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Table 2 Characteristics of the first two milk ejections (ME) during pumping with either the 2-phase or infant patterns

From: Comparison of maternal milk ejection characteristics during pumping using infant-derived and 2-phase vacuum patterns

  Overall Left Breast Right Breast Symphony Infant Pattern
Mean (SD) Mean (SD) Mean (SD) Mean (SD) Mean (SD)
Milk Ejection 1
 Time to ME1 (min) 1.5 (1.6) 1.5 (2.0) 1.6 (1.2) 1.5 (1.4) 1.5 (1.8)
 Milk volume (ml) 24.4 (16.1) 28.6 (17.7) 20.2 (13.5) 24.5 (16.1) 24.2 (16.5)
 % Total milk 47.3.(24.1) 53.4 (25.7) 41.1 (21.4) 48.6 (24.1) 45.9 (24.7)
 Peak Flow Rate 0.3 (0.2) 0.4 (0.2) 0.3 (0.2) 0.3 (0.2) 0.3 (0.2)
 Time to peak (min) 1.0 (0.7) 1.0 (0.6) 1.1 (0.9) 1.0 (0.6) 1.1 (0.9)
 Duration (min) 2.3 (0.9) 2.3 (0.9) 2.4 (0.9) 2.3 (0.9) 2.4 (0.9)
Milk Ejection 2
 Milk volume (ml) 21.9 (18.8) 17.7 (9.0) 26.0 (24.4) 21.0 (19.5) 22.9 (18.6)
 % Total milk 39.4 (18.0) 36.3 (21.4) 41.0 (14.1) 38.3 (20.0) 40.7 (16.1)
 Peak Flow Rate 0.3 (0.2) 0.3 (0.2) 0.4 (0.3) 0.3 (0.2) 0.3 (0.2)
 Time to peak (min) 0.6 (0.3) 0.6 (0.4) 0.6 (0.3) 0.6 (0.2) 0.7 (0.4)
 Duration (min) 2.2 (1.2) 2.3 (1.5) 2.1 (0.7) 2.0 (0.7) 2.4 (1.5)
Volume (ml) 53.9 (27.1) 51.9 (20.8) 55.1 (31.6) 53.6 (28.5) 54.2 (26.3)
Number of MEs 2.7 (0.8) 2.6 (1.0) 2.8 (0.7) 2.6 (0.8) 2.8 (0.9)