Bacteria

15 flashcards · Other · by Jared Blackwell

1. Staphylococcus aureus Gram Pos., Cocci-clusters Skin infection, toxic shock syndrome, endocarditis, MRSA. B-hemolytic, catalase +, coagulase +,

2. Staphylococcus aureus - Gram Positive Staphylococcus epdermidis (Coagulase - )

3. Staphylococcus epidermidis Gram Positive Spreads everywhere. Opportunistic infections Prosthetic devices Heart valves IV catheters

4. Which bacteria are gram positive, Aerobic, catalase positive, coagulase negative, and cause UTIs?

   Staphylococcus saprophyticus Genitals & perineum UTIs and obstructive uropathy.

5. Describe Staphylococcus bacteria

   -Gram Positive -Cocci, grape like clusters. -Aerobic -Catalase + --Coagulase = S. aureus --Coagulase NEGATIVE = S. saprophyticus and S. epidermidis

6. Streptococcus pneumoniae - Gram Positive alpha-hemolytic diplococci invasive infection. Meningitis, sinusitis.

7. What are the Bacteria with Capsules that make them antiphagocytic?

   "Some Killers Have Pretty Nice Capsules" -Streptococcus pneumoniae -Klebsiella pneumonia -Haemophilus influenzae -Pseudomoas aeruginosa -Neisseria meningitidis -Crytococcus neoformans

8. Viridans streptococci -a-hemolytic, Gram POS. -cocci in chains -Dental infections, endocarditis, and opportunistic infections.

9. Streptococcus pyogenes Group A strep Beta hemolytic cocci in PAIRS and CHAINS Cause strep throat, scarlet fever, toxic like syndrome.

10. Campylobacter jejuni-Gram Negative. -Rod "gull wings, bacillus -Grow at 42C in CO2 -Poultry, dairy -Gastroenteritis, Guillain-Barre syndrome

11. Pseudomonas Gram negative rod, non-lactose Grape-like odor Pneumonia, Sepsis, Ecthma gangrenosum, UTI, Diabetes, Osteomyelitis, Muccoid capsule, Otitis externa, Nosocomial infection, Addicts, Skin infection.

12. Characterize E. Coli

    Gram negative rod, lactose ferment. Use pili, capsules, LPS endotoxin Enteroinvasive: invades gut --> necrosis --> dysentery Enterotoxigenic: Enterotoxins > no invasion/inflammation. Traveler's diarrhea. Enteropathogenic: NO toxin, flattens pilli. Pediatric diarrhea Enterohemmorhagic: Shiga-like toxin, HUS, dysentery.

13. Characterize Salmonella, Shigella, and Yersinia

    Gram negative baccilli rods. ALL non-lactose ferment ALL non oxidative Peyer's patches in gut, enteritis. Salmonella is H2S producing Shingella and Yersinia are no H2S produce.

14. Laboratory and Clinical findings in Hemolytic Anemia

    Spherocytes, schitocytes Reticulocytosis RBC breakdown products: LDH, Increase BM storage of iron Decrease haptoglobin. Splenomegaly Dark urine Jaundince Heptomegaly

15. Describe microangiopathic hemolytic anemia (MAHA)

    RBCs split by fibrin occluded vessels. DIC, TTP, malignant hypertension, SLE Diagnosis: Anemia, thrombocytopenia, hemolysis Schistocytes - helmet cells, triangle cells.