ID Flashcards
What hematologic laboratory abnormality may be found in patients with infection by the organism Rickettsia ricketsii ?
This infection causes Rocky Mountain spotted fever, a disease which affects the vascular endothelium. Thrombocytopenia is a common lab abnormality found in these patient
what bug causes vomiting and diarrhea within hours of ingestion?
S. aureus can cause severe diarrhea and vomiting within hours of ingestion due to the toxin produced in the body as a consequence of ingesting this food.
what sexually transmitted dz would Intracytoplasmic inclusions be seen on dx testing?
found during diagnostic testing, would confirm the diagnosis of Chlamydia
Fungemia
yeast in the blood
tx of fungemia?
Amphotericin B, Flucytosine or Fluconazole
Cryptococcus Neoformans is found
soil from pigeon poop, pulmonary and CNS/visual symptoms, think immunocompromised
Cryptococcus Neoformans Dx
Crypotcoccal antigen in CSF or serum. India ink stain
Cryptococcus Neoformans tx
Amphotericin B or Fluconazole for 10 weeks
Histoplasmosis
Dimorphic fungus found in soil/bird poop/bat poop in mississippi and ohio
Histoplasmosis symptoms
Fever, cough, mouth ulcers, wt loss, retinal deposits
● Chronic progressive pulmonary and Calcified nodules
Histoplasmosis tx
Tx: Long term itraconazole, Amphotericin B
chest x ray for histoplasmosis will show?
CXR will show miliary infiltrates
Pneumocystis Jiroveci (PCP/PJP) x rays finding
diffuse interstitial infiltrates, “Bat wing pattern
Pneumocystis Jiroveci (PCP/PJP) dx
BAL or induced sputum
tx of Pneumocystis Jiroveci (PCP/PJP
TMP/SMX, steroids if PO2
Pneumocystis Jiroveci (PCP/PJP most common opportunistic infection of ______patients
HIV
Tx for Botulism
Botulinum antitoxin from CDC
rheumatic fever is caused by
Group A Streptococcus (S. pyogenes)
how long after strep hemolytic infection does rheumatic fever show up
2-3week
botulism symtoms Ds
double vision, droopy head, difficulty speaking, dilated pupils and dry mouth
Major Criteria Jones criteria
Polyarthritis, Carditis, Nodules, Chorea, Erythema
Marginatum
Minor Criteria:
Arthralgias, Fever, Leukocytosis, Elevated CRP/ESR,
prolonged PR interval
Risus sardonicus (spasm of the facial muscles causing a “joker smile”) and Opisthotonus (spasm causing body to go into extreme hyperextension)
tentanus
hypersecretion of water & chloride → massive diarrhea →
hypovolemia and metabolic abnormalities
Vibrio cholerae
tx cholerae
Oral rehydration, antibiotics shorten course (Tetracycline, Ampicillin, TMP/SMX, Quinolones)
Corynebacterium diptheriae
Transmitted by respiratory secretions (trachea)
Deadly for infants
complications of Corynebacterium diptheriae
Exotoxin causes myocarditis/neuropathy
Enteric fever (typhoid fever) is caused by
salmonella (pea like diarrhea and will have fever)
systemic symptoms of enteric fever?
splenomegaly, abdominal distension/tenderness, paradoxical bradycardia (low HR even with fever), rash in week 2 (faint pink papular rash on trunk that fades with pressure)
tx of Enteric fever (typhoid fever)
Ceftriaxone or Quinolones for 2 wks
Salmonella Bacteremia differs b/c of prolonged fever and what else
osteomyelitis
Shigella dysenteriae
Sudden onset diarrhea, abdominal cramps, tenesmus (feeling as if you constantly need to evacuate bowels), fever, malaise, headache, loose stools with
blood and mucous
tx Shigella dysenteriae
TMP/SMX (Bactrim)
tx of Diphtheria
Horse serum antitoxin from CDC,Antibiotics: Penicillin or Erythromycin/Azithromycin and vaccine
pseudomembrane or corn flake membrane
Diphtheria
pertussis is caused by
Bordetella pertussis
what stage is the Catarrhal
the first stage: hacking
cough (mostly at night) most infectious stage
Paroxysmal is what stage of pertussis
2nd stage: coughing spasms followed by high-pitched inspirations (whoops, gasping for air)
final third stage of pertussis
Convalescent: happens about 4 wks after the onset of cough; paroxysms improves; lasts another 2-3 wks
jones ( must have two major criteria) use JONES for rheumatic fever what are they?
JONES (major criteria): Joints (polyarthritis), O (imagine “O” is heart shaped for Carditis), Nodules (subcutaneous nodules on extensor surfaces), Erythema
Marginatum, Sydenham chorea (choreiform movements)
minor criteria for jones criteria (PEACE) or you can have one major and two minor to make dx
PEACE: PR, ESR, Arthralgias, CRP, Elevated temperature
LGV (lymphgranuloma venereum)
○ vesicular lesions or ulcers spreading to lymph nodes (inguinal buboes) and anorectal involvement possible
Chlamydia
dx Chlamydia
ELISA/DNA test to confirm (cervical or urethral swab, or urine sample)
tx for Chlamydia
Azithromycin (1gram PO x 1) or Doxycycline course
○ Erythromycin in pregnancy
more painful than Chlamydia
○ milky discharge and dysuria initially then days later have worsening
symptoms with profuse, yellow discharge
Gonorrhea
Conjunctivitis via direct inoculation
○ copious purulent discharge (pus pouring out of eye)
Gonorrhea