IDz Block 2 Flashcards
Coccidio causes ? fevers
Where is Coccidio endemic to and in ? PTs
San Joaquin/Valley Fever
C Immitis/C Posadasii
AZ CA NM West TX
Lab
Filipino Pregnant
What are the S/Sxs of a Coccidio infection
How does the chronic version present
Pulm: 60% ASx
Acute pneumoina- hilar/mediastinal adenopathy
E-multiform/nodosum
Chronic Pneumonia:
TB-like w/ thin wall cavities/nodules
What is the more common for of Coccidio infections
What parts of the body can it infect?
Secondary/disseminated
Fulminant- MC in Filipino AfAm Pregnant ImmComp
Skin
Bones- vertebrae
Meninges
How is Coccidio in Pulm, Disseminated and Meningeal forms Tx
Pulmonary: Sx care
Disseminated, severe: Amphotericin B
Other: Flu/Itraconazole
Meningeal:
Fluconazole x life
IV Amphotericin B
New: PO VT 1598
Histo is the MC cause of ? pulm/cardiac issue
What are the S/Sxs of Histo infection
Fibrosing mediastinitus
Flu-like, hilar/mediastinal lymphadenopathy
Who/how does chronic pulmonary HIsto present
Who/how does disseminated cases present
If PT is being worked up for Addison’s Dz, ? infection needs to be r/o
Male smokers w/ TB like Dz: Bullae Cavitation Granuloma
AIDS/ImmComp: Fever Anemia Weight loss Skin/PO lesions
Histoplasmosis
When Dx Histo, what Dx needs to be r/o
How is Histo Tx
What forms Tx is controversial
TB w/ PPD TST
Acute Pulm: only Tx if hypoxemia/ lasts >1mon
Sev: Amphotericin B
Mild/Mod: Itraconazole
AIDS PTs: Itraconazole x life
Fibrosing Mediastinitis- consider if inc ESR or Complement titers >1:32
What forms of Histo is Tx not indicated
Who does Crypto present more commonly in?
Self-limited/flu like
Acute pericarditis
Rheumatoid manifestation
ASx
M>W
AIDS when CD4 <200 w/ CNS (MC Meningitis)
What Sx is less common w/ Crypto meningitis and what is frequent
How can the pulmonary version present
How does the cutaneous version present
Rare: Fever/stiff neck
Common: N/V
Subacute to ARDS
Papule Pustule Ulcer Nodule
What are two random sites of infection that can indicate Crypto
Why is Crypto hard to Tx
How is it Tx
Prostate
Medullary cavity of bones
Encapsulated
ImmComp-
Pulm w/ Fluconazole
CNS w/ Amphotericin B
Who does Zygomycosis infect
What is Paracoccidomycosis similar to
Ca
Acidotic DM
Malnourished kids
Severely burned PTs
South American blstomycosis
What are the 5 types of non-albicans yeasts and what are they associated w/
Tropicalis- malignancy Krusei- resistant to fluconazole Parapsilosis- TPN Lusitaniae- Amphotericin resistant Glabrata- urinary tract, fluconazole resistant
What are the 5 types of superficial Candidiasis infections
What are the two systemic ones?
Intertrigo Vaginitis Onychomycosis Thrush Esophagitis
Funguria
Candidemia
What PTs get thrush
Esophageal Dz form is seen in who/how?
Neonates
DM on ABX
ImmSupp
PTs incorrect inhaled steroids
Odynophagia Dysphagia ImmComp- often w/ thrush
Most systemic/deep Candidiasis infections are Tx by ?
Diarrhea means an abnormal increase in ? criteria
How long is it present for it to be acute or chronic
IV Amphotericin B
IV Voriconazole
Weight: 250gm/day
Liquid: 80% water
Frequency: 3/day 2/wk
<3wks
>3wks
How does Acute GE present
What are the different causes of food poisoning and incubation times
1-5 days: watery diarrhea, N/V
Ultrashort: 1-2hrs, chemical
Short: 1-6hrs, preformed toxin
Long: 8-16hrs, toxin produce post-consumption
What is the most expensive food borne illness causing microbe
What are two medical conditions that predispose individuals to diarrhea
Salmonella
C Diff- PPIs, ABX
Plesiomonas species- liver Dz/malignancy
Salmonella species are more likely to infect ? PTs
Rotavirus is more likely to infect ?
Malaria Achlorhydria Sickle Cell Hemolytic anemia Dysmotility ImmSupp Malnutrition
Hospitalized
Giardia species are more likely to infect ? PTs
When is viral AGE suspected?
Chronic pancreatitis
Achlorhdria
Cystic fibrosis
Agammaglobulinemia
No bacterial/epidemiology clues
Prominent vomit
Over <3 days
14hrs incubation
Adenovirus
Calcivirus
Fecal/Oral transmission
Serotypes 40-41
Diarrhea Adeno>Rota x 1-2wks
Tx: supportive
Fecal/Oral transmission
Oysters
Lasts 3 days, Tx: supportive
Rotavirus
Unique fact
MC cause diarrhea in infants
MC cause of death from diarrhea in developing country
Fecal/Oral spread
Tx: support
Vaccine avail, not used
Cytomegalovirus
What adverse outcomes can occur w/ this infection
Usually ImmComp/Crohn’s PTs
Can be invasive/colitis
Watery/melena stools
Tx: support, antivirals
Toxic Mega Sepsis Peritonitis Death
Yersinia Entericolitica
Staph A
Raw pork causing Sxs in 1wk
Pseudo-appendicitis/sepsis
polyarticular arthritis
Tx: Cipro, Trimeth/Sulfa
Sudden N/V/D, 30m-8hrs
Tx: supportive
Bacillus Cereus
Clostridium
Multiplies in foods at room temps
Spores heat resistant
Rice/pastas- Fried Rice Syndrome
Tx: Cipro, Trimeth/Sulfa
Gas gangrene, mild GI Sxs
Foods high in protein/starches
Not contagious
Tx: supportive
Campylobacter jejuni
Community acquired inflammatory enteritis
Fecal/oral, chicken, puppies
or unpasteurized food transmission
Pseudoappendicitis Abd pain (no pain w/ salmon/shigella) Fever +104 HA Myalgia +10 BM/day Dx: stool culture Tx: Azithromycin
Salmonellosis
Nontyphoid
Birds Amphibs Reptiles Fruit/Veg
Eggs/Dairy
Cholera-like diarrhea
Dx: culture MacConkey agar
Tx: Cipro
Typhoid is AKA ? Fever
What are the two types of Typhoid
Enteric
S Typhi= typhoid fever, more common/severe
S paratyphi= more mild
How is Typhoid transmitted
What is the hallmark of the infection
Fecal/urine contaminated foods
Mononuclear phagocytic cells in Liver Nodes Spleen Peyer patches of ileum
What are the different timing of phases and Sxs of typhoid
Incubation: ASx or diarrhea/constipation
Wk 1: HA Malaise Fever
Wk2: Rose spots on chest/abdomen, fade w/ pressure
Bradycardia w/ dicrotic pulse
Wk 3: pea soup diarrhea, AMS, toxic/death
Wk 4: fever, AMS and distension resolve
How is Dx of typhoid definitive
How is it Tx
Isolated from marrow sample
Cipro
Ceftriax/Azith in Asia
What are the two microbes that cause 90% of Shigella infections
What does it cause and how
Sonnei
Flexneri
Bacillary dystenery via invasion of colonic epitherlium and enterotoxin production
How is Shigellosis transmitted
This infection doesn’t cause but increases viruence of ?
Fecal/oral w/ contaminated food/water
Colitis
How do Shigellosis infections present
How is it Dx and what is rarely seen
How is it Tx and what is avoided
Bloody/mucus diarrhea w/ lower abdomen tenderness but norm/hyper sounds
Stool culture w/ R/WBCs
Rarely leukocytosis
Cipro
NO narcotic anti-diarrheals
How is ETEC Tx
How does O157:H7 present
Loperamide w/ one of:
Azith or Cipro
Aemcolo
Shiga toxin causes watery shifting to bloody diarrhea
How does Cholera present
How is it Tx
Painless rice water stool w/ fishy odor
No fevers
Fluid/E+
Doxy/Azith can shorten course
What is the vaccine for cholera and when does it have to be taken
Listeria is dangerous in ? PT populations
Vaxchora for 18-64y/os 10 days before travel
Pregnancy- Hispanic
Neonate
Elder
ImmComp
How is Listeria transmitted and how does it present
What are possible but rare presentations
Foodborne illness presnting w/ diarrhea
PAMAE Pneumonia Abscess Meningitis/Encephalitis Arthritis/osteromyelitis Endocarditis
How do adults present w/ Listeria
How can neonates present w/ this infection?
FM BAH
Fever Myalgia Back pain Arthralgia HA
CNS Abscess Granuloma (AMS common, brain stem infection= encephalitis)
How is Listeria Dx
How is it Tx
CSF best
Blood culture
Wet mounts can show motile microbes
Ampicillin or TMP/Sulf
Empiric antimicrobial therapy is given to PTs for Listeria if ?
Where can Botulism infections come from
Exposed, Fever >100.6
Canned foods/honey
Wounds- IVDU
Smoked meats
Hemorrhagic fever viruses are all ? types
They all damage ? structures in the body
RNA- enveloped in fatty coat
Microvasculature= inc vascular permeability
What form of Dengue is more virulent
What is it’s carrier
DEN-2
Aedes aegypti/albopictus- 35N/35S day time feeder prefers human
PTs w/ low WBCs and fever indicates ? etiology
How does Dengue present
Viral
High fever +105
Retro orbital pain- common
Trunk scarlatinaform or maculopapular rash
Why is it dangerous when a Dengue fever stops
This period when it stops causes PT to be at increased risk for ?
Returns in 24hrs worse- Saddleback fever
DHF or DSS
What is the hemorrhagic presenting manifestation of Dengue
1/3 of PTs w/ DHF form of Dengue will have ? Sx
Almost all PTs w/ DHF will have?
Petechiae/purpura
Conjunctival injection
Pharyngeal injections
What is the MC PE finding for Dengue
What is the name of the Dx test
Petechiae/bleeding at venipuncture
Tourniquet test: inflate BP x 5min, + if 20 petechiae per sq inch
What will be seen on lab results in PTs w/ Dengue
Leukopenia at end of febrile phase
Heme/Lymph increase before defervescence/shock
HypoNa- MC metabolic change
LFT- low albumin
Hct below 20% will be seen as ? and if it falls below 10% ? is seen
What lab results can be usd for Dx Dengue
20- seeping plasma
10- real bleeding
IgG/IgM inc x4
IgM shows at day 5
DENV R-PCR or NSI- first week
IgM anti-Den ELISA- day 5 of illness
How are the different forms of Dengue Tx
What is the name of the vaccine and who can get it
DF: acetaminophen
DHF/DSS: IV fluids, blood transfusion w/ FWB
Dengavaxia- 9-16 w/ previous Dengue Dx
What are the complications from Dengue fever
Neuro: encephalopathy, GBarre, Transverse myelitis
DHF/DSS can lead to liver failure
Over hydration
What mosquito carries Yellow Fever
How are yellow fever infections established in the body
Aedes aegypti
Mosquito pukes virus
Replicates in reticuloendothelial cells, overwhelm ImmSystem
Yellow fever can present w/ ? Sxs
What are the phases
Jaundice
Black water vomit
Saddle back pattern
Acute, 3 days: fever/HA/N/bilious vomit Conjunctival injections
24hr remission
Toxic Phase
What will be seen on lab results in Yellow Fever
How are they Tx
Leuko/Thrombocytopenia
Inc convalescent titer
IgM inc 7-10 days post infection
Central venous access (FFP) Mosquito netting
What is the natural reservoir of Ebola
What is the single subtype
Bats
Marburg
What type of virus is Ebola
What is the name of the vaccine
Filo= thread
VSV-ZEBOV for >18y/o
What will be seen on PE late in an Ebola infection
What two findings are indicative of a fatal or poor prognosis
Hippocratic face
Bleeding
Tachypnea
Hiccups
Tachypnea
What will be seen on lab results in Ebola PTs
How is it Dx
-penias
Metabolic acidosis
Inc BUN/SrCr
IgM/IgG ELISA
PCR
How is Ebola Tx
Virus bodies have been isolated from what two locations in the body after recovery
Re-hydrate Isolate Nutrition
Human convalescent plasma
ZMAPP
Anterior chamber
Semen