Diagnosis | Incidence | Associated lesions | ||||
---|---|---|---|---|---|---|
Normal V̇D | Normal slope V̇E v V̇co2 | Abnormal V̇D | Abnormal slope V̇E v V̇co2 | Abnormal V̇D | Normal V̇D | |
*p<0.05 | ||||||
Abnormal values are defined as values which exceeded the 95% confidence limits of the normal mean value. The incidence of subnormal values was significantly higher in all patient groups (χ2: p<0.0001) compared to normal controls. | ||||||
AV valve insuf, atrioventricular insufficiency; PR, pulmonary regurgitation; PS, pulmonary stenosis; RV dil, right ventricular dilatation; slope V̇EvV̇co2, slope of ventilation versus carbon dioxide output; TI, tricuspid incompetence; V̇D, physiological dead space ventilation. | ||||||
TF (n = 34) | 18 (53%) | 23 (68%) | 16 (47%) | 11 (32%) | PR 10/16 (62%)* | PR 5/18 (28%) |
PS 8/16 (50%)* | PS 3/18 (17%) | |||||
TGA (n = 23) | 8 (35%) | 8 (39%) | 15 (65%) | 14 (61%) | RV dil+TI 5/15 (33%)* | RV dil+TI 1/18 (12%) |
Fontan (n = 13) | 5 (38%) | 5 (38%) | 8 (62%) | 8 (62%) | AV valve insuf 8/13 (61%)* | AV valve insuf 1/5 (20%) |