Table 3.
Normal reference values for the right ventricular modified myocardial performance index and its components throughout gestation.
| GA (weeks) |
Mod-MPI | ICT (ms) | IRT (ms) | ET (ms) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5th percentile | 10th percentile | 50th percentile | 90th percentile | 95th percentile | 5th percentile | 10th percentile | 50th percentile | 90th percentile | 95th percentile | 5th percentile | 10th percentile | 50th percentile | 90th percentile | 95th percentile | 5th percentile | 10th percentile | 50th percentile | 90th percentile | 95th percentile | |
| 16 | 0.34 | 0.36 | 0.45 | 0.56 | 0.59 | 17.3 | 21.4 | 34.3 | 47.2 | 51.3 | 33.6 | 34.8 | 39.4 | 44.3 | 45.8 | 150.8 | 154.2 | 164.6 | 174.3 | 177.2 |
| 17 | 0.34 | 0.37 | 0.46 | 0.56 | 0.60 | 18.3 | 22.4 | 35.3 | 48.2 | 52.3 | 33.9 | 35.1 | 39.8 | 44.8 | 46.3 | 150.7 | 154.1 | 164.6 | 174.4 | 177.4 |
| 18 | 0.35 | 0.37 | 0.46 | 0.57 | 0.60 | 19.2 | 23.3 | 36.2 | 49.1 | 53.2 | 34.1 | 35.4 | 40.1 | 45.3 | 46.9 | 150.6 | 154.1 | 164.7 | 174.6 | 177.6 |
| 19 | 0.36 | 0.38 | 0.47 | 0.58 | 0.61 | 20.0 | 24.1 | 37.0 | 49.9 | 54.0 | 34.4 | 35.7 | 40.5 | 45.8 | 47.4 | 150.6 | 154.1 | 164.8 | 174.8 | 177.9 |
| 20 | 0.36 | 0.38 | 0.48 | 0.58 | 0.61 | 20.7 | 24.8 | 37.7 | 50.6 | 54.7 | 34.6 | 36.0 | 41.0 | 46.4 | 48.0 | 150.6 | 154.2 | 165.0 | 175.1 | 178.2 |
| 21 | 0.36 | 0.39 | 0.48 | 0.59 | 0.62 | 21.3 | 25.4 | 38.3 | 51.2 | 55.3 | 34.9 | 36.3 | 41.4 | 46.9 | 48.6 | 150.7 | 154.3 | 165.2 | 175.5 | 178.6 |
| 22 | 0.37 | 0.39 | 0.49 | 0.59 | 0.62 | 21.7 | 25.8 | 38.8 | 51.7 | 55.8 | 35.2 | 36.6 | 41.8 | 47.4 | 49.1 | 150.8 | 154.4 | 165.5 | 175.9 | 179.0 |
| 23 | 0.37 | 0.39 | 0.49 | 0.59 | 0.62 | 22.0 | 26.1 | 39.0 | 52.0 | 56.1 | 35.4 | 36.9 | 42.2 | 48.0 | 49.7 | 150.9 | 154.6 | 165.8 | 176.3 | 179.4 |
| 24 | 0.37 | 0.40 | 0.49 | 0.59 | 0.62 | 22.2 | 26.3 | 39.2 | 52.1 | 56.2 | 35.7 | 37.2 | 42.6 | 48.6 | 50.3 | 151.0 | 154.8 | 166.1 | 176.7 | 179.9 |
| 25 | 0.37 | 0.40 | 0.49 | 0.59 | 0.62 | 22.1 | 26.2 | 39.1 | 52.0 | 56.1 | 36.0 | 37.5 | 43.0 | 49.1 | 51.0 | 151.2 | 154.9 | 166.4 | 177.1 | 180.4 |
| 26 | 0.37 | 0.40 | 0.50 | 0.59 | 0.62 | 22.0 | 26.1 | 39.0 | 51.9 | 56.0 | 36.2 | 37.8 | 43.5 | 49.7 | 51.6 | 151.3 | 155.1 | 166.8 | 177.6 | 180.9 |
| 27 | 0.37 | 0.40 | 0.50 | 0.59 | 0.62 | 21.8 | 25.9 | 38.8 | 51.7 | 55.8 | 36.5 | 38.1 | 43.9 | 50.3 | 52.2 | 151.5 | 155.3 | 167.1 | 178.1 | 181.4 |
| 28 | 0.37 | 0.40 | 0.50 | 0.59 | 0.62 | 21.7 | 25.8 | 38.7 | 51.6 | 55.7 | 36.8 | 38.4 | 44.3 | 50.9 | 52.8 | 151.6 | 155.5 | 167.4 | 178.5 | 181.9 |
| 29 | 0.37 | 0.40 | 0.50 | 0.59 | 0.62 | 21.7 | 25.8 | 38.7 | 51.6 | 55.7 | 37.1 | 38.7 | 44.8 | 51.5 | 53.5 | 151.7 | 155.7 | 167.7 | 178.9 | 182.3 |
| 30 | 0.38 | 0.41 | 0.50 | 0.60 | 0.62 | 21.7 | 25.8 | 38.7 | 51.6 | 55.7 | 37.3 | 39.0 | 45.2 | 52.1 | 54.1 | 151.7 | 155.7 | 167.9 | 179.2 | 182.6 |
| 31 | 0.38 | 0.41 | 0.50 | 0.60 | 0.63 | 21.7 | 25.8 | 38.7 | 51.6 | 55.7 | 37.6 | 39.3 | 45.7 | 52.7 | 54.8 | 151.6 | 155.6 | 168.0 | 179.4 | 182.9 |
| 32 | 0.39 | 0.41 | 0.51 | 0.60 | 0.63 | 21.7 | 25.8 | 38.7 | 51.6 | 55.7 | 37.9 | 39.6 | 46.1 | 53.3 | 55.5 | 151.3 | 155.4 | 167.9 | 179.4 | 182.9 |
| 33 | 0.39 | 0.42 | 0.51 | 0.61 | 0.64 | 21.6 | 25.7 | 38.6 | 51.6 | 55.7 | 38.1 | 39.9 | 46.6 | 53.9 | 56.2 | 150.9 | 155.0 | 167.6 | 179.3 | 182.7 |
| 34 | 0.40 | 0.42 | 0.52 | 0.61 | 0.64 | 21.5 | 25.6 | 38.5 | 51.4 | 55.5 | 38.4 | 40.2 | 47.0 | 54.6 | 56.8 | 150.4 | 154.5 | 167.2 | 178.9 | 182.4 |
| 35 | 0.40 | 0.43 | 0.52 | 0.62 | 0.65 | 21.3 | 25.4 | 38.3 | 51.2 | 55.3 | 38.7 | 40.5 | 47.5 | 55.2 | 57.6 | 149.7 | 153.9 | 166.7 | 178.5 | 182.0 |
| 36 | 0.41 | 0.43 | 0.52 | 0.62 | 0.65 | 21.1 | 25.2 | 38.1 | 51.0 | 55.1 | 39.0 | 40.8 | 48.0 | 55.9 | 58.3 | 149.0 | 153.2 | 166.0 | 177.9 | 181.5 |
| 37 | 0.42 | 0.44 | 0.53 | 0.63 | 0.66 | 20.8 | 24.9 | 37.8 | 50.8 | 54.8 | 39.2 | 41.2 | 48.4 | 56.5 | 59.0 | 148.1 | 152.4 | 165.3 | 177.2 | 180.8 |
| 38 | 0.42 | 0.45 | 0.53 | 0.64 | 0.67 | 20.6 | 24.7 | 37.6 | 50.5 | 54.6 | 39.5 | 41.5 | 48.9 | 57.2 | 59.7 | 147.3 | 151.6 | 164.5 | 176.5 | 180.1 |
Mod-MPI, modified myocardial performance index; ICT, isovolumetric time; IRT, isovolumetric relaxation time; ET, ejection time.