This change is supported by UWorld Step 1 11837 (this is where I got info that is in the *note in extra)
Thought about doing this as well, originally just went with what FA emphasized but I think this is a better change
AMBOSS is confusing me with this, has conflicting info: says “Supplied by the AV nodal artery (posterior descending artery of right coronary artery)” on https://next.amboss.com/us/article/zo0reS?q=av+node#Z000838c1249fec206b77360ff0adc110
but then also says its a direct branch of the RCA here https://next.amboss.com/us/article/Up0bKS
Yeah think we can just stick with UWorld and FA for this. There’s a ton of variability technically and I’m sure it originates from the PDA in somebody haha. First Aid I’m pretty sure corrected this from PDA to RCA for what it’s worth