Ventilation and Perfusion26 minutes

Here's a sample video from our pulmonary section. In this one, Dr. Ryan goes over the A-a gradient, plus shunts and V/Q mismatch. Check it out, and see how you can study smarter for the USMLE Step 1 exam.

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Shunt; dead space; V/Q mismatch. First Aid 2017: 634; First Aid 2018: 651; First Aid 2019: 655

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Evidenced-based Medicine
We have added a new video on Evidenced-based Medicine to our Biostats/Epi section.
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2019 Edition Books
We have released new editions of all of our printed books of Dr. Ryan's slides for 2019.
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