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Comparison of the diameter and tunnel length of PFO with different shunts.
| Mild | Severe | t | p | |
|---|---|---|---|---|
| The diameter of PFO right entrance (mm) | 2.0 ± 0.7 | 2.8 ± 1.0 | 3.135 | <0.05 |
| The diameter of PFO left exit (mm) | 1.6 ± 0.4 | 2.2 ± 0.7 | −2.582 | <0.05 |
| The tunnel length of PFO (mm) | 9.3 ± 2.7 | 9.4 ± 2.9 | 1.358 | >0.05 |
PFO: patent foramen ovale.
