BACKGROUND:
Knowledge of intrapartum hydration, i.e., women’s oral intake and intravenous(IV) administration is lacking. Recent research indicates that IV fluid therapy during labour is widely used, also on vague indications.

OBJECTIVES:
Therefore, we aimed to describe hydration patterns (oral and intravenous) among low-risk nulliparous women in spontaneous labour, the indications for intravenous fluid administration, and how these patterns relate to labour outcomes.

METHODS:
We used data on hydration patterns from the DRIPP-study, a Danish prospective clinical observational study on low-risk nulliparous women recruited from November 2020 to August 2022 at Copenhagen University hospital-Rigshospitalet. Additional data from patient records were extracted, including e.g., indications for IV fluid and labour outcomes. Descriptive statistics were applied.

RESULTS:
A total of 244 nulliparous low-risk women were included. Among these, 5.3% did not receive any fluids. Oral intake was reported among 91.8% (mean volume: 1206.4 mL [12.5, 4122.5]), and IV fluid in 63.1% (mean: 1358.6 mL [2.7, 3826.0]). The most common indications for IV fluid were augmentation (35.6%), epidural preload (24.7%), and antibiotic therapy (15.3%). Additional analyses are ongoing. This research is still in progress, therefore the results are preliminary.

CONCLUSIONS:
This study provides valuable insight into the hydration patterns during labour among low-risk nulliparous women with spontaneous onset of labour, revealing considerable variation in both the amount and type of oral and IV-administrated fluid. It also highlights significant variability in the clinical indications for IV fluid use.

KEY MESSAGE:
Insufficient IV fluid registration raises concern for patient safety. Further research should focus on both the barriers for accurate documentation and the clinical impact of IV administration. Poster session 1 (Group A)