Infectious disease Flashcards
Define mild asthma:
speak sentences, wheezing only on exhalation, POx >95%, PEFR >70%
Define moderate asthma:
speak phrases, wheezing on exhalation and inhalation, POx 90-95%, PEFR 40-69%
Define severe asthma:
speak only words, wheezing on exhalation/inhalation or quiet, POx <90%, PEFR <40%
Indication for starting controller
2+ exacerbations in 6mo requiring oral CS
>4 episodes of wheezing/year that last at least 1 day, interfered with sleep, has positive asthma predictive index
What are signs of atopic disease (positive asthma predictive index?
1 major - parenteral asthma, atopic dermatitis
2 minor - allergen sensitization, eosinophilia >4%, wheeze without URI
Describe criteria for intermittent asthma
symptoms or use of SABA <2days/wk, nightime awakenings <2x/month in 5-11yr, no interference with activity, baseline FEV1 >80%, steroids 1x/year for exacerbation
Rx for intermittent asthma
SABA
Rx for mild persistent
Add low dose ICS or LTRA for 0-4
Rx for moderate persistent
0-4y medium dose ICS
Older pt low-dose ICS and LABA or stay on low dose ICS+LTRA
Escalation of therapy for moderate persistent
Medium dose ICS + LABA or LTRA
Rx for severe persistent
High dose ICS + LABA/LTRA
Escalation for severe persistent
HD ICS + LABA/LTRA and oral CS
What are indications for oral steroid use?
Does not respond to initial albuterol, mod to severe exacerbation, hx of recent oral steroid use, optimal albuterol therapy at home, hx of life-threatening episode, anti-inflammatory 2-4hr, improve SABA in 1-2hr
When do you have to taper steroid use?
if >10 days of usage
What are indications of well-controlled asthma?
symptoms/SABA usage <2/week oral CS use <1/year night waking <1/mo FEV1 or PEFR normal activity normal
Indication for long-acting B2-agonists
Poor control on low to moderate doses of ICS, control of nocturnal symptoms, exercise-induced asthma
Can you develop antibody to LABA
yes
What are SE of Mg sulfate
flushing, malaise, hypotension and bradycardia
What is atrovent, SE, and function
ipratropim, smooth muscle relaxant, can cause pupillary dilation
First choice Rx for allergic rhinitis in young kids
oral antihistamine
First choice Rx for allergic rhinitis in older kids
intranasal CS
Define anaphylaxis precisely
acute skin + respiratory/decreased BP
2 or more (skin/mucous membranes, respiratory, cardiac GI)
Decreased BP exposed to known allergen
Pattern: IUGR, sepsis, sensorineural, periventricular calcification, pneumonitis, hepato-splenomegaly, thrombocytopenia, dental defects
CMV
Pattern: rash, IUGR, senosrineural hearing loss, cataracts/microphthalmia, PDA, pulm stenosis, myocarditis, T cell dysfunction
Rubella
Which viral infection is less likely transmitted in 3rd trimester?
rubella
Which virus is more often periparum transmitted
HepB
When is highest infectivity for varicella?
if mom ets it 5 dys before delivery to unwith 48hrs after delivery
Pattern: encephalitis, low birth weight, paralysis with muscular atrophy limb, increased susceptibility to infection, rudimentary digits, chorioretinitis, microophthalmia, cataracts, clubfoot
varicella
Pattern: high fever, cough, coryza, conjunctivitis, Koplik spots 2 days after onset, rash last 7 days, appears 4 days, brawny-coppery appearance
measles
Pattern: parotitis with pain and fever, epididymo-orchitis, encephalities in males, deafness
Mumps
Complications of measles
reactivation of TB, bacterial PNA, severe otitis media, appendicitis, laryngotracheitis, stomatitis, fatal neuro subacute sclerosing panencephalitis
Pattern: generalized rash, HA, lympadenopathy, fever, polyarthralgia, and polyarthritis, encephalitis
rubella
Pattern: rash, papules, centrally and peripherally, high vaccine failure, can have associated superinfection of staph A or group A strep
Varicella
Pattern: mild 7-10 days of symptoms before rash appears
Erythema infectiosum - Parvo19
Rx for Parvo19 chronic
IVIg for chronic
Complications of Parvo19
polyarthropathy, transient aplastic crisis, myocarditis, acute fulminant hepatitis
Pattern: high fever, rapid deferevescence –> papular rash, high seizure risk because of fever curve
HHV-6
Pattern: fever, exudative pharyngitis, lymphadenopathy, hepatosplenomegaly
EBV
Rash appear with ampicillin or penicllin exposure
EBV (can see with CMV)
Traveler’s diarrhea
Ecoli enterotoxigenic
Rice water diarrhea
vibrio
shellfish, and salad in winter
rotavirus
Summer, water in wilderness, foreign travel, day care centers, flatulence, foul-smelling stools, prolonged infection with soft stools, weight loss
giardia
Prolonged 1-2 weeks of diarrhea or longer
cryptosporidium
Crampy, watery diarrhea toxin producing in mexican food, meat, poultry
C. perfringens
Voluminous diarrhea
vibrio
Fever/pulse dissociation
typhoid fever
Petting zoo, farm animals
shiga-toxin producing, STEC, cryptosporidium
Swimming
shiga-toxin, cryptosporidium
Petting zoo, farm animals
shiga-toxin, cryptosporidium
Animals
cryptosporidium, campylobacter, yersinia, nontyphoid salmonella
Chicken
nontyphoid salmonella, campylobacter, c. perfringens
Hamburger
STEC +/- HUS
Pork
Yersinia
Shellfish/salad
Norovirus
Raw fruits/vegetables
STEC, nontyphoid
Unpasteurized milk
campylobacter, nontyphoid
Picnic, banquet
S aureus, b. cereus, clostridium perfringens
Travel
Enterotoxigenic, S. typhi, shigella, vibrio cholera, giardia, cryptosporidium, entamoeba histolytica
fall-winter
rota, noro
summer
giardia, crypto, STEC
Hemoglobinopathy
nontyphoid salmons
Iron overload
yersinia
HIV infection
cyrptosporidium, nontyphoid salmonella