Clinical characteristics of the study group and results of oxygen saturation measurements
| Patient group | n | Age mean (SD) | Gender female (male) | O2 saturation upright mean (SD) | O2 saturation supine mean (SD) | p (Wilcoxon test) supine versus upright |
|---|---|---|---|---|---|---|
| PAVMs (feeding vessel > 2 mm) | 14 | 7.6 (4.6) | 6 (8) | 93.1 (8.4)* | 93.9 (6.0)* | 0.94 |
| PAVMs (feeding vessel <2 mm) | 19 | 7.7 (4.8) | 8 (11) | 99.0 (1.2) | 98.9 (1.4) | 0.98 |
| All PAVMs | 33 | 7.7 (4.6) | 14 (19) | 96.5 (6.2) | 96.7 (4.7) | 0.64 |
| Genetically confirmed HHT, no PAVM | 60 | 6.6 (5.1) | 28 (32) | 98.7 (1.0) | 98.7 (1.1) | 0.56 |
| HHT not genetically confirmed, no AVM | 116 | 6.99 (4.6) | 50 (66) | 98.6 (1.4) | 99.0 (1.1) | 0.27 |
*(p<0.01; ANOVA).
HHT, hereditary haemorrhagic telangiectasia; PAVMs, pulmonary arteriovenous malformations.