Table 3. Comparison of PV loop measurements in different NYHA classes.
| NYHA I | NYHA II | NYHA III | |
|---|---|---|---|
| Group# | 1 (n = 5) | 2 (n = 23) | 3 (n = 8) |
| RVEDV (ml/m2) | 144.04 ± 96.66 | 172.89 ± 90.89 | 285.10 ± 199.03 |
| RVESV (ml/m2) | 74.16 ± 50.20 | 97.35 ± 73.78 | 184.39 ± 142.42 |
| RVSV (ml/m2) | 69.90 ± 47.69 | 75.54 ± 33.63 | 100.71 ± 75.63 |
| RVEF (%) | 48.50 ± 7.35 | 48.02 ± 15.53 | 38.55 ± 14.08 |
| LVEDV (ml/m2) | 92.88 ± 21.54 | 102.80 ± 46.70 | 119.05 ± 59.73 |
| LVESV (ml/m2) | 41.24 ± 20.34 | 44.79 ± 26.53 | 61.31 ± 35.82 |
| LVSV (ml/m2) | 51.66 ± 7.26 | 58.00 ± 25.58 | 57.85 ± 28.17 |
| LVEF (%) | 57.06 ± 10.37 | 57.55 ± 10.36 | 50.53 ± 10.50 |
| RVEDP (mmHg) | 7.40 ± 3.36 | 9.61 ± 4.31 | 13.75 ± 7.44* |
| RVESP (mmHg) | 45.38 ± 28.01 | 91.37 ± 29.62** | 93.45 ± 30.56** |
| RVEa (mmHg/ml/m2) | 0.56 ± 0.34 | 1.25 ± 0.63 | 1.33 ± 1.00 |
| RVEes (mmHg/ml/m2) | 0.93 ± 0.87 | 1.46 ± 0.80 | 1.65 ± 1.36 |
| RVEes/Ea | 1.58 ± 0.64 | 1.20 ± 0.48 | 1.21 ± 0.53 |
Data given as the Mean ± SD. * &**p < 0.05 &p < 0.01, compared to group #1. RVEDV, right ventricular end-diastolic volume; RVESV, right ventricular end-systolic volume; RVSV, right ventricular stroke volume; RVEF, right ventricular ejection fraction; LVEDV, left ventricular end-diastolic volume; LVESV, left ventricular end-systolic volume; LVSV, left ventricular stroke volume; LVEF, left ventricular ejection fraction; RVEDP, right ventricular end-diastolic pressure; RVESP, right ventricular end-systolic pressure; RVEa, right ventricular arterial elastance; RVEes, right ventricular end-systolic elastance.