PPT2 HACEK organisms

What does the acronym HACEK stand for?

H - Haemophilus

A - Aggregatibacter actinomycetemcomitans

C - Cardiobacterium hominis

E - Eikenella corrodens

K - Kingella

What is the Gram stain for the HACEK organisms?

GRAM NEGATIVE

What is the morphology of the HACEK organisms?

BACILLI

What oxygen environments do the HACEK organisms need?

5-10% CO2

Which infection is most associated with the HACEK organisms?

endoCARDITIS

HACEK = heart problems

HACEK organisms are usual flora of which area?

ORAL CAVITY

associated with BITE WOUNDS

Which HACEK organism is associated with HIGH CO2 concentrations and dental plaque?

Aggregatibacter aphrophilus

Which HACEK organism causes HEART MURMUR and Coronary heart failure?

Aggregatibacter aphrophilus

Which 2 strains of Aggregatibacter aphrophilus are seen?

X dependent

X independent

Which Aggregatibacter spp. is associated with cattle, sheep, pig, and horse bites?

Aggregatibacter actinomycetemcomitans

Which test is used to differentiate between A. actino and A. aphro. Which one is positive?

UREASE

A. aphrophilus is UREASE +

Which Aggregatibacter spp. is associated with STAR SHAPED colony center?

Aggregatibacter actinomycetemcomitans

Which HACEK organisms grow on MAC agar?

NONE

Where is Cardiobacterium hominis naturally found?

Nose, mouth, and throat

What is the main infection caused by CARDIObacterium hominis?

Endocarditis

Which HACEK organism is associated with DENTAL PROCEDURES and growth on heart valves + antibiotic resistance?

Cardiobacterium hominis

Which HACEK organism is associated with FALSE gram positive reactions?

Cardiobacterium hominis

Which HACEK organism is associated with ROSETTES?

Cardiobacterium hominis

Which HACEK organism is associated with Glucose, Mannitol, and sucrose fermentation?

Cardiobacterium hominis

Which TWO HACEK organisms are associated with PITTING on agar plates?

Cardiobacterium hominis

Eikenella corrodens

Which HACEK is similar to Neisseria but is Catalase =

Eikenella corrodens

Which growth factor does Eikenella corrodens require?

X factor

Which HACEK can be correlated with BLEACH odor?

Eikenella corrodens

Which HACEK is Oxidase +, catalase = and ASACCHAROLYTIC

Eikenella corrodens

Which HACEK is associated with FIGHT AND BITE wounds and oral surgery?

Eikenella corrodens

Which 2 HACEK are normal flora in the UPPER respiratory tract?

Haemophilus spp. (influenza and parainfluenza)

Kingella spp.

Which HACEK is associated with CHILDREN, bone, and joint pain?

Kingella kingae

Which HACEK has bacilli with SQUARE ENDS?

Kingella spp.

Which HACEK is Oxidase +, Catalse =, SUGAR FERMENTING W/O gas

Kingella spp.