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Table 3 Identification of persistent for amen ovale using both transcranial color doppler and transesophageal echocardiography

From: Transcranial doppler ultrasonography should it be the first choice for persistent foramen ovale screening?

Clinical characteristics of patients Identification of PFO (both TCD and TEE)
  Patients (n = 420) Patients (n = 220)
TIA 218 (51.9%) 106/218 (48.6%)
Migraine 67 (15.6%) 7/67 (10.4%)
Migraine with aura 50 (11.9%) 38/50 (76.0%)
Cryptogenic stroke 88 (20.9%) 69/88 (78.4%)
  1. PFO Patent Foramen Ovale, TCD Transcranial Doppler Ultrasonography, TEE Transesophageal Echocardiography, TIA Transient Ischaemic Attack.