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Table 2 Clinical data normotensive pregnant women with singleton (n = 44) and twin (n = 22) pregnancies

From: Morphofunctional cardiac changes in singleton and twin pregnancies: a longitudinal cohort study

  2nd trimester 3rd trimester PP1 PP2
Singleton pregnancies (women tested) (n = 42) (n = 42) (n = 41) (n = 41)
Twin pregnancies (women tested) (n = 18) (n = 21) (n = 22) (n = 22)
Clinical data
 Maternal body weight, kg SP 59.9 ± 8.1 63.2 ± 7.9 60.3 ± 8.5 57.7 ± 8.0
TP 56.8 ± 7.7 62.1 ± 8.7 56.8 ± 8.2 52.2 ± 8.0 *
 Weight gain, % SP 10.1 ± 5.3 17.7 ± 7.5 12.1 ± 7.1 6.1 ± 6.1
TP 12.6 ± 6.3 23.9 ± 9.4 *† 13.6 ± 9.1 4.3 ± 0.9 †
 Heart rate, beats/min SP 80 ± 10 83 ± 14 77 ± 11 68 ± 10
TP 77 ± 9 86 ± 14 † 68 ± 10 *† 68 ± 10 †
 Systolic blood pressure, mmHg SP 107 ± 10 111 ± 11 109 ± 12 116 ± 13
TP 98 ± 10 * 108 ± 12 † 109 ± 12 † 108 ± 11 *†
 Diastolic blood pressure, mmHg SP 62 ± 7 67 ± 9 64 ± 10 71 ± 11
TP 58 ± 7 * 62 ± 9 * 64 ± 9 68 ± 7 *†
  1. Data are presented as means ± SD; *, P < 0.05 vs. the value of singleton pregnancy. , P < 0.05 vs. value of the same group determined in the 2nd trimester. SP Singleton pregnancies, TP Twin pregnancies