Related Experiment Video
Updated: Sep 7, 2025
Effect of Hyaluronic Acid 35 kDa on an In Vitro Model of Preterm Small Intestinal Injury and Healing Using Enteroid-Derived Monolayers
Published on: July 28, 2022
Higher Parenteral Electrolyte Intakes in Preterm Infants During First Week of Life: Effects on Electrolyte Imbalances
Cornelia Späth1, Elisabeth Stoltz Sjöström2, Magnus Domellöf1
1From the Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden.
Insights
Higher electrolyte intake via parenteral nutrition (PN) in very low birth weight (VLBW) infants reduced hypokalemia and hypophosphatemia. Adequate potassium in PN is crucial for preventing early hypokalemia in these vulnerable infants.
Area of Science:
- Neonatal Medicine
- Pediatric Nutrition
- Clinical Chemistry
Background:
- Parenteral nutrition (PN) is essential for very low birth weight (VLBW) infants, but electrolyte balance is challenging.
- Optimizing electrolyte delivery in PN is critical for preventing complications in VLBW neonates.
Purpose of the Study:
- To evaluate the impact of increased electrolyte administration through PN on plasma electrolyte levels in VLBW infants.
- To assess the safety and efficacy of a concentrated PN regimen in VLBW infants.
Main Methods:
- A single-center cohort study compared VLBW infants before and after implementing a concentrated PN regimen.
- Daily nutritional intake and plasma electrolyte concentrations (sodium, potassium, phosphate, calcium) were retrospectively collected.
Main Results:
- Concentrated PN led to higher electrolyte intake and a significantly lower incidence of hypokalemia (30% vs. 76%) and severe hypophosphatemia (2.2% vs. 17%).
- Early hypernatremia was not observed with the higher sodium intake in the concentrated PN group.
- Potassium intake below 1 mmol/kg/d in the first 3 days was associated with hypokalemia.
Conclusions:
- A concentrated PN solution with adequate sodium does not induce hypernatremia in VLBW infants.
- Ensuring at least 1 mmol/kg/d of potassium during the first 3 postnatal days is vital for preventing hypokalemia in VLBW infants.
Objectives:
This study aimed to investigate the effects of a higher intake of electrolytes from parenteral nutrition (PN) on plasma electrolyte concentrations in very low birth weight (VLBW, <1500 g) infants.
Methods:
This was a single-center cohort study including all VLBW infants born before (n = 81) and after (n = 53) the implementation of a concentrated PN regimen. Daily nutritional intakes and plasma concentrations of sodium, chloride, potassium, phosphate, and calcium were collected from clinical charts.
Results:
During the first postnatal week, electrolyte intakes were higher in infants who received concentrated PN compared with infants who received original PN. Infants who received concentrated PN had a lower incidence of hypokalemia (<3.5 mmol/L; 30% vs 76%, P < 0.001) and severe hypophosphatemia (<1.0 mmol/L; 2.2% vs 17%, P = 0.02). While the relatively high prevalence of severe hypophosphatemia in infants who received original PN can be explained by a phosphorus intake below the recommendation, the potassium intake during the first 3 postnatal days (mean ± SD: 0.7 ± 0.2 mmol/kg/d) was within the recommendation. The prevalence of early hypernatremia was not affected by the different sodium intake in the 2 groups.
Conclusions:
In VLBW infants, a sodium-containing PN solution (about 2.7 mmol/100 mL) does not cause hypernatremia during the first days of life. Furthermore, providing at least 1 mmol potassium/kg/d during the first 3 postnatal days might be necessary to prevent early hypokalemia.
Related Concept Videos
01:33Introduction to Electrolytes
Role of Sodium
One...
00:42Ionic Bonds
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
01:27Parentral Nutrition: Centeral and Peripheral Parental Nutrition
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
01:20Acute Kidney Injury V: Interprofessional Care
01:19Ionic Strength: Effects on Chemical Equilibria
In this solution, the primary...
01:25Peritoneal Dialysis II: Peritoneal Dialysis Systems and Complications