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A comparison between plasma BNP levels and cardiac function classification in patients with dilated cardiomyopathy
| Cardiac function classification | n | BNP (pg/ml) |
| I | 5 | 266.67±122.56 |
| II | 16 | 588.47±432.57 |
| III | 20 | 1 145.91±429.65 |
| IV | 9 | 2 414.16±787.27 |
r=0.84, P<0.01
