Here's a sample video from our pulmonary section. Is this video, Dr. Ryan goes over the A-a gradient plus shunts and V/Q mismatch.
Hovering over the video while it is playing will give you options to control the playback speed and quality. Press ? at any time to see keystrokes for video playback changes
Shunt, dead speace, V/Q mismatch. First Aid 2017: 634; First Aid 2018: 651; First Aid 2019: 655