Editing Renal artery stenosis (section)

== Presentations ==

* Incidental
* Systemic HTN and worsening renal function
** Guidelines suggest screening for RAS as part of a secondary HTN workup if resistant HTN (on three anti-HTNs and SBP>180), HTN at <30yo, sudden worsening of HTN, or discrepant kidney length on imaging.
** Duplex USS is best first test. Normal peak systolic velocity should be 60-100cm/sec in renal arteries