Table 1

Studies of patients with symptomatic carotid stenosis of less than or equal to 50%

StudyPatients undergoing CEA (n)Age, mean±SD% maleDegree of stenosis, mean±SDPatients with recurrent events prior to CEA, n (%)Preoperative imaging studies usedPatients with major perioperative complications, n (%)*Patients with available follow-up, n (% who underwent CEA)Follow-up in months, mean±SDPatients with recurrent ischaemic events (n)Patients with restenosis, n (%)
Yoshida et al17774.2±5.685.727.1±9.97 (100)DSA, CTA, MRA0 (0.0)7 (100)19.1±14.60NR
Ballotta et al185774.6±2.866.7NR21 (36.8)US0 (0.0)55 (96.5)32.0±5.001 (1.8)
Yoshida et al191772.9±4.994.131.6±9.8NRDSA, CTA0 (0.0)14 (82.4)71.0±35.400
Takai et al201468.3 ± 7.710027.2±10.7NRDSANR14 (100)38.2±15.900
Kashiwazaki et al211672.8±6.310037.2±10.6NRCTA2 (11.8)†16 (100)38.5±13.300
Nardi et al223269.6±±12.623 (74.1)CTA, MRA0 (0.0)32 (100)27.3±27.700
  • *Defined as MRI findings of ischaemic stroke or permanent neurological deficit.

  • †Ischaemic changes were within the hemisphere contralateral to endarterectomy in both patients.

  • CEA, carotid endarterectomy; CTA, CT angiography; DSA, digital subtraction angiography; MRA, magnetic resonance angiography; NR, not reported; US, ultrasound.