Gram-Indeterminate Bacteria Flashcards

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1
Q

Chlamydiae:
trachomatis
pneumoniae
psittaci

A

-OB INTRA, lack of stain, lack muramic acid
-ES: enter, RS: replicate
-NAAT to confirm (PCR)
-Giemsa stain

TRICH:
-AC- blindness(ABC)/DK- STI/L1-L3- LGV
(Watery discharge, PID, IF, AP)
-Can spread to baby (conj/pneum)
-Can’t see can’t pee can’t climb a tree (rieter’s syndrome)

PNEUM:
-Atypical / walking pneumonia , more common in ELDERLY

PSITTACI:
-Pneumonia via birds (parrots)

TX: MACROLIDES (AZITHRO) oral and TETRA (DOXY)
-co inf of gonorrhea (tx includes CEFTRIAXONE)

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2
Q

Mycoplasma pneumoniae

A

-WALKING pneumonia, no severe SX (X-ray appears worse then pt shows, PIXR)
-No cell wall = no gram stain
-CHOLESTEROL in cell membrane

At risk: young adults (close contact), military recruit

Confirm DIA: Cold agglutination, clump RBC in cold temps also IgM.

TX: Macrolides (azithromycin)

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3
Q

Ricketts species

A

-OB INTRA (can’t produce NAD+/COA)
-Poor gram stain (but weakly gram -)
-Coccobacillary shape
-Weil Felix test: DIAGNOSIS

SX: HA/Fever/VASCULITIS(rash)

TX: DOXYCYCLINE (TETRAS)

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4
Q

Rickettsia prowazekii

A

-Rash: starts in middle of body then moves outward (spares hand/feet/head)

Risk: military camp recruits, prisoners

-SPREAD VIA LICE (LOUSE): scratching

SX: myalgia, arthralgia, pneumonia, dizzy, confusion, coma (CNS)

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5
Q

Rickettsiae rickettsia

A

Rocky Mountain Spotted Fever
-Rash not immediate
-Starts on ankles/joints, then central
-Also HA/fever/muscle pain

-SPREAD VIA TICKS (derma), direct contact

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