Table 2

Performance of self-reported best practice procedure components for CMS facilities (n=22)

Best practiceNon-CREST participants (%)
CREST participants (%)
mRS pre-stent3267
NIHSS pre-stent74100
DSA including head and neck pre-stent74100
Electronic calliper determination of per cent stenosis21100
Measure per cent stenosis using NASCET criteria63100
Embolic protection device use90100
DSA including head and neck post-stent68100
Treated with antiplatelet dual regimen79100
ACT >250 s47100
NIHSS 24 hours post-stent74100
~30-day post-stent neurological assessment79100
~30-day post-stent follow-up mRS58100
~30-day post-stent follow-up NIHSS58100
~30-day post-stent outcomes stroke and death68100
~30-day non-invasive study5867
Benchmark for stroke and death42100
Overall 62 100
  • ACT, activated clotting time; CMS, Centers for Medicare and Medicaid Services; CREST, Carotid Revascularisation and Medical Management for Asymptomatic Carotid Stenosis Study Trial; DSA, digital subtracted angiography; mRS, Modified Rankin Scale; NASCET, North American Symptomatic Carotid Endarterectomy Trial; NIHSS, National Institute of Health Stroke Scale.