Monitoring
Close follow-up is required until adequate BP is achieved.
Home BP monitoring is very helpful in assessing response to therapy.
Periodic measurements (every 3 to 6 months) of creatinine and electrolytes are recommended. These are also important 2 to 4 weeks after adjusting doses of diuretics, ACE inhibitors, or angiotensin II receptor antagonists.
If there are clinical changes or if the hypertension becomes uncontrolled, it is reasonable to obtain evaluation studies (invasive or non-invasive) to assess for progression of RAS.
Surveillance Duplex ultrasonography may be useful in detecting re-stenosis early after the procedure (up to 1 year). Primary patency rates after stenting are 80% to 85%; secondary patency rates are 92% to 98%. Almost all occurrences of re-stenosis occur during the first year after stent implantation.[2]
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