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Table 3 Healthy subjects- Right atrial parameters with significant differences with age on multivariate analysis (mean, 95% confidence interval)

From: Reference right atrial dimensions and volume estimation by steady state free precession cardiovascular magnetic resonance

  20-29 years 30-39 years 40-49 years 50-59 years 60-69 years 70-79 years
  All subjects
RA area-2 ch [cm2] SD 4.5 24 (16, 32) 23 (15, 31) 22 (14, 30) 21 (13, 29) 20 (12, 28) 19 (11, 27)
RA area/BSA- 2 ch [cm2/m2] SD 2.5 13 (9, 18) 13 (8, 17) 12 (8, 17) 12 (7, 16) 11 (6, 15) 10 (6, 15)
RA transverse diameter- 2 ch [cm] SD 0.6 5.1 (3.7, 6.4) 4.7 (3.4, 6.1) 4.4 (3.1, 5.8) 4.1 (2.8, 5.5) 3.8 (2.5, 5.2) 3.5 (2.1, 4.8)
RA transverse diameter/BSA- 2 ch [cm/m2] SD 0.4 2.8 (2.1, 3.6) 2.7 (1.8, 3.5) 2.5 (1.6, 3.4) 2.3 (1.4, 3.2) 2.2 (1.3, 3.1) 2.0 (1.1, 2.9)
  Males
RA area-2 ch [cm2] SD 4.5 25 (16, 33) 24 (15, 33) 23 (14, 32) 22 (14, 31) 21 (13, 30) 21 (12, 29)
RA area/BSA- 2 ch [cm2/m2] SD 2.5 13 (8, 17) 12 (8, 17) 12 (7, 17) 11 (7, 16) 11 (6, 16) 10 (6, 15)
RA transverse diameter- 2 ch [cm] SD 0.6 4.9 (3.7, 6.2) 4.7 (3.5, 6.0) 4.5 (3.3, 5.7) 4.2 (3.0, 5.4) 4.0 (2.8, 5.2) 3.7 (2.5, 4.9)
RA transverse diameter/BSA- 2 ch [cm/m2] SD 0.4 2.5 (1.8, 3.2) 2.4 (1.7, 3.1) 2.3 (1.6, 3.0) 2.1 (1.4, 2.8) 2.0 (1.3, 2.7) 1.9 (1.2, 2.6)
  Females
RA area-2 ch [cm2] SD 3.4 24 (17, 31) 23 (16, 29) 21 (15, 28) 20 (13, 27) 19 (12, 25) 18 (11, 24)
RA area/BSA- 2 ch view [cm2/m2] SD 2 14 (10, 18) 13 (9, 18) 13 (8, 17) 12 (8, 16) 11 (7, 15) 10 (6, 14)
RA transverse diameter-2 ch [cm] SD 0.6 5.1 (4.0, 6.2) 4.8 (3.7, 5.9) 4.5 (3.4, 5.6) 4.2 (3.1, 5.3) 3.9 (2.8, 5.0) 3.6 (2.5, 4.7)
RA transverse diameter/BSA- 2 ch [cm/m2] SD 0.4 3.1 (2.3, 3.9) 2.9 (1.8, 4.0) 2.7 (1.6, 3.8) 2.5 (1.4, 3.6) 2.3 (1.2, 3.4) 2.1 (1.0, 3.2)
  1. LA – left atrium; AP – anteroposterior; 2ch – 2-chamber view; RA – right atrium; BSA – body surface area; SD – standard deviation.