Table 3. Univariate analysis of risk factors for persistent atrial communication.
| Risk Factor | Odds Ratio | 95% CI | p |
|---|---|---|---|
| Patient age (per year) | 1.2 | 0.9-1.6 | 0.12 |
| Diagnosis | |||
| Congenital heart disease | 1 | n/a | n/a |
| Myocarditis | 0.8 | 0.05-10.2 | 0.83 |
| Other | 0.5 | 0.04-7.1 | 0.61 |
| Weight (per kg) | 1.0 | 1.0-1.1 | 0.42 |
| Height (per 10 cm) | 1.2 | 0.9-1.6 | 0.18 |
| Balloon type | |||
| Low pressure | 1 | n/a | n/a |
| Medium pressure | 0.4 | 0.02-8.1 | 0.56 |
| High pressure | 0.08 | 0.003-2.6 | 0.16 |
| Maximal balloon pressure (per mmHg) | 0.8 | 0.4-1.5 | 0.49 |
| Maximal balloon diameter (per mm) | 1.2 | 0.9-1.8 | 0.25 |
| Maximal balloon diameter normalized to body surface area (per mm/sqm) | 1.0 | 0.9-1.0 | 0.48 |
| Initial size of defect (per mm) | 1.9 | 0.8-4.6 | 0.14 |
| Initial LA pressure (per mmHg) | 1.0 | 0.9-1.2 | 0.56 |
| Initial LA to RA pressure gradient (per mmHg) | 1.1 | 0.8-1.4 | 0.55 |
| Time on ECMO before creation of ASD (per day) | 0.6 | 0.11-3.2 | 0.54 |
| Total duration of ECMO (per day) | 1.1 | 0.8-1.4 | 0.70 |