Subjective symptoms and objective variables of preintervention, postintervention, and followup. Values other than NYHA functional class are expressed as mean ± SD. NYHA functional class is presented as the median and number of patients in each class.
| Preintervention, n = 14 | Postintervention, n = 13 | Followup, n = 13 | |
|---|---|---|---|
| NYHA functional class (I/II/III/IV) | 3 (0/8/6) | 1 (7/5/1/0)* | 2 (5/6/2/0)† |
| 6-min walk distance, m | 232.3 ± 63.4 | 452.9 ± 137.7* | 445.0 ± 143.7† |
| Echocardiography | |||
| LVDD, mm | 37.9 ± 4.0 | 39.3 ± 5.1 | 41.7 ± 6.0 |
| LVEF, % | 63.7 ± 7.7 | 62.4 ± 5.3 | 64.5 ± 8.9 |
| sPAP, mmHg | 94.2 ± 14.8 | 66.6 ± 14.5* | 66.1 ± 14.2† |
| mPAP, mmHg | 47.0 ± 7.1 | 34.3 ± 4.9* | 34.2 ± 4.9† |
| RVD, mm | 37.9 ± 5.5 | 34.8 ± 5.2 | 34.6 ± 5.2 |
| Arterial blood gas analysis | |||
| Arterial oxygen saturation, % | 88.2 ± 5.0 | 94.3 ± 2.6* | 94.5 ± 2.5† |
| Arterial partial pressure of oxygen, mmHg | 67.6 ± 7.3 | 82.9 ± 5.1* | 83.8 ± 5.9† |
| Arterial partial pressure of carbon dioxide, mmHg | 35.7 ± 3.4 | 37.5 ± 3.2 | 36.9 ± 3.5 |
↵* Compared with preintervention, p < 0.01;
↵† Compared with preintervention, p < 0.01 and compared with post-intervention, p > 0.05. NYHA: New York Heart Association; LVDD: left ventricular end diastolic diameter; LVEF: left ventricular ejection fraction; sPAP: systolic pulmonary arterial pressure measured by echocardiography; mPAP: mean pulmonary arterial pressure measured by echocardiography; RVD: right ventricular diameter.