Table 4.

Right atrial structure and function

Variable	Current user Mean ± SD	Past user Mean ± SD	Non-user Mean ± SD
RA Area (cm)	19 ± 4a	17 ± 3	15 ± 3
RA Area Index (cm2 m−2)	8 ± 1	8 ± 2	12 ± 18
RA reservoir strain (%)	36 ± 10a	43 ± 14	44 ± 13
RA conduit strain (%)	25 ± 8a	31 ± 14	33 ± 10
RA booster strain (%)	12 ± 5	13 ± 6	13 ± 5

RA right atria

^aDenotes significance < 0.05 between current users and non-users