PUNCH & PVNCH! (Urease & oxidase +ve Organisms) - USMLE Forums
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USMLE Step 1 Mnemonics Mnemonics, acronyms, reminders, and memorizing tips for the USMLE Step 1.

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Old 12-19-2010
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Bacteria PUNCH & PVNCH! (Urease & oxidase +ve Organisms)

Every one knows the famous mnemonic for urease positive organisms = PUNCH

P = Proteus

U = Ureaplasma

N = Nocardia

C = Cryptococcus

H = H.pylori

so it would be easy to remember the important oxidase positive organisms if we replace "U" of PUNCH by "V"

so PVNCH for Oxidase positive organisms;

P = Pseudomonas

V = Vibrio

N = Nisseria

C = Compylobacter

H = H.pylori

(Also don't forget that most gram negatives in general are Oxidase positive minus enterobacteriacea family)
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