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Comparison of NYHA Grades Before and After Embolization in 43 Patients with PAVMs
| NYHA grade | ||||
|---|---|---|---|---|
| I | II | III | IV | |
| Pre-operation | 12 | 22 | 9 | 0 |
| Post-operation | 28 | 11 | 4 | 0 |
Wilcoxon test showed a significant decrease in the post-operative NYHA grade (Z = 3.2998; p = 0.0010)
