ECG

A systematic read, working calipers, and a rhythm-by-rhythm library from sinus to the arrests.

Laboratory medicine

Whole panels with flags and trends: anemia, liver patterns, electrolytes, and what each one means.

Blood gases

Stepwise acid-base with every formula on the page: gap, delta-delta, and Winter's expected PaCO2.

Pulmonary function

Spirometry, lung volumes, and DLCO, plus the loop silhouettes you are meant to recognize at a glance.

Urine & body fluids

Dipstick and sediment, urine electrolytes, and the CSF, pleural, ascitic, and synovial decision rules.

Ward cases

Longitudinal patients with a real chart who deteriorate, improve, and answer back as you decide.

Image: Mikael Häggström, M.D. Author info - Reusing images- Conflicts of interest: None Mikael Häggström, M.D.Consent note: Wri, via Wikimedia Commons · CC0

On the wards

Morning rounds, overnight pages, handover, documentation, and everything that has to be true to discharge.

Pediatrics

Age-adjusted vitals, growth and development, the newborn, presentations by age, the deteriorating child, and the pediatric ward.

Specialties

Fourteen divisions of internal medicine, each with its own presentations, tracings, and reference material.

Image: BCCD blood cell dataset (Shenggan) · MIT

Practice

ECG, lab, gas, and PFT challenges, What's Abnormal mode, and a five-minute ward for a coffee break.

Image: The POCUS Atlas (thepocusatlas.com) · CC BY-NC 4.0

Learn the method

Problem representation, differential building, physiology, and how to present what you found on rounds.

Image: Aaron G. Filler MD PhD (Afiller), via Wikimedia Commons · CC BY-SA 3.0

Reference

Normal values, validated calculators with their references, interactive algorithms, and illness scripts.

Medications

Class cards built the way you use them: mechanism, the harms that matter, and what to monitor.