Quick Flashcards

Gram-Positives (Purple)

  • IF Bamboo-shaped + Medusa Head + Non-motile THEN B. anthracis

  • IF Umbrella motility + Cold (4°C) + Actin rockets THEN Listeria monocytogenes

  • IF Club-shaped + Gray Pseudomembrane + Bull neck THEN C. diphtheriae

  • IF Filamentous + Catalase NEGATIVE + Vaginal flora THEN Lactobacillus

The "Fastidious" (Fussy)

  • IF Satellite phenomenon + Needs X and V factors THEN H. influenzae

  • IF School of fish + Painful ulcer + Needs X Only THEN H. ducreyi

  • IF Mercury drop colonies + Whooping cough THEN B. pertussis

  • IF Undulant fever + Livestock + Urease (+) THEN Brucella

The Enterics (GNR / Oxidase Negative)

  • IF Metallic Green sheen on EMB + Indole (+) THEN E. coli

  • IF Mucoid/Snotty + Non-motile + Currant jelly sputum THEN K. pneumoniae

  • IF Red pigment (room temp) + DNAse (+) THEN Serratia marcescens

  • IF Swarming rings + Burnt chocolate smell + Urea (+) THEN Proteus mirabilis

  • IF H2S Positive (Black) + Motile + Gallbladder THEN Salmonella Typhi

  • IF H2S Negative (Clear) + Non-motile + Bloody stool THEN Shigella

  • IF Safety pin stain + Fleas + Fried egg colony THEN Yersinia pestis

Non-Fermenters & Curved (Oxidase Positive)

  • IF Blue-Green pigment + Grapes/Taco smell + CF/Burns THEN P. aeruginosa

  • IF Yellow on TCBS + Rice-water stool + String test (+) THEN V. cholerae

  • IF Green on TCBS + Needs Salt (Halophilic) THEN V. parahaemolyticus

  • IF Hemorrhagic bullae (bloody blisters) + Liver disease THEN V. vulnificus

  • IF 42°C (Heat) + Seagull wings + Poultry THEN C. jejuni

  • IF Strong Urease (+) + Gastric ulcers THEN H. pylori

🧪

The "Must-Know" Culture Media (Last Look)

  1. TCBS: Vibrio (Yellow=Cholera, Green=others)

  2. Bordet-Gengou: Bordetella pertussis

  3. Chocolate Agar: Neisseria and Haemophilus

  4. BCSA: Burkholderia (Dirt smell)

  5. EMB: E. coli (Green Sheen)