Can anyone help explain how to get to this answer?

Please submit your cardio/pulm questions for Premium Office Hours with the fabulous Dr. Gloria for this upcoming Tuesday (3/10) at 6PM EST under this post! Thank you!

Quick reminder: if you’re interested in even more Office Hours, be sure to check out the VIP Office Hours under the calendar tab. These are highly exclusive sessions, with currently only one other member, and the topics are completely up to you. Here’s our Premium Office Hours schedule for this month: • 3/3 — GI/GU with the fabulous Dr. David • 3/10 — Cardio/pulm with the wonderful Dr. Gloria • 3/17 — General (all topics welcome) ***FREE TO ATTEND FOR ALL*** • 3/24 — Pathology review with the wonderful Dr. Gloria (Pathology Resident) • 3/31 — Neuro/psych with the fabulous Dr. David

Just some more questions to go over! Yay!