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Table 2 Shunt grading using both transcranial doppler ultrasonography and transesophageal echocardiography

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

SHUNT TEE (N= 220 pts – TEE and TCD positive) TCD (N= 220 pts – TEE and TCD positive) % of the same grading using both methods
Small 56 (25.5%) 70 (31.8%) 62.1
Medium 123 (55.9%) 119 (54.1%) 68.3
Large 41 (18.6%) 31 (14.1%) 83.2
  1. TCD Transcranial Doppler Ultrasonography, TEE Transesophageal Echocardiography.