”
- MRSA
- Or pen allergic
Endocarditis ABx
- Strep
- Benpen +/-gent - Entero
- Amoxicillin +/- gent - Staph a
- Fluclox +/- gent +/- rifamp - “Culture negative”
- Ceftriaxone - MRSA/pen allergic
- Vancomycin
Line infection: ABx
- As for skin
- MRSA
Line infection
- As for skin
- MRSA
- Vancomycin
Hospital-acquired: ABx
- Enterobac
- Pseudomonas
- C. diff
- MDR
Hospital acquired
- Enterobac
- Co-amox - Pseudomonas spp.
- Cipro
- Gent - C. diff
- Met
- Vanc - MDR
- Tazocin
- Carbapenem
Sepsis: ABx
- Undifferentiated infx
Non-specific Sepsis ABx
- Meropenem (Stat)
- Trust guidelines
- Investigate
Travel infection
- Six questions
Travel infection Hx
- Region
- Dates and onset
- Living situation abroad
- Activities
- Animals (bites/ticks)
- Freshwater (schistosomiasis)
- Wells (leptospirosis) - Food and water
- Sexual history
Travel infection
- PMHx/DHx
Travel infection: PM + D Hx
- Predisposition
- DM
- Immunosuppresive - Vaccination
- Hep A, B
- Typhoid
- Tetanus - Malaria prophylaxis
Traveller infection
- Six maculopapular rashes
Maculopapular rash
- Dengue fever
- Leptospirosis
- Rickettsia
- Mono (EBV/CMV)
- Childhood (Rubella, parvo)
- HIV
Traveller infection
- Rose spots?
2-3mm macules
Traveller infection
Typhoid fever
- 2-3mm rose macules
- Chest or abdomen
Traveller infection
- Black necrotic ulcer
- Erythematous margins
Traveller infection
Rickettsia
- Black necrotic ulcer
- Erythematous margins
Traveller infection
- Petechiae
- Ecchymoses
- Haemorrhagic lesions
Traveler ecchymoses
- Dengue fever
- Meningococcemia
- Viral hemorrhagic fever
- Dengue
- Yellow fever
- Ebola
- Crimean Congo
Traveller infection
- Conjunctival suffusion
Traveller infection
Leptospirosis
- Conjunctival suffusion
Traveller infection
- Five Splenomegalies
Traveller’s splenomegaly
- Mono
- Malaria
- Visceral leishmaniasis
- Sand fly parasite
4.. Typhoid
- Brucellosis
- Unpasteurised dairy
Traveller infection
- Meningo-encephalitis Sx
Meningo-encephalitis sx
- Fever
- Altered mental status
Traveller infection
Meningo-encephalitises
Meningo-encephalitis
- Cerebral malaria
- Japanese encephalitis
- West Nile Virus encephalitis
- Common
- N. meningitis
- Strep. p
- HSV
Malaria
- Presentation
Malaria S&S
(90% africa, 10% SE asia)
- Abrupt onset rigors
- High fevers & malaise
- Severe headache and myalgia
- Vague abdo pain
- N&V (&D)
- Hepatosplenomegaly
- Jaundice
Malaria
- Four Blood results
Malaria bloods
- Anaemia
- Thrombocytopenia
- Leukopenia
- LFT derangement
Malaria
- Four complications
Malaria complications
- Hypoglycaemia
- Renal failure
- Pulmonary oedema
- Neurologic deterioration
Malaria
- Treatment
Malaria Mx
- Chloroquine
- Hydroxychloroquine - Resistance
- Quinine + Doxy
- Artesunate+melfloquine - Primaquine
- Parenteral if no PO
- IV Artesunate - Intensive care
Typhoid
- 8 S&S
Typhoid
SE Asia, C/S America
- 30-50% Rose Spots
- Fever and malaise
- Anorexia
- Vague abdo pain
- Constipation or diarrhoea
- Dry cough
- Hepatosplenomegaly
- Faget’s sign
- Pulse-temp dissociation
Typhoid
- Blood changes
Typhoid Bloods
- Leucopenia
- Lymphopenia
- CRP raised
Typhoid
- Mx
Typhoid
- IV Ceftriaxone
- Switch if sensitive
- PO Cipro
- PO Azithro
PUO on IDU
- Definition
Pyrexia of Unknown Origin
- Temp>38
- Illness > weeks
- 7+days no DDx
PUO
- Differentials
Unknown origin pyrexia DDx
- Infection
- TB
- IE
- Abscesses - Autoimmune
- Adult Still’s
- Temporal arteritis
- Wegener’s - Neoplastic
- Leukaemia/lymphoma
- RCC - Other
- Drugs
- TE
- Thyroid/adrenal
PUO
- Approach
PUO approach
- DDx
- No ABx until Ix
- Consult rheum+haem
- Front sheet of Ix
- Outpatient if stable
Latent TB
- Ix
Latent TB Screen
- CXR
- Interferon gamma
(T cell release of interferon gamma on exposure)
- quantiFERON
- T-SPot
Latent TB
- Mx
Latent TB Mx
- 3 months R+I
Or
- 6 months R
Active TB
- Imaging
Active TB Imaging
1 CXR
- Mediastinal lymphadenopathy
- Cavitating pneumonia
- Pleural effusion
- CT
- Lymphadenopathy
- Visceral lesions - MRI
- Leptomeningeal enhacement
Active TB
- Culture acquisition
Active TB Cultures
6 Weeks Zeihl Neelson
- Pulmonary
- Sputum
- Bronchoscopy
- EBUS (endobronchial) - Meningeal
- LP and PCR - Lymph Node
- Core biopsy (not fna) - Pericardial
- Pericardiocentesis - Gastrointestinal
- Colonoscopy and biopsy
- US Omentum biopsy
TB
- Paradoxical reaction
- Mx
TB Paradox
- Inflammation as bacteria die at start of treatment
- Steroids if problematic
- Meningeal
- Spinal
- Pericardial
TB
- MDR Mx
MDR TB
- Negative pressure room
- Sensitivity based
TB
- ABx Regimen
TB ABx
- Intensive 2 months
- RIPE
- Pyridoxine (Vit B) - Continuation phase
- PI
- Pryridoxine
STI
- NAATs on the ward
STIs
- NAATs for
- Gonorrhoea (GC)
- Chlamydia (CT) - Male first-pass urine
- Vulvo-vaginal swab
- Pharyngeal or rectal swab
HIV
- Baseline investigations
HIV Investigations
- Confirmatory HIV Test
- Virus
- Viral Load
- Resistance profile - Patient
- CD4 count
- HLA B*5701 status
- FBC, U&E, LFT, Bone Marrow - Serology
- Syphilis, Hep A,B,C
- Toxoplasmo, measles, varicella, rubella, schistosoma - Anual cervical screen
HIV
- Opportunistic infections Prophylaxis
HIV Prophylaxis
- PCP
- Co-trimoxazole - MAI (Non-TB Myco)
- Azithromycin - CMV
- Dilated fundoscopy
HIV
- PEP
HIV PEP
- IDU Call Consultant
- Occupational Health
- GUM doctor