About Medservatory
One concept, five minutes, every source on the page.
Medservatory is a free study resource for medical students preparing for USMLE Step 1 and Step 2 CK. We make short video lessons that are drawn by hand on a notebook page, so you can watch an idea being built rather than read a slide about it.
What a lesson is
Each lesson has one learning objective, the kind you could write on the top of an index card: read an arterial blood gas, predict how afterload reshapes the pressure–volume loop, decide what to do in the first ten minutes of chest pain. The video runs for about five minutes and follows the same shape every time: a patient or puzzle, the model you need, the mechanism step by step, an original exam-style question, and a short recap.
On this website, each lesson also has a written version you can search and skim, the practice question with an explanation for every option, a one-page recap to print, the full transcript, and the list of sources it was built from.
Why it exists
Most exam resources either compress everything into lists or bury one idea in an hour of lecture. We wanted the middle: the explanation a good tutor gives at a whiteboard, with the numbers the exam actually uses and the traps it actually sets, and nothing else.
What is here now
157 lessons in three series: acid–base and the arterial blood gas, the left ventricular pressure–volume loop (Step 1), and acute chest pain in the emergency department (Step 2 CK). New series are added every week. PLAB and UKMLA lessons are in preparation.
How we keep it accurate
Every claim in a lesson is tied to a source, and each lesson goes through independent accuracy checks before it is published. The method, and our corrections policy, are set out in How lessons are made.
Free, and independent
The lessons are free to watch and use, with no account. Medservatory is not affiliated with or endorsed by USMLE, NBME, FSMB, the GMC or any exam body, publisher or medical school. Exam names are used only to describe what a lesson covers.
Who runs it
Medservatory is a project of ADMR Solutions Ltd, a company registered in England and Wales (company number 16255251), 124 City Road, London, EC1V 2NX, United Kingdom. You can reach us at info@medservatory.com.