Table 4: Amount of electrolytes and minerals in mg/L according to the volume of maternal milk collected from preterm mothers at bed side calculated based on the recommended needs.
| Element | Recommended intake (mg/day)* | Mean content (mg/L) | Volume of milk offered (mL) every 3 hours | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 60 | |||
| Calcium | 110 to 130 | 197.4 | 7.8 | 15.7 | 23.6 | 31.5 | 39.4 | 47.3 | 94.7 |
| Iron | 55 to 80 | 97.1 | 3.8 | 7.7 | 11.6 | 15.5 | 19.4 | 23.3 | 46.6 |
| Magnesium | 7.5 to 13.6 | 47.3 | 1.8 | 3.7 | 5.6 | 7.5 | 9.4 | 11.3 | 22.7 |
| Sodium | 63 to 105 | 704 | 28.1 | 56.3 | 84.4 | 112.6 | 140.8 | 168.9 | 337.9 |
| Potassium | 60 to 120 | 515.7 | 20.6 | 41.2 | 61.8 | 82.5 | 103.1 | 123.7 | 247.5 |
*Daily intake recommended by the European Society of Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN). 26 In bold we emphasized the volume required to obtain the recommended intake.