When Step 1 went pass/fail in 2022, the conventional wisdom was that the exam mattered less. The opposite has happened. Now that there’s no numerical Step 1 score to differentiate applicants, residency programs lean harder on Step 2 CK and on whether you have any concerning fail-pattern in your transcript. Match outcomes by specialty and applicant profile are tracked annually in the NRMP Main Residency Match Results & Data report, and the post-pass/fail era has compressed how much room for error a candidate has on the rest of the application.
I built this deck for the candidate who isn’t trying to crush Step 1 — they’re trying not to fail it, while preserving energy for Step 2 prep and clinical rotations. Different goal, different deck.
Important up front: I am not a physician. These cards are built from public AAMC and USMLE outlines, First Aid, and the standard biochem/pharm/micro reference texts, then organized for spaced repetition. If you spot a factual error, please email mistakes@avorio.ai — I will fix it the same day. A credentialed co-author for this vertical is on my list of post-launch priorities.
Why a 50-card deck works for Step 1 minimum-competence
The Step 1 content outline covers more than 4,000 testable points. First-Aid alone is 800 pages. UWorld has 3,500+ questions. The temptation is to grind everything. The actual exam tests the same conceptual backbone repeatedly: pharmacology mechanism + side-effect, microbiology bug-drug, biochemistry pathway + deficiency, immunology cell + cytokine. Get the backbone solid and the long tail reads as variations.
These 50 cards are that backbone.
The composition
Pharmacology — 14 cards. Beta-blocker selectivity (cardio vs. non-selective vs. mixed), ACE inhibitor vs. ARB mechanism, statin metabolism (CYP3A4 interactions), warfarin vs. DOAC, the four anti-tubercular drugs and their characteristic toxicities, and the four antifungal mechanisms. Pharmacology is one of the heaviest-weighted disciplines on the USMLE Step 1 content outline; cards here have the highest yield-per-effort.
Microbiology bug/drug — 12 cards. S. pneumo, S. aureus (MSSA + MRSA), Strep pyogenes, Pseudomonas, Mycoplasma, Chlamydia trachomatis, Borrelia burgdorferi, Treponema pallidum, the herpesvirus family (HSV, VZV, EBV, CMV), HIV reverse transcriptase, and Plasmodium falciparum. These twelve account for an outsized share of microbiology vignettes.
Biochemistry — 8 cards. Glycolysis, gluconeogenesis (the four key enzymes that make it irreversible from pyruvate to glucose), the urea cycle (and the two enzyme deficiencies that present as ammonia toxicity), and PKU. Biochemistry is high-yield in vignette form: a kid with developmental delay → urea cycle defect or organic acidemia.
Immunology — 8 cards. T cell activation (signal 1, 2, 3), B cell class-switching, complement activation pathways (classical, alternative, lectin), and the four hypersensitivity reactions. The four hypersensitivity types (especially Type IV delayed-type) recur frequently in the immunology vignette pattern called out in the USMLE Step 1 content outline.
Pathology — 8 cards. Acute vs. chronic inflammation cell populations, the granuloma list (TB, sarcoid, fungal, foreign body), MI timeline (0-12h, 12-24h, 1-3d, 3-7d, 7-10d, 10-14d, weeks), and three high-yield neoplasia topics: oncogenes vs. tumor suppressors, the cell-cycle checkpoints, and CML’s t(9;22).
The card format — cloze deletion, not Q&A
Every card in this deck is a cloze deletion. Q&A flashcards encourage multi-fact answers (“name the four anti-tubercular drugs and their toxicities”) that fail the SuperMemo minimum-information rule, then fail in production because the spaced-repetition algorithm can only score the whole answer right or wrong.
Cloze format with multiple deletions per note solves this. The deck’s bug-drug card for Pseudomonas looks like:
{{c1::Pseudomonas aeruginosa}} pneumonia is empirically covered with
{{c2::piperacillin-tazobactam}} or {{c3::cefepime}}, often combined with
a {{c4::fluoroquinolone}} for double coverage. The signature finding
on Gram stain is a {{c5::Gram-negative rod}}.That’s one note, five cards. Each card hides one cluster while showing the other four as context. The FSRS-5 scheduler tracks ease and stability per cluster, so a candidate who reliably remembers the bug name but flubs “cefepime” gets the cefepime card pushed back to a shorter interval — automatically, without thinking about it.
Anti-tubercular drugs use the overlapping pattern for the four-drug enumeration:
The four first-line anti-tubercular drugs are {{c1::isoniazid::INH}},
{{c2::rifampin}}, {{c3::pyrazinamide::PZA}}, and {{c4::ethambutol}}.
INH's signature toxicity is {{c5::peripheral neuropathy::B6 prevents}},
ethambutol's is {{c6::optic neuritis::red-green deficit}}.Six cards from one note. The ::hint syntax disambiguates partials (red-green deficit on the optic neuritis card; B6 association on the INH card) — useful when the bare answer alone could match multiple deletions.
The pace
An eight-week run-up to the exam works well: two weeks to learn — every card seen 4-5 times. Four weeks of consolidation — the algorithm stretches intervals based on how well each card sticks. Two weeks of dense review — the FSRS scheduler will surface the cards you’re least sure on, exactly when they need refreshing.
The 50 cards aren’t a replacement for First-Aid or UWorld. They’re what you should have already memorized cold before you start UWorld questions, so that every wrong answer adds to the network instead of replacing it.
Try the first 10 below
The deck embedded below is the first 10 cards — the highest-frequency pharmacology and bug/drug pairs. If they’re already easy, your foundation is solid; you don’t need this deck. If 3 or more feel uncertain, install Avorio and load the full 50.