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Sachin Shared "Infectious" - 302 Picmonics

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Infectious

Staphylococcus aureus Characteristics
Characteristics
Gram-Positive
Cocci
Catalase-Positive
Coagulase-Positive
Beta-Hemolytic
Protein A Virulence Factor
Inhibits Phagocytosis
MRSA
Resistant to Beta Lactams Due to Altered Penicillin Binding Proteins (PBPs)
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2 mins
Encapsulated Bacteria
Characteristics
Polysaccharide Capsule
Inhibits Phagocytosis
Removed by Spleen after Opsonization
Organisms
Streptococcus agalactiae
Streptococcus pneumoniae
Haemophilus influenzae
Neisseria meningitidis
Escherichia coli
Salmonella
Klebsiella
Pseudomonas aeruginosa
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3 mins
Staphylococcus epidermidis
Characteristics
Cocci
Gram-Positive
Catalase-Positive
Urease-Positive
Coagulase-Negative
Novobiocin-Sensitive
Component of Normal Skin Flora
Infects Prosthetic Devices and IV Catheters
Contaminates Blood Cultures
Produces Adherent Biofilms
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2 mins
Streptococcus pyogenes Characteristics
Characteristics
Group A Streptococci (GAS)
Gram-Positive
Cocci
Beta-Hemolytic
Catalase-Negative
Bacitracin-Sensitive
Hyaluronic Acid Capsule
Streptolysin O
DNase
Streptokinase
Exotoxin A
Pyrrolidonyl Arylamidase (PYR) Positive
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2 mins
Streptococcus agalactiae
Characteristics
Group B Streptococci
Gram-Positive
Cocci
Beta-Hemolytic
Bacitracin-Resistant
Catalase-Negative
Pyrrolidonyl Arylamidase (PYR) Negative
Polysaccharide Capsule
Hippurate Positive (+)
Produces CAMP Factor
Enlarges Area of Hemolysis by S. aureus
Disease
Mainly in Babies
Meningitis
Pneumonia
Sepsis
Colonizes Vagina
Treatment
Screen Pregnant Women at 35-37 Weeks
Penicillin
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3 mins
Streptococcus viridans
Characteristics
Gram-Positive
Cocci
Catalase-Negative
Alpha-Hemolytic
Optochin-Resistant
Not Bile Soluble
Normal Flora of Oropharynx
Synthesize Dextrans from Sucrose
Disease
Dental Caries
Subacute Bacterial Endocarditis
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2 mins
Enterococci
Characteristics
Gram-Positive Cocci
Catalase Negative
6.5% NaCl
Grows in Bile
Normal Colonic Flora
Signs and Symptoms
Urinary Tract Infection
Subacute Endocarditis
Penicillin Resistant
VRE (Vancomycin Resistant Enterococci)
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2 mins
Streptococcus Bovis
Characteristics
Group D Streptococci
Catalase-Negative
Gram Positive Cocci
Does Not Grow in 6.5% NaCl
Grows in Bile
Clinical Features
Endocarditis
Bacteremia Associated with Liver Disease
Bacteremia Associated with Colon Cancer
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2 mins
Corynebacterium diphtheriae
Characteristics
Gram-Positive
Bacillus
Exotoxin
ADP Ribosylation of Elongation Factor 2
Beta Prophage
Lysogeny
Tellurite Agar
Chinese Letters
Metachromatic Blue Red Granules
Aniline Stains Deeply Methylene Blue
Signs and Symptoms
Pseudomembranous Pharyngitis
Lymphadenopathy
Myocarditis
Polyneuritis
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3 mins
Actinomyces Israelii
Characteristics
Gram-Positive
Bacillus
Anaerobe
Branching
Oral Flora
Dental Work
Oral Trauma
Associated with IUDs
Signs and Symptoms
GU Infections
Draining Sinus Tract
Facial Abscess
Yellow Sulfur Granules
Treatment
Penicillin
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2 mins
Whipple's Disease
Tropheryma Whipplei
Gram-Positive
Middle-aged, Caucasian men and Farmers
Malabsorption
Mesenteric Nodes
Arthralgias
Cardiac Symptoms
Neurologic Symptoms
PAS-positive Foamy Macrophages
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1 min
Neisseria Meningitidis
Characteristics
Gram-Negative
Diplococci
Chocolate Agar
Thayer-Martin Media
VPN
Oxidase-Positive
Maltose Fermentation
Glucose Fermentation
Endotoxin
Lipooligosaccharide (LOS) in Membrane
Polysaccharide Capsule
IgA Protease
Disease
Waterhouse Friderichsen Syndrome
Adrenal Insufficiency
Petechial Rash
Treatments
Ceftriaxone
Rifampin Prophylaxis
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5 mins
Yersinia Pestis (Black Plague)
Characteristics
Gram-Negative
Bacilli
Oxidase-Negative
Non-lactose Fermenting
Prairie Dogs
Fleas
Polysaccharide Capsule
Vw Antigen
F1 Antigen
Inhibits Macrophages
Southwest Region
Signs and Symptoms
Lymphadenopathy
Pneumonia
Black Cutaneous Hemorrhagic Lesions
Buboes
Diagnosis
Bipolar Giemsa Staining
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3 mins
Yersinia Enterocolitica
Characteristics
Gram-Negative
Bacilli
Non-lactose Fermenting
Non-H2S Producing
Oxidase-Negative
Day Care Centers
Pork
Raw Milk
Pet (Puppy) Feces
Signs and Symptoms
Bloody Diarrhea
Mesenteric Adenitis
Granulomatous Microabscess in Mesenteric Lymph Nodes
Pseudoappendicitis (Mimics)
Reactive Arthritis
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2 mins
Salmonella Overview
Pathophysiology
Gram-Negative Rod
Oxidase Negative
Non Lactose Fermenter
White on Macconkey Agar
H2S Producing
Flagella
Invades GI Tract
Peyer's Patches
Considerations
Osteomyelitis in Sickle Cell Patients
Reactive Arthritis
Antibiotics Prolong Fecal Excretion
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3 mins
Salmonella Enterica Spp.
Characteristics
Animal and Human Reservoir
Poultry and Eggs
Turtles
PMN Immune Response
Symptoms
Gastroenteritis
Diarrhea
Possibly Bloody
Treatments
No Antibiotics
No Vaccine Available
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2 mins
Klebsiella Characteristics
Characteristics
Gram-Negative
Bacilli
Oxidase-Negative
Intestinal Flora
Antiphagocytic Virulence Factor
Polysaccharide Capsule
Positive Quellung Reaction
Mucoid Colonies
Urease-Positive
Fast Lactose Fermenter
Pink on MacConkey Agar
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2 mins
Proteus Mirabilis
Characteristics
Gram-Negative
Bacillus
Oxidase Negative
Urease-Positive
Swarming Motility
Non-lactose Fermenting
Symptoms
Urinary Tract Infection
Struvite Crystals
Staghorn Kidney Stones
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2 mins
Helicobacter Pylori
Characteristics
Gram-Negative
Bacilli
Curved
Polar Flagellum
Catalase-Positive
Oxidase-Positive
Disease
Gastric and Duodenal Ulcers
Ammonia
Neutral Environment
Gastric Adenocarcinoma
MALT lymphoma
Diagnosis
Serology IgG antibody
Stool Antigen
Urease Positive Breath Test
Biopsy
Treatment
2 ABX and PPI
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2 mins
Helicobacter pylori Associations
Gastritis
Peptic Ulcer Disease
Stomach Cancer
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50 secs

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