Table 6.

Frequency of additional echocardiographic features of PH in 18 SCA subjects with PH

Parameter	Frequency, n (%)
Flat/left bulging IVS only	6 (33.3)
Dilated MPA+flat/left bulging IVS	5 (27.8)
IVC collapsibility index <50% only	3 (16.6)
IVC collapsibility index <50%+flat/left bulging IVS	2 (11.1)
Dilated MPA+IVC collapsibility index <50%	1 (5.6)
Dilated MPA alone	1 (5.6)
Total present	18 (100)

IVS: interventricular septum; MPA: main pulmonary artery.