Sydney Shared "GI Bugs" - 28 Picmonics

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GI Bugs

E. coli Overview
Characteristics
Gram-Negative
Bacillus
Purple Colony with Metallic Green Sheen
Lactose-Fermenting
Pink on MacConkey Agar
Disease
Diarrhea
Lipid A Septic Shock
P Pili Pyelonephritis and Cystitis
K Capsule Neonatal Meningitis
K Capsule Pneumonia
H Antigen Flagella
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2 mins
Vibrio Cholera Disease
ADP ribosylating AB toxin
Turn Gs on causing increase in cAMP
Secretion of Cl
Blocks reabsorption of Na
Rice water diarrhea
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1 min
Vibrio Cholera Characteristics
Gram-Negative
Bacilli
Glucose fermenting
Non-lactose fermenting
Oxidase positive
Comma Shaped
Thrives in alkaline environment
Crustaceans
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1 min
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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2 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
Salmonella Typhi
Characteristics
Colonizes Gallbladder
Monocytic Immune Response
Symptoms
Typhoid Fever
Abdominal Pain
Rose Spots on Abdomen
Constipation Followed by Diarrhea
Treatments
Ceftriaxone
Fluoroquinolones
Considerations
Oral Vaccine - Live
IM Vaccine - Capsular Polysaccharide
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2 mins
Shigella
Characteristics
Gram-Negative
Bacilli
Non Lactose Fermenting
White on Macconkey Agar
Oxidase Negative
Non H2S Producing
Day Care Centers
High Virulence
Replicates Intracellularly
Actin Rocket
Signs and Symptoms
Bloody Diarrhea
Shiga Toxin
Inhibits 60S Ribosome
Hemolytic Uremic Syndrome (HUS)
Hemolytic Anemia
Thrombocytopenia
Kidney Failure
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3 mins
Campylobacter Jejuni
Characteristics
Gram-Negative
Bacillus
Flagella
Curved
Corkscrew Appearance
Oxidase-Positive
Grows Well at 42 Degrees
Undercooked Poultry
Unpasteurized Milk
Puppies with Diarrhea
Signs and Symptoms
Bloody Diarrhea
Guillain-Barre syndrome
Reiter's Syndrome or Reactive Arthritis
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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)
Reiter's Syndrome or Reactive Arthritis
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2 mins
Clostridium difficile
Characteristics
Gram-Positive
Bacillus
Anaerobe
Clindamycin and Ampicillin
Toxin A Enterotoxin
Damages Brush Border of Gut
Toxin B Cytotoxin
Damages Cytoskeletal Structure
Signs and Symptoms
Diarrhea
Pseudomembranous Colitis
Toxic Megacolon
Diagnosis
Detect Toxins in Stool
Treatment
Metronidazole
Vancomycin
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3 mins
Clostridium difficile (Clostridioides difficile) Treatments
Oral Vancomycin
Fidaxomicin
Metronidazole
Stool Transplant
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2 mins
Listeria Monocytogenes Characteristics
Characteristics
Gram Positive
Bacillus
Intracellular
Survives in Cold Temperature
Actin Rocket
Tumbling Motility
Catalase-Positive
Beta-Hemolytic
Only Gram-Positive with Endotoxin-Like Structure
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2 mins
Listeria Monocytogenes Disease
Signs and Symptoms
Soft Cheese
Pregnant Women Have Flu-Like Symptoms
Pregnant Women Have GI Symptoms
Granulomatosis Infantiseptica
Spontaneous Abortion
Meningitis
Monocytes in CSF
Treatment
Ampicillin
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2 mins
Guillain-Barre Syndrome Assessment
Assessment
Ascending Paralysis
Muscle Weakness
Paresthesias (Pins and Needles)
Diplopia
Difficulty Speaking
Dysphagia
Labile Blood Pressure
Loss of Bowel and Bladder Control
Considerations
Aggressive Airway Management
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2 mins
Rotavirus
Characteristics
Reovirus
Non-enveloped
Double-Stranded
RNA Virus
Linear
11 Segments
Triple Icosahedral Capsid
Most Common Cause of Diarrhea Worldwide
Villous Atrophy
Winter Months
Day Care Centers
Treatment
Oral Rehydration
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2 mins
Norovirus
Characteristics
Calicivirus
RNA Virus
Non-enveloped
Icosahedral
SS Positive Linear
Symptoms
Acute Gastroenteritis
Treatment
Supportive Therapy
Considerations
Often found in Cruise Ships
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1 min
Adenovirus
Characteristics
Non-enveloped
Icosahedral
Linear
Double Stranded DNA
Signs and Symptoms
Pharyngitis
Conjunctivitis
Fever
Summer Swimming
Day Care Centers
Acute Hemorrhagic Cystitis
Pneumonia
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1 min
Entamoeba histolytica
Pathophysiology
Protozoa
Amebiasis
Ingestion of Cysts in Food and Water
Signs and Symptoms
Bloody Diarrhea
Flask-Shaped Ulcer
Liver Abscess
Anchovy Paste
RUQ Pain
Diagnosis
RBCs in Cytoplasm of Trophozoite
Cyst With Four Nuclei
Treatment
Metronidazole
Iodoquinol
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3 mins
Giardia lamblia
Characteristics
Protozoa
Ingestion of Cysts
Seen in Campers
Daycare Centers
Mental Hospitals
Infects Small Intestine
Signs and Symptoms
Bloating
Flatulence
Fatty Diarrhea
Diagnosis
Crescent-shaped Protozoa Adjacent to Epithelial Brush Border
Predisposed if Low IgA
Treatment
Metronidazole
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3 mins
Cryptosporidium
Characteristics
Protozoa
Ingestion of Oocysts in Food or Water
Acid Fast Cysts
Signs and Symptoms
Outbreaks of Diarrhea from Contaminated Water Supply
Mild Disease in Non-immunocompromised
Severe Diarrhea in AIDS
Treatment
Nitazoxanide for Immunocompetent
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2 mins

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