IDz Flashcards
Criteria for FOUO
> 38.3/100.9*
3 days admitted w/out Dx
3 OutPT visits
Illness x 3wks
What are the categories of FOUO
Nosocomial- admitted PT w/ fever >38.3*C
Neutropenic- in/out PT w/ neutrophils <500 x 3 days no Dx
HIV- PT w/ HIV Dx and fever x 4wks (out) / 3 days (in) w/ 2 day incubation
Organ transplant
What labs are drawn when investigating FOUO
What images are ordered?
Culture prior to ABX, grown x 2wks
Titers
CBC
CRP/ESR
All PTs get CXR (TB risk)
What areas of the body can be biopsied when investigating FOUO?
Empiric ABX are used if DDx includes ?
What Tx is controversial and avoided
LP Lymph Marrow Skin
Infectious dz
Steroids
What biological warfare agents are classified as Category C
What agents are classified as “other important zoonotic” ?
Nipah
Hantavirus
West Nile
Hendra
Rift Valley
Spongiform encephalopathy
Anthrax
Gram + rod shaped Bacillus Anthracis
Contact w/ hides
Ingestion of meat
Inhalation of spores
NOT transmitted person to person
Cutaneous anthrax can be AKA ?
How does this present
Malignant pustule
PEV UB
Pustule Erythematous papul
Vesicle Ulcer Brawny edema
What are the S/Sxs of inhalation anthrax?
What are the two phases?
Malaise, Lymphdenopathy
Initial: viral URI, rhinorrhea, pharyngitis
Later: dyspnea, hemoptysis
S/Sxs of intestinal anthrax
How is anthrax Dx?
GASH
GE Ascites Sepsis Hematemesis/chezia
CXR- wide mediastinum
Rapid ELISA
Culture everything
Anthrax Dx
What is given for postexposure PO prophylaxis
Cipro + LInezolid or Clindamycin
Vaccine +
Cipro or Doxy x 60 days
How are PTs exposed to aerosolized anthrax managed?
How are non-complicated, naturally acquired cutaneous cases of anthrax Tx?
Regardless of vaccination Hx: 60 days of antimicrobial drugs
Cipro x 7-10 days
What are the names of the injection meds for anthrax post-exposure prophylaxis?
These two meds are also approved for use in ? scenarios
Obiltoxaximab, Biothrax
Prevent inhalation anthrax when alternative therapies are unavail/inappropriate
What are the complications that can occur after anthrax?
What are the three types of the ‘zoonotic dz of rodents’?
Scarring
Airway occlusion
Death
Plague:
Bubonic- fleas
Pneumonic- aerosol
Septicemic
S/Sxs of Pneumonic Plague
S/Sxs of Bubonic Plague
S/Sxs of Septicemia Plague
CHAFT Hemoptysis
Chills HA Fever Toxic
BMF
Buboe (inguinal) Malase Fever
CNS, lungs (no buboes)
What would be seen on lab results if plague is present
How is it Tx
What two meds are used for post-exposure prophylaxis
WBC 20K w/ inc bands
Inc split fibrin split (Low DIC)
Inc LFTs
Strepto/Gentamycin
Doxy/Cipro
What are the complications of plague
What are the initial and later rash locations of smallpox?
DIC ARDS Shock Superinfection
Initial: oropharynx, face, forearms
Later: trunk and legs
What is the sequence of a smallpox lesion
Synchronous: MVPSS Maculopapular Vesicle Pustule/pocks Scabs/scars w/ sebaceous destruction
Characteristics of Hemorrhagic Smallpox
Characteristics of Malignant Smallpox
Dusky erythema
Petechia
Hemorrhage of skin/membranes
Lesions
Velvet vesicles
Red fine grained skin
No formation of pustules/scabs
Tx for smallpox?
Tx for small and monkeypox?
How often are new vaccines needed?
Tecovirimat
Cidofovir
10-15yrs
How is post-smallpox exposure prophylaxis managed?
What is the natural reservoir of cow pox?
Vaccinate if within 4 days and no vaccine Hx
CDC guidance for eligibility of Vaccina Immune Globulin within 3 days (best within first 24hrs)
Small wild rodents
What form of variola is more deadly?
Hemorrhagic- uniformly fatal by day 6 of rash
Malignant- frequent fatal
Major- 30%
How long for HSV initial and recurrence Sxs/viral shedding to stop?
How is HSV described in words
Initial: 2wks, 3wks
Rec: 10 days, 5 days
Erythematous papule to vesicle to pustule to ulcer
How is HSV Dx
How is it Tx
Punch biopsy- ImmComp
Tzanck smears- MNG cells
PCR
Culture- CSF, serum
FAV-clovir
Topicals: PA-clovir, Doconasal
How is HPV Dx
Biopsy- ImmComp
PCR- 9 high risk types, 5 low risk types
Cervical Pap
STD panel: Hep HIV Syphillis G/C
How is HPV Tx surgically
How is HPV Tx w/ meds?
CO2 laser Electrosurgery LN2 cryotherapy Excision (laser therapy for inner lesions on females)
Podofilox
Imiquimod
Trichloroacetic acid
Gonorrhea is AKA ?
What type of microbe is it
Clap
Gram - intracellular aerobic diplococcus
S/Sxs of Gonorrhea
F: D/c CMT Dysuria/pareunia
M: D/c Epididymis pain Dysuria
Both: fever, infection of membrane tissue
What is the fear with gonorrhea in women that goes unTx
What is the form of disseminated gonorrhea infection?
PID: acute salpingitis leading to ectopic pregnancy
Arthritis Dermatitis Syndrome: Polyarthralgia Septic arthritis Tenosynovitis Endocarditis Meningitis
How is Gonorrhea Dx
What is the CDC’s recommendation for Dx
GT PUC
Gram stain TMA PCR US/CT
Culture isolation*
Culture and Susceptibility testing
What types of gonorrhea strains are more likely to exhibit antimicrobial resistance?
How is Gonorrhea Tx
MSM strains
Ceftriaxone and Azithromyin
Alt: Azithromycin 2g PO
Tx fail: Ceftriaxone + Azith + test for cure 7days
What is the MC reported IDz in the US
How is this infection Dx
Chlamydia, especially in PTs <25y/o
TMA
How is chlamydia Tx
What microbe is the cause of LGV and what family of microbe does it belong to
LGV occurs in 10% of PTs w/ ?
Azithromycin, Ceftriaxone
Alt: Doxy
C Trachomatis- Chlamydia family
Genital ulcer Dz
What are the three stages of an LGV infection
Primary: <30 days after infection w/ small/painless papule that rapidly heals
Secondary: 2-6wks after initial, painful unilateral bubo, systematic spread
M: Dx w/ groove sign: inguinal ligament raised over buboe
F: rarely dx, lack of adenopathy
Tertiary: genitoanorectal syndrome, usually in F PTs
How is LGV Dx
How are they Tx
Complement fixation 1:64
Therapeutic: aspiration
Tx: Doxy x 3wks
What organisms can cause Nongonococcal urethritis:
Non-G Urethritis: Mycoplasma genital: MSM, PID, labor Trichomonas Chlamydia* Ureaplasma Mycoplasma hominis
Rarely:
LGV HSV Syphillis
How is NG and G urethritis Tx
How does syphilis present?
NGU: Azith, Doxy
GU: Azith, Ceftriax
Round, demarcated borders, painless w/ regional adenopathy
What form of syphilis is considered non-infectious
What are the S/Sxs of congenital syphilis
Tertiary- Gummatous syphilis
Multiple organ involvement either early (first 2yrs) or late (older than 2yrs)
2* syphilis may present w/ ? derm finding
What parts of the body are commonly affected by gummas syphilis?
Alopecia
Liver Skeleton Testis
Cardiovascular syphilis can arise ? yrs later and usually affects ?
What may be found on PE?
10yrs after primary infection
Ascending aorta
Aortic valve insufficiency
When can neurosphylis develop?
How can they present
Any stage of syphilis
CN8 palsy
Argyle Robertson pupils
Tabes dorsalis
Stroke/meningitis Sxs
Syphilis can infect a fetus how long after an infection?
Why is this infection not caught during prenatal work ups?
4yrs prior
Late/limited prenatal care
Failure to adhere to screening
CDC recommends that all females delivering stillborn babies prior to ?wks are tested for syphilis?
What are the PE findings of a PT w/ late congenital syphilis?
20wks
Depressed facial bones
Hutchinson incisors
Mulberry molars- too many cusps
What lab result is used to monitor the efficacy of care for PTs Tx for syphilis
What other systemic Dzs/issus can trigger a false-pos for syphilis on a RPR test?
VDRL titers
Infection, viral/bacterial Lupus Immunizations Marijuana use (biological false pos) Pregnancy
What are the alternative meds for Tx syphilis?
What med is added to Pen G when Tx neurosyphilis
How is congenital syphilis under 30 days Tx?
CDT: Ceftriax Doxy Tetra
Probenicid
Aqueous Pen G
How is BV Tx
Chancroid infections are usually found in ? 2 countries and co-infect w/ ?
How does it present?
Clindamycin PO/cream
Tinidazole
Metronidazole*
Africa, Caribbean
HSV 2, Syphilis
HA Anorexia Painful ulcer
Bubo
How are chancroids definitively Dx
How are they Tx
Gram stain-unreliable
Culture- definitive
Ceftriaxone
Azithromycin
Granuloma inguinale is AKA ?
How does this present?
Donovanosis
Beefy red bump that is painLESS
Spreads w/ erosion, depigmentation
Which IDz has to be Dx w/ punch biopsy?
What is seen when viewed under microscope?
Donovanosis
Speckled round eggs
How is Granuloma Inguinale/Donovanosis Tx
Bed bugs belong to ? species
Azithromycin x 3wks
If ulcers don’t respond within few days, add Gentamicin (aminoglycoside)
Cimex
? term encompasses lice and what is the concern w/ these infestations
Where are the different types usually seen?
Pediculosis- secondary skin infections
Capitis- occipital, post-auricular
Distance of nits from scalp= duration of infestation (closer to scalp= newer infection)
Corpus: bites found anywhere but no nits in hair
Phithrius pubis: pubes, perienium, eyebrows and eyelashes
Pedicuosis infestations can quickly be visually Dx by ?
How are these Tx
Woods lamp
Permethirn 1%
Ivermectin 0.5% for resistance and PTs over 6mon old
Malathion 0.5% (8-12hrs)
REPEAT Tx in 7 days to kill nits
What type of pediculosis infestation is indicative of child abuse?
What are scabies eggs called?
Pediculosis pubis
Scybala
What was the first human Dz proven to be caused by a specific pathogen?
What PT populations is this infestation highest in?
Scabies
<15y/o
Sexually active
ImmComp
Debilitated
How do scabies present?
What PT population is this type of infestation rare in?
Crescendo pruritis, worse at night
Neonates
How do scabies appear on PE?
Where are they usually seen?
If PT that is ImmComp acquires scabies infestations, how do they present?
Serpinginous
Burrow- pathognomonic for scabies infestation
Webs of fingers
Flexors of wrist
AC space
Axilla
Bullous lesions
How is a scabies infestation Dx?
How are they Tx?
Skin scrapings for mite/eggs
Permethrin 5%- neck down
Ivermectin PO
Bed bugs are a vector for ? and ? adverse reaction is well described with their infestation
How do bed bug infestations present in clinic
Hep B
Anaphylactoid
Papule Bullae Wheal
Hemorrhagic puncta
How are bed bugs Tx
Which forms of hepatitis are transmitted through fecal/oral or through serum?
Creams w/ CCS
PO antihistamine
F/o: A E (acute only)
Serum: B C D G (acute and chronic)
Chronic hepatitis can lead to ? or ? and is caused by ? form
What labs are ordered and what will be seen on results for hepatitis?
Ca Cirrhosis
B and C
Urine/serum bilirubin
Elevated serum bilirubin= infectious hepatitis
+30mg= severe hepatitis
Prothrombin time