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Table 1 Influence of position related to gestational weeks.

From: Quantitative cardiovascular magnetic resonance in pregnant women: cross-sectional analysis of physiological parameters throughout pregnancy and the impact of the supine position

  Pre pregnancy (N = 5) T20 (N = 6) T32 (N = 8)
  Supine position
Mean (SD)
Left lateral position
Mean (SD)
p-value Supine position
Mean (SD)
Left lateral position
Mean (SD)
p-value Supine position
Mean (SD)
Left lateral position
Mean (SD)
p-value
LEFT ATRIUM AND LEFT VENTRICLE
HR 78.2 (12.7) 73.0 (12.1) 0.180 80.5 (11.3) 72.3 (5.3) 0.104 80.8 (15.7) 75.2 (10.6) 0.237
EF (%) 56.2 (3.5) 55.9 (4.3) 0.686 53.8 (4.4) 57.8 (4.6) 0.046 51.8 (7.2) 57.7 (8.0) 0.012
EDV (ml) 156.5 (23.3) 153.5 (24.7) 0.686 140.8 (37.1) 157.4 (20.7) 0.115 138.4 (22.1) 166.1 (25.6) 0.012
ESV (ml) 68.6 (12.7) 67.8 (14.1) 0.893 64.6 (17.9) 66.5 (11.8) 0.917 67.1 (16.4) 71.4 (22.3) 0.484
SV (ml) 87.8 (12.9) 85.7 (13.4) 0.223 76.0 (21.1) 90.9 (13.4) 0.028 71.2 (12.2) 94.8 (13.1) 0.012
CO (L/min) 6.8 (0.8) 6.2 (1.2) 0.043 6.5 (1.1) 6.5 (1.6) 0.917 5.6 (0.7) 6.9 (0.9) 0.012
LA vol (ml) 65.5 (13.3) 57.1 (15.8) 0.068 51.8 (12.7) 60.8 (10.3) 0.028 49.0 (20.9) 68.6 (15.7) 0.012
LA lat (mm) 39.7 (2.8) 37.8 (3.3) 0.080 35.0 (3.9) 36.7 (3.7) 0.028 35.4 (2.4) 40.7 (3.7) 0.012
LA si (mm) 45.1 (6.7) 43.7 (3.4) 0.500 40.3 (3.9) 44.9 (3.2) 0.027 39.7 (6.3) 44.7 (8.2) 0.025
RIGHT ATRIUM AND RIGHT VENTRICLE
EF (%) 51.5 (5.5) 46.4 (4.0) 0.225 50.5 (3.4) 52.9 (4.7) 0.249 53.2 (6.8) 54.6 (6.6) 0.575
EDV (ml) 161.0 (24.8) 168.6 (29.2) 0.043 132.0 (34.6) 156.1 (22.3) 0.028 138.8 (37.3) 155.9 (22.6) 0.161
ESV (ml) 78.7 (18.8) 90.5 (17.6) 0.080 65.1 (16.5) 73.1 (8.9) 0.463 65.7 (22.6) 71.8 (18.7) 0.484
SV (ml) 82.3 (10.7) 78.1 (14.1) 0.345 66.9 (19.3) 84.1 (16.9) 0.028 73.1 (17.2) 84.1 (7.9) 0.050
CO (L/min) 6.4 (1.0) 5.6 (1.1) 0.138 5.3 (1.5) 5.9 (1.8) 0.075 5.6 (0.6) 6.3 (0.7) 0.025
RA lat (mm) 34.4 (5.0) 33.5 (5.2) 0.345 32.4 (4.0) 33.2 (5.2) 0.500 33.9 (6.2) 36.2 (7.1) 0.484
RA si (mm) 47.5 (2.8) 45.9 (4.4) 0.345 40.4 (4.4) 45.1 (5.6) 0.042 44.5 (6.0) 45.2 (7.8) 0.889
  1. T20: 20th gestational week; T32: 32nd gestational week.
  2. EF (ejection fraction), EDV (end-diastolic volume), ESV (end-systolic volume), SV (stroke volume), CO (cardiac output), LAvol (left atrium volume), LAlat (left atrium lateral diameter), LAsi (left atrium supero-inferior diameter), RAlat (right atrium lateral diameter), RAsi (right atrium supero-inferior diameter)