Table 2 Feed characteristics of infants during a monitored breastfeed (ultrasound imaging and measurement of intra-oral pressure)
From: Characterisation of sucking dynamics of breastfeeding preterm infants: a cross sectional study
|  | Mean ± SD | Median [IQR] | Range |
|---|---|---|---|
Feed duration (min) | 13.8 ± 7.3 | 11.4 (8.3, 18.1) | 2.4–28.6 |
Sucking duration (min) | 5.0 ± 3.6 | 3.3 (2.2, 7.4) | 1.6–11.9 |
Proportion (%) of feed sucking | 38 ± 18 | 34 (24, 49) | 10–86 |
Suck bursts | |||
 Total | 50.7 ± 34.7 | 39 (28, 64) | 6–133 |
 single sucks | 6.2 ± 4.7 | 5 (3, 9.5) | 0–18 |
% single sucks | 13 ± 10 | 11 (6, 17) | 0–38 |
Mean Vacuum (mmHg) | −40.6 ± 27.8 | −33.0 (−46.6, −22.4) | −126.4 - -0.4 |
Milk intake (mL) | 14.4 ± 13.4 | 12 (4, 21) | 0–60 |
Prescribed volumes (mL) | 45 ± 8 | 45 (40,50) | 30–60 |
Sucking efficiency (mL/min)* | 3.7 ± 4.1 | 2.3 (1.2, 4.4) | 0–19.8 |